github.com/janelia-flyem/dvid@v1.0.0/datatype/labelmap/mutate_test.go

package labelmap

import (
	"bytes"
	"compress/gzip"
	"encoding/binary"
	"encoding/json"
	"fmt"
	"io"
	"math/rand"
	"net/http"
	"reflect"
	"runtime"
	"strings"
	"sync"
	"testing"
	"time"

	pb "google.golang.org/protobuf/proto"

	"github.com/janelia-flyem/dvid/datastore"
	"github.com/janelia-flyem/dvid/datatype/common/downres"
	"github.com/janelia-flyem/dvid/datatype/common/labels"
	"github.com/janelia-flyem/dvid/datatype/common/proto"
	"github.com/janelia-flyem/dvid/dvid"
	"github.com/janelia-flyem/dvid/server"

	lz4 "github.com/janelia-flyem/go/golz4-updated"
)

func checkSparsevolsCoarse(t *testing.T, encoding []byte) {
	length := len(encoding)
	var i int
	for label := uint64(1); label <= 3; label++ {
		if i+28 >= length {
			t.Fatalf("Expected label %d but only %d bytes remain in encoding\n", label, len(encoding[i:]))
		}
		gotLabel := binary.LittleEndian.Uint64(encoding[i : i+8])
		if gotLabel != label {
			t.Errorf("Expected label %d, got label %d in returned coarse sparsevols\n", label, gotLabel)
		}
		i += 8
		var spans dvid.Spans
		if err := spans.UnmarshalBinary(encoding[i:]); err != nil {
			t.Errorf("Error in decoding coarse sparse volume: %v\n", err)
			return
		}
		i += 4 + len(spans)*16
		b := bodies[label-1]
		if !reflect.DeepEqual(spans, b.blockSpans) {
			_, fn, line, _ := runtime.Caller(1)
			t.Errorf("Expected coarse spans for label %d:\n%s\nGot spans [%s:%d]:\n%s\n", b.label, b.blockSpans, fn, line, spans)
		}
	}
}

func checkNoSparsevol(t *testing.T, uuid dvid.UUID, label uint64) {
	headReq := fmt.Sprintf("%snode/%s/labels/sparsevol/%d", server.WebAPIPath, uuid, label)
	resp := server.TestHTTPResponse(t, "HEAD", headReq, nil)
	if resp.Code != http.StatusNoContent {
		_, fn, line, _ := runtime.Caller(1)
		t.Fatalf("HEAD on %s did not return 204 (No Content).  Status = %d [%s:%d]\n", headReq, resp.Code, fn, line)
	}
}

func checkSparsevolAPIs(t *testing.T, uuid dvid.UUID) {
	for _, label := range []uint64{1, 2, 3, 4} {
		bodies[label-1].checkSparsevolAPIs(t, uuid, label)
	}

	reqStr := fmt.Sprintf("%snode/%s/labels/sparsevols-coarse/1/3", server.WebAPIPath, uuid)
	encoding := server.TestHTTP(t, "GET", reqStr, nil)
	checkSparsevolsCoarse(t, encoding)

	reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol-size/1", server.WebAPIPath, uuid)
	sizeResp := server.TestHTTP(t, "GET", reqStr, nil)
	if string(sizeResp) != `{"voxels": 32000, "numblocks": 3, "minvoxel": [0, 32, 0], "maxvoxel": [31, 63, 95]}` {
		t.Errorf("bad response to sparsevol-size endpoint: %s\n", string(sizeResp))
	}

	// Make sure non-existent bodies return proper HEAD responses.
	headReq := fmt.Sprintf("%snode/%s/labels/sparsevol/%d", server.WebAPIPath, uuid, 10)
	resp := server.TestHTTPResponse(t, "HEAD", headReq, nil)
	if resp.Code != http.StatusNoContent {
		t.Errorf("HEAD on %s did not return 204 (No Content).  Status = %d\n", headReq, resp.Code)
	}
}

func ingestIndex(t *testing.T, uuid dvid.UUID, idx *labels.Index) {
	serialization, err := pb.Marshal(idx)
	if err != nil {
		t.Fatal(err)
	}
	ingestReq := fmt.Sprintf("%snode/%s/labels/index/%d", server.WebAPIPath, uuid, idx.Label)
	server.TestHTTP(t, "POST", ingestReq, bytes.NewBuffer(serialization))
}

type testBody struct {
	label        uint64
	offset, size dvid.Point3d // these are just to give ROI of voxelSpans
	blockSpans   dvid.Spans
	voxelSpans   dvid.Spans // in DVID coordinates, not relative coordinates
}

var emptyBody = testBody{
	label:      0,
	offset:     dvid.Point3d{},
	size:       dvid.Point3d{},
	blockSpans: dvid.Spans{},
	voxelSpans: dvid.Spans{},
}

func (b testBody) add(b2 testBody) (merged testBody) {
	blockSpans := make(dvid.Spans, len(b.blockSpans)+len(b2.blockSpans))
	i := 0
	for _, span := range b.blockSpans {
		blockSpans[i] = span
		i++
	}
	for _, span := range b2.blockSpans {
		blockSpans[i] = span
		i++
	}

	voxelSpans := make(dvid.Spans, len(b.voxelSpans)+len(b2.voxelSpans))
	i = 0
	for _, span := range b.voxelSpans {
		voxelSpans[i] = span
		i++
	}
	for _, span := range b2.voxelSpans {
		voxelSpans[i] = span
		i++
	}
	offset, size := voxelSpans.Extents()
	merged = testBody{
		label:      b.label,
		offset:     offset,
		size:       size,
		blockSpans: blockSpans.Normalize(),
		voxelSpans: voxelSpans.Normalize(),
	}
	return
}

func (b testBody) checkSparsevolAPIs(t *testing.T, uuid dvid.UUID, label uint64) {
	// Check coarse sparsevol
	reqStr := fmt.Sprintf("%snode/%s/labels/sparsevol-coarse/%d", server.WebAPIPath, uuid, label)
	encoding := server.TestHTTP(t, "GET", reqStr, nil)
	b.checkCoarse(t, encoding)

	// Check fast HEAD requests
	reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol/%d", server.WebAPIPath, uuid, label)
	resp := server.TestHTTPResponse(t, "HEAD", reqStr, nil)
	if resp.Code != http.StatusOK {
		t.Errorf("HEAD on %s did not return OK.  Status = %d\n", reqStr, resp.Code)
	}

	// Check full sparse volumes
	encoding = server.TestHTTP(t, "GET", reqStr, nil)
	lenEncoding := len(encoding)
	b.checkSparseVol(t, encoding, dvid.OptionalBounds{})

	// check one downres
	encoding = server.TestHTTP(t, "GET", reqStr+"?scale=1", nil)
	b.checkScaledSparseVol(t, encoding, 1, dvid.OptionalBounds{})

	// check two downres
	encoding = server.TestHTTP(t, "GET", reqStr+"?scale=2", nil)
	b.checkScaledSparseVol(t, encoding, 2, dvid.OptionalBounds{})

	// Check with lz4 compression
	uncompressed := make([]byte, lenEncoding)
	compressed := server.TestHTTP(t, "GET", reqStr+"?compression=lz4", nil)
	if err := lz4.Uncompress(compressed, uncompressed); err != nil {
		t.Fatalf("error uncompressing lz4 for sparsevol %d GET: %v\n", label, err)
	}
	b.checkSparseVol(t, uncompressed, dvid.OptionalBounds{})

	// Check with gzip compression
	compressed = server.TestHTTP(t, "GET", reqStr+"?compression=gzip", nil)
	buf := bytes.NewBuffer(compressed)
	var err error
	r, err := gzip.NewReader(buf)
	if err != nil {
		t.Fatalf("error creating gzip reader: %v\n", err)
	}
	var buffer bytes.Buffer
	_, err = io.Copy(&buffer, r)
	if err != nil {
		t.Fatalf("error copying gzip data: %v\n", err)
	}
	err = r.Close()
	if err != nil {
		t.Fatalf("error closing gzip: %v\n", err)
	}
	encoding = buffer.Bytes()
	b.checkSparseVol(t, encoding, dvid.OptionalBounds{})

	// Check Y/Z restriction
	miny := int32(30)
	maxy := int32(50)
	minz := int32(20)
	maxz := int32(40)
	for scale := uint8(0); scale < 3; scale++ {
		reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol/%d?scale=%d&miny=%d&maxy=%d&minz=%d&maxz=%d",
			server.WebAPIPath, uuid, label, scale, miny, maxy, minz, maxz)
		if label != 4 {
			encoding = server.TestHTTP(t, "GET", reqStr, nil)
			var bound dvid.OptionalBounds
			bound.SetMinY(miny)
			bound.SetMaxY(maxy)
			bound.SetMinZ(minz)
			bound.SetMaxZ(maxz)
			b.checkScaledSparseVol(t, encoding, scale, bound)
		} else {
			encoding = server.TestHTTP(t, "GET", reqStr, nil) // Should be 200 with no bytes
			if len(encoding) != 0 {
				t.Fatalf("expected 0 bytes, got %d for %s\n", len(encoding), reqStr)
			}
		}
		miny >>= 1
		maxy >>= 1
		minz >>= 1
		maxz >>= 1
	}

	// Check X restriction
	minx := int32(20)
	maxx := int32(47)
	reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol/%d?minx=%d&maxx=%d", server.WebAPIPath, uuid, label, minx, maxx)
	if label != 4 {
		encoding = server.TestHTTP(t, "GET", reqStr, nil)
		checkSpans(t, encoding, minx, maxx)
	} else {
		server.TestBadHTTP(t, "GET", reqStr, nil) // Should be not found
	}
}

func (b testBody) getIndex(t *testing.T) *labels.Index {
	idx := new(labels.Index)
	idx.Label = b.label
	idx.Blocks = make(map[uint64]*proto.SVCount)
	voxelCounts := b.voxelSpans.VoxelCounts(dvid.Point3d{32, 32, 32})
	for izyxStr, count := range voxelCounts {
		zyx, err := labels.IZYXStringToBlockIndex(izyxStr)
		if err != nil {
			t.Fatal(err)
		}
		svc := new(proto.SVCount)
		svc.Counts = map[uint64]uint32{b.label: count}
		idx.Blocks[zyx] = svc
	}
	return idx
}

func (b testBody) postIndex(t *testing.T, uuid dvid.UUID) {
	idx := b.getIndex(t)
	serialization, err := pb.Marshal(idx)
	if err != nil {
		t.Fatal(err)
	}
	indexReq := fmt.Sprintf("%snode/%s/labels/index/%d", server.WebAPIPath, uuid, b.label)
	server.TestHTTP(t, "POST", indexReq, bytes.NewBuffer(serialization))
}

// Makes sure the coarse sparse volume encoding matches the body.
func (b testBody) checkCoarse(t *testing.T, encoding []byte) {
	// Get to the  # spans and RLE in encoding
	spansEncoding := encoding[8:]
	var spans dvid.Spans
	if err := spans.UnmarshalBinary(spansEncoding); err != nil {
		t.Errorf("Error in decoding coarse sparse volume: %v\n", err)
		return
	}

	// Check those spans match the body voxels.
	if !reflect.DeepEqual(spans, b.blockSpans) {
		_, fn, line, _ := runtime.Caller(1)
		t.Errorf("Expected coarse spans for label %d:\n%s\nGot spans [%s:%d]:\n%s\n", b.label, b.blockSpans, fn, line, spans)
	}
}

// Makes sure the sparse volume encoding matches the actual body voxels.
func (b testBody) checkSparseVol(t *testing.T, encoding []byte, bounds dvid.OptionalBounds) {
	if len(encoding) < 12 {
		t.Fatalf("Bad encoded sparsevol received.  Only %d bytes\n", len(encoding))
	}

	// Get to the  # spans and RLE in encoding
	spansEncoding := encoding[8:]
	var spans dvid.Spans
	if err := spans.UnmarshalBinary(spansEncoding); err != nil {
		t.Fatalf("Error in decoding sparse volume: %v\n", err)
	}

	// Create potentially bounded spans
	expected := dvid.Spans{}
	if bounds.IsSet() {
		for _, span := range b.voxelSpans {
			if bounds.OutsideY(span[1]) || bounds.OutsideZ(span[0]) {
				continue
			}
			expected = append(expected, span)
		}
	} else {
		expected = b.voxelSpans
	}

	// Check those spans match the body voxels.
	gotNorm := spans.Normalize()
	expectNorm := expected.Normalize()
	if !reflect.DeepEqual(gotNorm, expectNorm) {
		for _, got := range gotNorm {
			bad := true
			for _, expect := range expectNorm {
				if reflect.DeepEqual(got, expect) {
					bad = false
				}
			}
			if bad {
				fmt.Printf("Got unexpected span: %s\n", got)
			}
		}
		for _, expect := range expectNorm {
			bad := true
			for _, got := range gotNorm {
				if reflect.DeepEqual(got, expect) {
					bad = false
				}
			}
			if bad {
				fmt.Printf("Never got expected span: %s\n", expect)
			}
		}
		_, fn, line, _ := runtime.Caller(1)
		t.Fatalf("Expected %d fine spans for label %d [%s:%d]:\n%s\nGot %d spans:\n%s\nAfter Norm:%s\n", len(expectNorm), b.label, fn, line, expectNorm, len(spans), spans, gotNorm)
	}
}

// Makes sure the sparse volume encoding matches a downres of actual body voxels.
func (b testBody) checkScaledSparseVol(t *testing.T, encoding []byte, scale uint8, bounds dvid.OptionalBounds) {
	if scale == 0 {
		b.checkSparseVol(t, encoding, bounds)
		return
	}
	// Make down-res volume of body
	vol := newTestVolume(128, 128, 128)
	vol.addBody(b, 1)
	vol.downres(scale)

	if len(encoding) < 12 {
		if vol.containsLabel(1) {
			t.Fatalf("Bad encoded sparsevol received at scale %d.  Only %d bytes when label 1 found\n", scale, len(encoding))
		}
		return
	}

	// Get to the  # spans and RLE in encoding
	spansEncoding := encoding[8:]
	var spans dvid.Spans
	if err := spans.UnmarshalBinary(spansEncoding); err != nil {
		t.Fatalf("Error in decoding sparse volume: %v\n", err)
	}

	// Check those spans are within the body voxels.
	for _, span := range spans {
		z, y, x0, x1 := span.Unpack()
		if x1 >= vol.size[0] || y >= vol.size[1] || z >= vol.size[2] {
			t.Fatalf("Span %s is outside bound of scale %d volume of size %s\n", span, scale, vol.size)
		}
		pos := z*vol.size[0]*vol.size[1] + y*vol.size[0] + x0
		for x := x0; x <= x1; x++ {
			label := binary.LittleEndian.Uint64(vol.data[pos*8 : pos*8+8])
			if label != 1 {
				t.Fatalf("Received body at scale %d has voxel at (%d,%d,%d) but that voxel is label %d, not in body %d\n", scale, x, y, z, label, b.label)
				return
			}
			pos++
		}
	}
}

// checks use of binary blocks format
func (b testBody) checkBinarySparseVol(t *testing.T, r io.Reader) {
	binBlocks, err := labels.ReceiveBinaryBlocks(r)
	if err != nil {
		_, fn, line, _ := runtime.Caller(1)
		t.Fatalf("Error trying to decode binary blocks for body %d [%s:%d]: %v\n", b.label, fn, line, err)
	}

	expected := newTestVolume(128, 128, 128)
	expected.addBody(b, 1)

	got := newTestVolume(128, 128, 128)
	got.addBlocks(t, binBlocks, 1)

	if err := expected.equals(got); err != nil {
		_, fn, line, _ := runtime.Caller(1)
		t.Fatalf("error getting binary blocks for body %d [%s:%d]: %v\n", b.label, fn, line, err)
	}
}

// checks use of binary blocks format + scaling
func (b testBody) checkScaledBinarySparseVol(t *testing.T, r io.Reader, scale uint8) {
	binBlocks, err := labels.ReceiveBinaryBlocks(r)
	if err != nil {
		t.Fatalf("Error trying to decode binary blocks for body %d: %v\n", b.label, err)
	}

	expected := newTestVolume(128, 128, 128)
	expected.addBody(b, 1)
	expected.downres(scale)

	n := int32(128 >> scale)
	got := newTestVolume(n, n, n)
	got.addBlocks(t, binBlocks, 1)

	if err := expected.equals(got); err != nil {
		_, fn, line, _ := runtime.Caller(1)
		t.Fatalf("error getting binary blocks for body %d, scale %d [%s:%d]: %v\n", b.label, scale, fn, line, err)
	}
}

// Sees if the given block span has any of this test body label in it.
func (b testBody) isDeleted(t *testing.T, encoding []byte, bspan dvid.Span) bool {
	// Get to the  # spans and RLE in encoding
	spansEncoding := encoding[8:]
	var spans dvid.Spans
	if err := spans.UnmarshalBinary(spansEncoding); err != nil {
		t.Fatalf("Error in decoding sparse volume: %v\n", err)
		return false
	}

	// Iterate true spans to see if any are in the blocks given.
	for _, span := range spans {
		bx0 := span[2] / 32
		bx1 := span[3] / 32
		by := span[1] / 32
		bz := span[0] / 32

		withinX := (bx0 >= bspan[2] && bx0 <= bspan[3]) || (bx1 >= bspan[2] && bx1 <= bspan[3])
		if bz == bspan[0] && by == bspan[1] && withinX {
			return false
		}
	}
	return true
}

func checkSpans(t *testing.T, encoding []byte, minx, maxx int32) {
	// Get to the  # spans and RLE in encoding
	spansEncoding := encoding[8:]
	var spans dvid.Spans
	if err := spans.UnmarshalBinary(spansEncoding); err != nil {
		t.Errorf("Error in decoding coarse sparse volume: %v\n", err)
		return
	}
	for _, span := range spans {
		if span[2] < minx {
			t.Errorf("Found span violating min x %d: %s\n", minx, span)
			return
		}
		if span[3] > maxx {
			t.Errorf("Found span violating max x %d: %s\n", maxx, span)
		}
	}
}

// Sets voxels in body to given label.
func (v *testVolume) addBody(body testBody, label uint64) {
	nx := v.size[0]
	nxy := nx * v.size[1]
	for _, span := range body.voxelSpans {
		z, y, x0, x1 := span.Unpack()
		p := (z*nxy + y*nx) * 8
		for i := p + x0*8; i <= p+x1*8; i += 8 {
			binary.LittleEndian.PutUint64(v.data[i:i+8], label)
		}
	}
}

// Returns true if all voxels in test volume for given body has label.
func (v *testVolume) isLabel(label uint64, body *testBody) bool {
	nx := v.size[0]
	nxy := nx * v.size[1]
	for _, span := range body.voxelSpans {
		z, y, x0, x1 := span.Unpack()
		p := (z*nxy + y*nx) * 8
		for i := p + x0*8; i <= p+x1*8; i += 8 {
			curLabel := binary.LittleEndian.Uint64(v.data[i : i+8])
			if curLabel != label {
				return false
			}
		}
	}
	return true
}

// Returns true if any voxel in test volume has given label.
func (v *testVolume) hasLabel(label uint64, body *testBody) bool {
	nx := v.size[0]
	nxy := nx * v.size[1]
	for _, span := range body.voxelSpans {
		z, y, x0, x1 := span.Unpack()
		p := (z*nxy + y*nx) * 8
		for i := p + x0*8; i <= p+x1*8; i += 8 {
			curLabel := binary.LittleEndian.Uint64(v.data[i : i+8])
			if curLabel == label {
				return true
			}
		}
	}
	return false
}

func createLabelTestVolume(t *testing.T, uuid dvid.UUID, name string) *testVolume {
	// Setup test label blocks that are non-intersecting.
	volume := newTestVolume(128, 128, 128)
	volume.addBody(body1, 1)
	volume.addBody(body2, 2)
	volume.addBody(body3, 3)
	volume.addBody(body4, 4)

	// Send data over HTTP to populate a data instance
	volume.put(t, uuid, name)
	return volume
}

func createLabelTest2Volume(t *testing.T, uuid dvid.UUID, name string) *testVolume {
	// Setup test label blocks that are non-intersecting.
	volume := newTestVolume(128, 128, 128)
	volume.addBody(body6, 6)
	volume.addBody(body7, 7)

	// Send data over HTTP to populate a data instance using mutable flag
	volume.putMutable(t, uuid, name)
	return volume
}

func TestSparseVolumes(t *testing.T) {
	if err := server.OpenTest(); err != nil {
		t.Fatalf("can't open test server: %v\n", err)
	}
	defer server.CloseTest()

	// Create testbed volume and data instances
	uuid, _ := initTestRepo()
	var config dvid.Config
	config.Set("MaxDownresLevel", "2")
	config.Set("BlockSize", "32,32,32") // Previous test data was on 32^3 blocks
	server.CreateTestInstance(t, uuid, "labelmap", "labels", config)
	labelVol := createLabelTestVolume(t, uuid, "labels")

	gotVol := newTestVolume(128, 128, 128)
	gotVol.get(t, uuid, "labels", false)
	if err := gotVol.equals(labelVol); err != nil {
		t.Fatalf("Couldn't get back simple 128x128x128 label volume that was written: %v\n", err)
	}

	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on labels updating: %v\n", err)
	}
	if err := downres.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on update for labels: %v\n", err)
	}
	time.Sleep(1 * time.Second)

	dataservice, err := datastore.GetDataByUUIDName(uuid, "labels")
	if err != nil {
		t.Fatalf("couldn't get labels data instance from datastore: %v\n", err)
	}
	labels, ok := dataservice.(*Data)
	if !ok {
		t.Fatalf("Returned data instance for 'labels' instance was not labelmap.Data!\n")
	}
	if labels.MaxRepoLabel != 4 {
		t.Errorf("Expected max repo label to be 4, got %d\n", labels.MaxRepoLabel)
	}
	v, err := datastore.VersionFromUUID(uuid)
	if err != nil {
		t.Errorf("couldn't get version id from uuid %s: %v\n", uuid, err)
	}
	if len(labels.MaxLabel) != 1 || labels.MaxLabel[v] != 4 {
		t.Errorf("bad MaxLabels: %v\n", labels.MaxLabel)
	}
	maxLabelResp := server.TestHTTP(t, "GET", fmt.Sprintf("%snode/%s/labels/maxlabel", server.WebAPIPath, uuid), nil)
	if string(maxLabelResp) != `{"maxlabel": 4}` {
		t.Errorf("bad response to maxlabel endpoint: %s\n", string(maxLabelResp))
	}

	server.TestHTTP(t, "POST", fmt.Sprintf("%snode/%s/labels/maxlabel/8", server.WebAPIPath, uuid), nil)
	maxLabelResp = server.TestHTTP(t, "GET", fmt.Sprintf("%snode/%s/labels/maxlabel", server.WebAPIPath, uuid), nil)
	if string(maxLabelResp) != `{"maxlabel": 8}` {
		t.Errorf("bad response to maxlabel endpoint: %s\n", string(maxLabelResp))
	}

	nextLabelResp := server.TestHTTP(t, "GET", fmt.Sprintf("%snode/%s/labels/nextlabel", server.WebAPIPath, uuid), nil)
	if string(nextLabelResp) != `{"nextlabel": 9}` {
		t.Errorf("bad response to nextlabel endpoint: %s\n", string(nextLabelResp))
	}
	nextLabelResp = server.TestHTTP(t, "POST", fmt.Sprintf("%snode/%s/labels/nextlabel/5", server.WebAPIPath, uuid), nil)
	if string(nextLabelResp) != `{"start": 9, "end": 13}` {
		t.Errorf("bad response to POST /nextlabel: %s\n", string(maxLabelResp))
	}
	maxLabelResp = server.TestHTTP(t, "GET", fmt.Sprintf("%snode/%s/labels/maxlabel", server.WebAPIPath, uuid), nil)
	if string(maxLabelResp) != `{"maxlabel": 13}` {
		t.Errorf("bad response to maxlabel endpoint: %s\n", string(maxLabelResp))
	}
	nextLabelResp = server.TestHTTP(t, "GET", fmt.Sprintf("%snode/%s/labels/nextlabel", server.WebAPIPath, uuid), nil)
	if string(nextLabelResp) != `{"nextlabel": 14}` {
		t.Errorf("bad response to nextlabel endpoint: %s\n", string(nextLabelResp))
	}

	badReqStr := fmt.Sprintf("%snode/%s/labels/sparsevol/0", server.WebAPIPath, uuid)
	server.TestBadHTTP(t, "GET", badReqStr, nil)

	checkSparsevolAPIs(t, uuid)
}

func Test16x16x16SparseVolumes(t *testing.T) {
	if err := server.OpenTest(); err != nil {
		t.Fatalf("can't open test server: %v\n", err)
	}
	defer server.CloseTest()

	// Create testbed volume and data instances
	uuid, _ := initTestRepo()
	var config dvid.Config
	config.Set("BlockSize", "16,16,16") // Since RLE encoding spans blocks now, should work for smaller block size.
	server.CreateTestInstance(t, uuid, "labelmap", "labels", config)
	labelVol := createLabelTestVolume(t, uuid, "labels")

	gotVol := newTestVolume(128, 128, 128)
	gotVol.get(t, uuid, "labels", false)
	if err := gotVol.equals(labelVol); err != nil {
		t.Fatalf("Couldn't get back simple 128x128x128 label volume that was written: %v\n", err)
	}

	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on labels updating: %v\n", err)
	}
	time.Sleep(1 * time.Second)

	for _, label := range []uint64{1, 2, 3, 4} {
		// Check fast HEAD requests
		reqStr := fmt.Sprintf("%snode/%s/labels/sparsevol/%d", server.WebAPIPath, uuid, label)
		resp := server.TestHTTPResponse(t, "HEAD", reqStr, nil)
		if resp.Code != http.StatusOK {
			t.Errorf("HEAD on %s did not return OK.  Status = %d\n", reqStr, resp.Code)
		}

		// Check full sparse volumes
		encoding := server.TestHTTP(t, "GET", reqStr, nil)
		fmt.Printf("Got %d bytes back from %s\n", len(encoding), reqStr)
		bodies[label-1].checkSparseVol(t, encoding, dvid.OptionalBounds{})

		// Check with lz4 compression
		compressed := server.TestHTTP(t, "GET", reqStr+"?compression=lz4", nil)
		if err := lz4.Uncompress(compressed, encoding); err != nil {
			t.Fatalf("error uncompressing lz4: %v\n", err)
		}
		bodies[label-1].checkSparseVol(t, encoding, dvid.OptionalBounds{})

		// Check with gzip compression
		compressed = server.TestHTTP(t, "GET", reqStr+"?compression=gzip", nil)
		b := bytes.NewBuffer(compressed)
		var err error
		r, err := gzip.NewReader(b)
		if err != nil {
			t.Fatalf("error creating gzip reader: %v\n", err)
		}
		var buffer bytes.Buffer
		_, err = io.Copy(&buffer, r)
		if err != nil {
			t.Fatalf("error copying gzip data: %v\n", err)
		}
		err = r.Close()
		if err != nil {
			t.Fatalf("error closing gzip: %v\n", err)
		}
		encoding = buffer.Bytes()
		bodies[label-1].checkSparseVol(t, encoding, dvid.OptionalBounds{})

		// Check Y/Z restriction
		reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol/%d?miny=30&maxy=50&minz=20&maxz=40", server.WebAPIPath, uuid, label)
		if label != 4 {
			encoding = server.TestHTTP(t, "GET", reqStr, nil)
			var bound dvid.OptionalBounds
			bound.SetMinY(30)
			bound.SetMaxY(50)
			bound.SetMinZ(20)
			bound.SetMaxZ(40)
			bodies[label-1].checkSparseVol(t, encoding, bound)
		} else {
			server.TestBadHTTP(t, "GET", reqStr, nil) // Should be not found
		}

		// Check X restriction
		minx := int32(20)
		maxx := int32(47)
		reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol/%d?minx=%d&maxx=%d", server.WebAPIPath, uuid, label, minx, maxx)
		if label != 4 {
			encoding = server.TestHTTP(t, "GET", reqStr, nil)
			checkSpans(t, encoding, minx, maxx)
		} else {
			server.TestBadHTTP(t, "GET", reqStr, nil) // Should be not found
		}
	}

	// Make sure non-existent bodies return proper HEAD responses.
	headReq := fmt.Sprintf("%snode/%s/labels/sparsevol/%d", server.WebAPIPath, uuid, 10)
	resp := server.TestHTTPResponse(t, "HEAD", headReq, nil)
	if resp.Code != http.StatusNoContent {
		t.Errorf("HEAD on %s did not return 204 (No Content).  Status = %d\n", headReq, resp.Code)
	}
}

// func TestMergeLog(t *testing.T) {
// 	if err := server.OpenTest(); err != nil {
// 		t.Fatalf("can't open test server: %v\n", err)
// 	}
// 	defer server.CloseTest()

// 	// Create testbed volume and data instances
// 	uuid, _ := initTestRepo()
// 	var config dvid.Config
// 	server.CreateTestInstance(t, uuid, "labelmap", "labels", config)

// 	data, err := GetByUUIDName(uuid, "labels")
// 	if err != nil {
// 		t.Fatalf("can't get labels instance of labelmap: %v\n", err)
// 	}
// }

func TestMergeLabels(t *testing.T) {
	if err := server.OpenTest(); err != nil {
		t.Fatalf("can't open test server: %v\n", err)
	}
	defer server.CloseTest()

	// Create testbed volume and data instances
	uuid, _ := initTestRepo()
	var config dvid.Config
	server.CreateTestInstance(t, uuid, "labelmap", "labels", config)

	expected := createLabelTestVolume(t, uuid, "labels")
	expected.addBody(body3, 2)

	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on sync of labels: %v\n", err)
	}

	// Make sure max label is consistent
	reqStr := fmt.Sprintf("%snode/%s/labels/maxlabel", server.WebAPIPath, uuid)
	r := server.TestHTTP(t, "GET", reqStr, nil)
	jsonVal := make(map[string]uint64)
	if err := json.Unmarshal(r, &jsonVal); err != nil {
		t.Errorf("Unable to get maxlabel from server.  Instead got: %v\n", jsonVal)
	}
	maxlabel, ok := jsonVal["maxlabel"]
	if !ok {
		t.Errorf("The maxlabel query did not yield max label.  Instead got: %v\n", jsonVal)
	}
	if maxlabel != 4 {
		t.Errorf("Expected max label to be 4, instead got %d\n", maxlabel)
	}

	// Check /supervoxels
	reqStr = fmt.Sprintf("%snode/%s/labels/supervoxels/2", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "GET", reqStr, nil)
	var supervoxels []uint64
	if err := json.Unmarshal(r, &supervoxels); err != nil {
		t.Errorf("Unable to parse supervoxels from server.  Got: %v\n", supervoxels)
	}
	if len(supervoxels) != 1 || supervoxels[0] != 2 {
		t.Errorf("expected [2] for supervoxels in body 2, got %v\n", supervoxels)
	}

	// Check /supervoxel-sizes
	reqStr = fmt.Sprintf("%snode/%s/labels/supervoxel-sizes/2", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "GET", reqStr, nil)
	svsizes := struct {
		Supervoxels []uint64
		Sizes       []uint64
	}{}
	if err := json.Unmarshal(r, &svsizes); err != nil {
		t.Errorf("Unable to parse supervoxel-sizes from server.  Got: %s\n", string(r))
	}
	if len(svsizes.Supervoxels) != 1 || svsizes.Supervoxels[0] != 2 {
		t.Errorf("expected [2] for supervoxels in body 2, got %v\n", svsizes.Supervoxels)
	}
	if len(svsizes.Sizes) != 1 || svsizes.Sizes[0] != 50000 {
		t.Errorf("expected [2] for supervoxel sizes in body 2, got %v\n", svsizes.Sizes)
	}

	// Make sure /label and /labels endpoints work.
	apiStr := fmt.Sprintf("%snode/%s/%s/label/94_58_89", server.WebAPIPath, uuid, "labels")
	jsonResp := server.TestHTTP(t, "GET", apiStr, nil)
	var jsonVal2 struct {
		Label uint64
	}
	if err := json.Unmarshal(jsonResp, &jsonVal2); err != nil {
		t.Errorf("Unable to parse 'label' endpoint response: %s\n", jsonResp)
	}
	if jsonVal2.Label != 4 {
		t.Errorf("Expected label 4, got label %d\n", jsonVal2.Label)
	}
	apiStr = fmt.Sprintf("%snode/%s/%s/labels", server.WebAPIPath, uuid, "labels")
	payload := `[[20,46,39],[30,25,50],[48,56,39],[80,55,60]]`
	jsonResp = server.TestHTTP(t, "GET", apiStr, bytes.NewBufferString(payload))
	var labels [4]uint64
	if err := json.Unmarshal(jsonResp, &labels); err != nil {
		t.Fatalf("Unable to parse 'labels' endpoint response: %s\n", jsonResp)
	}
	if labels[0] != 1 {
		t.Errorf("Expected label 1, got label %d\n", labels[0])
	}
	if labels[1] != 2 {
		t.Errorf("Expected label 2, got label %d\n", labels[1])
	}
	if labels[2] != 3 {
		t.Errorf("Expected label 3, got label %d\n", labels[2])
	}
	if labels[3] != 4 {
		t.Errorf("Expected label 4, got label %d\n", labels[3])
	}

	// Test merge of 3 into 2
	testMerge := mergeJSON(`[2, 3]`)
	testMerge.send(t, uuid, "labels")

	// Make sure label 3 sparsevol has been removed.
	reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol/%d", server.WebAPIPath, uuid, 3)
	server.TestBadHTTP(t, "GET", reqStr, nil)

	// Check /supervoxels
	reqStr = fmt.Sprintf("%snode/%s/labels/supervoxels/2", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "GET", reqStr, nil)
	if err := json.Unmarshal(r, &supervoxels); err != nil {
		t.Errorf("Unable to parse supervoxels from server.  Got: %v\n", supervoxels)
	}
	if len(supervoxels) != 2 {
		t.Errorf("expected [2,3] for supervoxels in body 2, got %v\n", supervoxels)
	}
	sv := make(map[uint64]struct{}, 2)
	for _, supervoxel := range supervoxels {
		sv[supervoxel] = struct{}{}
	}
	if _, found := sv[2]; !found {
		t.Errorf("expected supervoxel 2 within body 2 but didn't find it\n")
	}
	if _, found := sv[3]; !found {
		t.Errorf("expected supervoxel 3 within body 3 but didn't find it\n")
	}

	reqStr = fmt.Sprintf("%snode/%s/labels/supervoxel-sizes/2", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "GET", reqStr, nil)
	if err := json.Unmarshal(r, &svsizes); err != nil {
		t.Errorf("Unable to parse supervoxel-sizes from server.  Got: %s\n", string(r))
	}
	expectedSizes := map[uint64]uint64{
		2: 50000,
		3: 12000,
	}
	if len(svsizes.Supervoxels) != 2 {
		t.Fatalf("expected 2 sv return from supervoxel-sizes, got %d\n", len(svsizes.Supervoxels))
	}
	if len(svsizes.Sizes) != 2 {
		t.Fatalf("expected 2 sv size return from supervoxel-sizes, got %d\n", len(svsizes.Sizes))
	}
	for i := 0; i < 2; i++ {
		svlabel := svsizes.Supervoxels[i]
		expectedSize, found := expectedSizes[svlabel]
		if !found {
			t.Fatalf("bad /supervoxel-sizes return. Got unexpected supervoxel %d\n", svlabel)
		}
		if expectedSize != svsizes.Sizes[i] {
			t.Fatalf("bad /supervoxel-sizes return. Got unexpected size %d for supervoxel %d, expected %d\n",
				svsizes.Sizes[i], svlabel, expectedSize)
		}
	}

	// Make sure the index metadata is correct
	indexURL := fmt.Sprintf("%snode/%s/labels/index/2?metadata-only=true", server.WebAPIPath, uuid)
	respData := server.TestHTTP(t, "GET", indexURL, nil)
	respJSON := struct {
		NumVoxels   uint64 `json:"num_voxels"`
		LastMutID   uint64 `json:"last_mutid"`
		LastModTime string `json:"last_mod_time"`
		LastModUser string `json:"last_mod_user"`
		LastModApp  string `json:"last_mod_app"`
	}{}
	if err := json.Unmarshal(respData, &respJSON); err != nil {
		t.Errorf("Expected JSON response.  Got %s\n", string(respData))
	}
	if respJSON.NumVoxels != 62000 {
		t.Errorf("Expected num voxels %d, got %d\n", 50000, respJSON.NumVoxels)
	}
	if respJSON.LastModUser != "tester" {
		t.Errorf("Expected LastModUser 'tester', got %v\n", respJSON)
	}

	// Make sure label changes are correct after completion
	apiStr = fmt.Sprintf("%snode/%s/%s/labels", server.WebAPIPath, uuid, "labels")
	jsonResp = server.TestHTTP(t, "GET", apiStr, bytes.NewBufferString(payload))
	if err := json.Unmarshal(jsonResp, &labels); err != nil {
		t.Fatalf("Unable to parse 'labels' endpoint response: %s\n", jsonResp)
	}
	if labels[0] != 1 {
		t.Errorf("Expected label 1, got label %d\n", labels[0])
	}
	if labels[1] != 2 {
		t.Errorf("Expected label 2, got label %d\n", labels[1])
	}
	if labels[2] != 2 {
		t.Errorf("Expected label 2, got label %d\n", labels[2])
	}
	if labels[3] != 4 {
		t.Errorf("Expected label 4, got label %d\n", labels[3])
	}

	apiStr = fmt.Sprintf("%snode/%s/%s/label/59_56_20", server.WebAPIPath, uuid, "labels")
	jsonResp = server.TestHTTP(t, "GET", apiStr, nil)
	if err := json.Unmarshal(jsonResp, &jsonVal2); err != nil {
		t.Errorf("Unable to parse 'label' endpoint response: %s\n", jsonResp)
	}
	if jsonVal2.Label != 2 {
		t.Errorf("Expected label 2, got label %d\n", jsonVal2.Label)
	}

	retrieved := newTestVolume(128, 128, 128)
	retrieved.get(t, uuid, "labels", false)
	if len(retrieved.data) != 8*128*128*128 {
		t.Errorf("Retrieved labelvol volume is incorrect size\n")
	}
	if !retrieved.isLabel(2, &body2) {
		t.Errorf("Expected label 2 original voxels to remain.  Instead some were removed.\n")
	}
	if retrieved.hasLabel(3, &body3) {
		t.Errorf("Found label 3 when all label 3 should have been merged into label 2!\n")
	}
	if !retrieved.isLabel(2, &body3) {
		t.Errorf("Incomplete merging.  Label 2 should have taken over full extent of label 3\n")
	}
	if err := retrieved.equals(expected); err != nil {
		t.Errorf("Merged label volume: %v\n", err)
	}
}

func TestSplitLabel(t *testing.T) {
	if err := server.OpenTest(); err != nil {
		t.Fatalf("can't open test server: %v\n", err)
	}
	defer server.CloseTest()

	// Create testbed volume and data instances
	uuid, _ := initTestRepo()
	var config dvid.Config
	config.Set("MaxDownresLevel", "2")
	config.Set("BlockSize", "32,32,32") // Previous test data was on 32^3 blocks
	server.CreateTestInstance(t, uuid, "labelmap", "labels", config)

	// Post label volume and setup expected volume after split.
	expected := createLabelTestVolume(t, uuid, "labels")
	expected.addBody(bodysplit, 5)

	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on sync of labels: %v\n", err)
	}

	// Make sure sparsevol for original body 4 is correct
	reqStr := fmt.Sprintf("%snode/%s/labels/sparsevol/%d", server.WebAPIPath, uuid, 4)
	encoding := server.TestHTTP(t, "GET", reqStr, nil)
	fmt.Printf("Checking original body 4 is correct\n")
	body4.checkSparseVol(t, encoding, dvid.OptionalBounds{})

	// Create the sparsevol encoding for split area
	numspans := len(bodysplit.voxelSpans)
	rles := make(dvid.RLEs, numspans, numspans)
	for i, span := range bodysplit.voxelSpans {
		start := dvid.Point3d{span[2], span[1], span[0]}
		length := span[3] - span[2] + 1
		rles[i] = dvid.NewRLE(start, length)
	}

	// Create the split sparse volume binary
	buf := new(bytes.Buffer)
	buf.WriteByte(dvid.EncodingBinary)
	binary.Write(buf, binary.LittleEndian, uint8(3))         // # of dimensions
	binary.Write(buf, binary.LittleEndian, byte(0))          // dimension of run (X = 0)
	buf.WriteByte(byte(0))                                   // reserved for later
	binary.Write(buf, binary.LittleEndian, uint32(0))        // Placeholder for # voxels
	binary.Write(buf, binary.LittleEndian, uint32(numspans)) // Placeholder for # spans
	rleBytes, err := rles.MarshalBinary()
	if err != nil {
		t.Errorf("Unable to serialize RLEs: %v\n", err)
	}
	buf.Write(rleBytes)

	// Verify the max label is 4
	reqStr = fmt.Sprintf("%snode/%s/labels/maxlabel", server.WebAPIPath, uuid)
	jsonStr := server.TestHTTP(t, "GET", reqStr, nil)
	expectedJSON := `{"maxlabel": 4}`
	if string(jsonStr) != expectedJSON {
		t.Errorf("Expected this JSON returned from maxlabel:\n%s\nGot:\n%s\n", expectedJSON, string(jsonStr))
	}

	// Submit the split sparsevol for body 4 using RLES "bodysplit"
	reqStr = fmt.Sprintf("%snode/%s/labels/split/%d", server.WebAPIPath, uuid, 4)
	r := server.TestHTTP(t, "POST", reqStr, buf)
	jsonVal := make(map[string]uint64)
	if err := json.Unmarshal(r, &jsonVal); err != nil {
		t.Errorf("Unable to get new label from split.  Instead got: %v\n", jsonVal)
	}
	newlabel, ok := jsonVal["label"]
	if !ok {
		t.Errorf("The split request did not yield label value.  Instead got: %v\n", jsonVal)
	}
	if newlabel != 5 {
		t.Errorf("Expected split label to be 5, instead got %d\n", newlabel)
	}

	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on sync of labels: %v\n", err)
	}

	retrieved := newTestVolume(128, 128, 128)
	retrieved.get(t, uuid, "labels", false)
	if len(retrieved.data) != 8*128*128*128 {
		t.Errorf("Retrieved post-split volume is incorrect size\n")
	}
	if err := retrieved.equals(expected); err != nil {
		t.Errorf("Split label volume not equal to expected volume: %v\n", err)
	}
	downres1 := newTestVolume(64, 64, 64)
	downres1.getScale(t, uuid, "labels", 1, false)
	if err := downres1.equalsDownres(expected); err != nil {
		t.Errorf("Split label volume failed level 1 down-scale: %v\n", err)
	}
	downres2 := newTestVolume(32, 32, 32)
	downres2.getScale(t, uuid, "labels", 2, false)
	if err := downres2.equalsDownres(downres1); err != nil {
		t.Errorf("Split label volume failed level 2 down-scale: %v\n", err)
	}

	retrieved.get(t, uuid, "labels", true)
	downres1.getScale(t, uuid, "labels", 1, true)
	if err := downres1.equalsDownres(retrieved); err != nil {
		t.Errorf("Split label supervoxel volume failed level 1 down-scale: %v\n", err)
	}
	downres2.getScale(t, uuid, "labels", 2, true)
	if err := downres2.equalsDownres(downres1); err != nil {
		t.Errorf("Split label supervoxel volume failed level 2 down-scale: %v\n", err)
	}

	// Check split body 5 usine legacy RLEs
	reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol/%d", server.WebAPIPath, uuid, 5)
	encoding = server.TestHTTP(t, "GET", reqStr, nil)
	bodysplit.checkSparseVol(t, encoding, dvid.OptionalBounds{})

	reqStr = fmt.Sprintf("%snode/%s/labels/size/5", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "GET", reqStr, nil)
	var jsonVal2 struct {
		Voxels uint64 `json:"voxels"`
	}
	if err := json.Unmarshal(r, &jsonVal2); err != nil {
		t.Fatalf("unable to get size: %v", err)
	}
	voxelsIn4 := body4.voxelSpans.Count()
	expectedVoxels := bodysplit.voxelSpans.Count()
	if jsonVal2.Voxels != expectedVoxels {
		t.Errorf("thought split body would have %d voxels, got %d\n", expectedVoxels, jsonVal2.Voxels)
	}
	dvid.Infof("body split had %d voxels\n", expectedVoxels)

	reqStr = fmt.Sprintf("%snode/%s/labels/size/4?supervoxels=true", server.WebAPIPath, uuid)
	server.TestBadHTTP(t, "GET", reqStr, nil)

	reqStr = fmt.Sprintf("%snode/%s/labels/size/6?supervoxels=true", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "GET", reqStr, nil)
	if err := json.Unmarshal(r, &jsonVal2); err != nil {
		t.Fatalf("unable to get size for supervoxel 6: %v", err)
	}
	if jsonVal2.Voxels != expectedVoxels {
		t.Errorf("expected split supervoxel to be %d voxels, got %d voxels\n", expectedVoxels, jsonVal2.Voxels)
	}
	reqStr = fmt.Sprintf("%snode/%s/labels/sizes?supervoxels=true", server.WebAPIPath, uuid)
	bodystr := "[4, 6]"
	r = server.TestHTTP(t, "GET", reqStr, bytes.NewBufferString(bodystr))
	if string(r) != fmt.Sprintf("[%d,%d]", 0, expectedVoxels) {
		t.Errorf("bad batch sizes result.  got: %s\n", string(r))
	}

	reqStr = fmt.Sprintf("%snode/%s/labels/size/7?supervoxels=true", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "GET", reqStr, nil)
	if err := json.Unmarshal(r, &jsonVal2); err != nil {
		t.Fatalf("unable to get size for supervoxel 7: %v", err)
	}
	if jsonVal2.Voxels != voxelsIn4-expectedVoxels {
		t.Errorf("thought remnant supervoxel 7 would have %d voxels remaining, got %d\n", voxelsIn4-expectedVoxels, jsonVal2.Voxels)
	}

	reqStr = fmt.Sprintf("%snode/%s/labels/supervoxel-splits", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "GET", reqStr, nil)
	if string(r) != fmt.Sprintf(`["%s",[[%d,4,7,6]]]`, uuid, datastore.InitialMutationID+1) {
		t.Fatalf("bad supervoxel-splits JSON return: %s\n", string(r))
	}

	// Make sure sparsevol for original body 4 is correct
	reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol/%d", server.WebAPIPath, uuid, 4)
	encoding = server.TestHTTP(t, "GET", reqStr, nil)
	bodyleft.checkSparseVol(t, encoding, dvid.OptionalBounds{})

	// make sure we verified supervoxel list works in /mapping.
	reqStr = fmt.Sprintf("%snode/%s/labels/mapping", server.WebAPIPath, uuid)
	svlist := "[1, 2, 3, 4, 5, 6, 7, 8, 1000]"
	r = server.TestHTTP(t, "GET", reqStr, bytes.NewBufferString(svlist))
	if string(r) != "[1,2,3,0,0,5,4,0,0]" {
		t.Errorf("bad verified /mapping result after split.  got: %s\n", string(r))
	}

	// Do a merge of two after the split
	testMerge := mergeJSON(`[4, 5]`)
	testMerge.send(t, uuid, "labels")

	// Make sure we wind up with original body 4
	reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol/4", server.WebAPIPath, uuid)
	encoding = server.TestHTTP(t, "GET", reqStr, nil)
	body4.checkSparseVol(t, encoding, dvid.OptionalBounds{})

	// make sure we verified supervoxel list works in /mapping.
	reqStr = fmt.Sprintf("%snode/%s/labels/mapping", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "GET", reqStr, bytes.NewBufferString(svlist))
	if string(r) != "[1,2,3,0,0,4,4,0,0]" {
		t.Errorf("bad verified /mapping result after split and merge.  got: %s\n", string(r))
	}
}

func getSVMapping(t *testing.T, uuid dvid.UUID, name string, supervoxel uint64) (mappedSV uint64) {
	url := fmt.Sprintf("%snode/%s/%s/mapping", server.WebAPIPath, uuid, name)
	svlist := fmt.Sprintf("[%d]", supervoxel)
	r := server.TestHTTP(t, "GET", url, bytes.NewBufferString(svlist))
	mapResp := []uint64{}
	if err := json.Unmarshal(r, &mapResp); err != nil {
		t.Fatalf("Unable to get mapping.  Instead got: %v, err: %v\n", mapResp, err)
	}
	if len(mapResp) != 1 {
		t.Fatalf("Expected 1 uint64 response from /mapping, got: %v\n", mapResp)
	}
	return mapResp[0]
}

func getIndex(t *testing.T, uuid dvid.UUID, name string, label uint64) *labels.Index {
	url := fmt.Sprintf("http://%snode/%s/%s/index/%d", server.WebAPIPath, uuid, name, label)
	data := server.TestHTTP(t, "GET", url, nil)
	if len(data) == 0 {
		t.Fatalf("Read label index %d returned no bytes\n", label)
	}
	idx := new(labels.Index)
	if err := pb.Unmarshal(data, idx); err != nil {
		t.Fatalf("couldn't unmarshal index: %v\n", err)
	}
	return idx
}

type blockCounts struct {
	bcoord dvid.ChunkPoint3d
	counts map[uint64]uint32
}

func checkIndex(t *testing.T, desc string, idx *labels.Index, blocks []blockCounts) {
	if len(idx.Blocks) != len(blocks) {
		t.Fatalf("Expected %d blocks for index %d (%s), got %d blocks: %s\n", len(blocks), idx.Label, desc, len(idx.Blocks), idx.StringDump(false))
	}
	seen := make(map[uint64]struct{})
	for _, block := range blocks {
		zyx, err := labels.IZYXStringToBlockIndex(block.bcoord.ToIZYXString())
		if err != nil {
			t.Fatalf("bad block coord (%s): %s\n", desc, block.bcoord)
		}
		seen[zyx] = struct{}{}
		svc, found := idx.Blocks[zyx]
		if !found {
			t.Fatalf("expected %s block %s to be in index %d but found none\n", desc, block.bcoord, idx.Label)
		}
		if len(svc.Counts) != len(block.counts) {
			t.Fatalf("expected %s block %s counts %v and got this instead: %v\n", desc, block.bcoord, block.counts, svc.Counts)
		}
		for supervoxel, count := range block.counts {
			actual, found := svc.Counts[supervoxel]
			if !found {
				t.Fatalf("expected label %d (%s) to have %d voxels, but label not in the retrieved index for block %s\n", supervoxel, desc, count, block.bcoord)
			}
			if actual != count {
				t.Fatalf("expected label %d (%s) to have %d voxels in block %s, but got %d voxels\n", supervoxel, desc, count, block.bcoord, actual)
			}
		}
	}
}

func TestArbitrarySplit(t *testing.T) {
	if err := server.OpenTest(); err != nil {
		t.Fatalf("can't open test server: %v\n", err)
	}
	defer server.CloseTest()

	uuid, _ := datastore.NewTestRepo()
	server.CreateTestInstance(t, uuid, "labelmap", "labels", dvid.Config{})

	labelA := uint64(1000)
	labelB := uint64(2000)

	data := make([]byte, 128*128*128*8)
	var x, y, z int32
	for z = 32; z < 96; z++ {
		for y = 32; y < 96; y++ {
			for x = 32; x < 96; x++ {
				i := (z*128*128 + y*128 + x) * 8
				binary.LittleEndian.PutUint64(data[i:i+8], labelA)
			}
		}
	}
	for z = 32; z < 96; z++ {
		for y = 96; y < 112; y++ {
			for x = 32; x < 112; x++ {
				i := (z*128*128 + y*128 + x) * 8
				binary.LittleEndian.PutUint64(data[i:i+8], labelB)
			}
		}
	}
	for z = 32; z < 96; z++ {
		for y = 32; y < 96; y++ {
			for x = 96; x < 112; x++ {
				i := (z*128*128 + y*128 + x) * 8
				binary.LittleEndian.PutUint64(data[i:i+8], labelB)
			}
		}
	}

	apiStr := fmt.Sprintf("%snode/%s/labels/raw/0_1_2/128_128_128/0_0_0", server.WebAPIPath, uuid)
	server.TestHTTP(t, "POST", apiStr, bytes.NewBuffer(data))
	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on sync of labels: %v\n", err)
	}

	// Get the original body indices
	origIndexA := getIndex(t, uuid, "labels", labelA)
	blocksA := []blockCounts{
		{
			bcoord: dvid.ChunkPoint3d{0, 0, 0},
			counts: map[uint64]uint32{labelA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 0, 0},
			counts: map[uint64]uint32{labelA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 1, 0},
			counts: map[uint64]uint32{labelA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 1, 0},
			counts: map[uint64]uint32{labelA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 0, 1},
			counts: map[uint64]uint32{labelA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 0, 1},
			counts: map[uint64]uint32{labelA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 1, 1},
			counts: map[uint64]uint32{labelA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 1, 1},
			counts: map[uint64]uint32{labelA: 32768},
		},
	}
	checkIndex(t, "original index A", origIndexA, blocksA)

	origIndexB := getIndex(t, uuid, "labels", labelB)
	blocksB := []blockCounts{
		{
			bcoord: dvid.ChunkPoint3d{1, 0, 0},
			counts: map[uint64]uint32{labelB: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 1, 0},
			counts: map[uint64]uint32{labelB: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 1, 0},
			counts: map[uint64]uint32{labelB: 16384 + 24576},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 0, 1},
			counts: map[uint64]uint32{labelB: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 1, 1},
			counts: map[uint64]uint32{labelB: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 1, 1},
			counts: map[uint64]uint32{labelB: 16384 + 24576},
		},
	}
	checkIndex(t, "original index B", origIndexB, blocksB)

	// merge the two supervoxels into one body
	mergeJSON := fmt.Sprintf("[%d,%d]", labelA, labelB)
	apiStr = fmt.Sprintf("%snode/%s/labels/merge", server.WebAPIPath, uuid)
	server.TestHTTP(t, "POST", apiStr, bytes.NewBufferString(mergeJSON))

	mergeIndex := getIndex(t, uuid, "labels", labelA)
	blocksAB := []blockCounts{
		{
			bcoord: dvid.ChunkPoint3d{0, 0, 0},
			counts: map[uint64]uint32{labelA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 0, 0},
			counts: map[uint64]uint32{labelA: 32768, labelB: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 1, 0},
			counts: map[uint64]uint32{labelA: 32768, labelB: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 1, 0},
			counts: map[uint64]uint32{labelA: 32768, labelB: 16384 + 24576},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 0, 1},
			counts: map[uint64]uint32{labelA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 0, 1},
			counts: map[uint64]uint32{labelA: 32768, labelB: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 1, 1},
			counts: map[uint64]uint32{labelA: 32768, labelB: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 1, 1},
			counts: map[uint64]uint32{labelA: 32768, labelB: 16384 + 24576},
		},
	}
	checkIndex(t, "merged index", mergeIndex, blocksAB)

	// do a split
	var split dvid.RLEs
	x = 56
	for z = 32; z < 96; z++ {
		for y = 32; y < 64; y++ {
			split = append(split, dvid.NewRLE(dvid.Point3d{x, y, z}, 40))
		}
	}
	x = 50 // 10 x 10 x 10 notch in (0, 1, 0) block just in LabelA area
	for z = 32; z < 42; z++ {
		for y = 64; y < 74; y++ {
			split = append(split, dvid.NewRLE(dvid.Point3d{x, y, z}, 10))
		}
	}
	x = 80
	for z = 32; z < 48; z++ {
		for y = 64; y < 100; y++ {
			split = append(split, dvid.NewRLE(dvid.Point3d{x, y, z}, 8))
		}
	}
	splitVoxels, splitRuns := split.Stats()
	dvid.Infof("split has %d voxels, %d runs\n", splitVoxels, splitRuns)

	buf := new(bytes.Buffer)
	buf.WriteByte(dvid.EncodingBinary)
	binary.Write(buf, binary.LittleEndian, uint8(3))          // # of dimensions
	binary.Write(buf, binary.LittleEndian, byte(0))           // dimension of run (X = 0)
	buf.WriteByte(byte(0))                                    // reserved for later
	binary.Write(buf, binary.LittleEndian, uint32(0))         // Placeholder for # voxels
	binary.Write(buf, binary.LittleEndian, uint32(splitRuns)) // Placeholder for # spans
	splitBytes, err := split.MarshalBinary()
	if err != nil {
		t.Errorf("Unable to serialize RLEs: %v\n", err)
	}
	buf.Write(splitBytes)

	apiStr = fmt.Sprintf("%snode/%s/labels/split/%d", server.WebAPIPath, uuid, labelA)
	r := server.TestHTTP(t, "POST", apiStr, buf)
	var splitResp struct {
		Label uint64 `json:"label"`
	}
	if err := json.Unmarshal(r, &splitResp); err != nil {
		t.Errorf("Unable to get new label from split.  Instead got: %v\n", splitResp)
	}
	dvid.Infof("Test split produced new label %d\n", splitResp.Label)

	splitIndex := getIndex(t, uuid, "labels", splitResp.Label)
	remainIndex := getIndex(t, uuid, "labels", labelA)

	zyx110, _ := labels.IZYXStringToBlockIndex(dvid.ChunkPoint3d{1, 1, 0}.ToIZYXString())
	svc, found := splitIndex.Blocks[zyx110]
	if !found {
		t.Fatalf("expected split index block (1,1,0) but not found\n")
	}
	if len(svc.Counts) != 2 {
		t.Fatalf("expected two supervoxels in split block (1,1,0), got: %v\n", svc.Counts)
	}
	var labelSplitA, labelSplitB, labelRemainA, labelRemainB uint64
	for label, count := range svc.Counts {
		switch count {
		case 512:
			labelSplitB = label
		case 4096:
			labelSplitA = label
		default:
			t.Fatalf("bad split block (1,1,0): %v\n", svc.Counts)
		}
	}
	svc, found = remainIndex.Blocks[zyx110]
	if !found {
		t.Fatalf("expected remain index block (1,1,0) but not found\n")
	}
	if len(svc.Counts) != 2 {
		t.Fatalf("expected two supervoxels in remain block (1,1,0), got: %v\n", svc.Counts)
	}
	for label, count := range svc.Counts {
		switch count {
		case 16384 + 24576 - 512:
			labelRemainB = label
		case 32768 - 4096:
			labelRemainA = label
		default:
			t.Fatalf("bad remain block (1,1,0): %v\n", svc.Counts)
		}
	}
	dvid.Infof("Supervoxel %d -> split %d, remain %d\n", labelA, labelSplitA, labelRemainA)
	dvid.Infof("Supervoxel %d -> split %d, remain %d\n", labelB, labelSplitB, labelRemainB)

	blocksSplit := []blockCounts{
		{
			bcoord: dvid.ChunkPoint3d{0, 0, 0},
			counts: map[uint64]uint32{labelSplitA: 8192},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 0, 0},
			counts: map[uint64]uint32{labelSplitA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 1, 0},
			counts: map[uint64]uint32{labelSplitA: 1000},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 1, 0},
			counts: map[uint64]uint32{labelSplitA: 4096, labelSplitB: 512},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 0, 1},
			counts: map[uint64]uint32{labelSplitA: 8192},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 0, 1},
			counts: map[uint64]uint32{labelSplitA: 32768},
		},
	}
	checkIndex(t, "split index", splitIndex, blocksSplit)

	blocksRemain := []blockCounts{
		{
			bcoord: dvid.ChunkPoint3d{0, 0, 0},
			counts: map[uint64]uint32{labelRemainA: 32768 - 8192},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 0, 0},
			counts: map[uint64]uint32{labelRemainB: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 1, 0},
			counts: map[uint64]uint32{labelRemainA: 31768, labelRemainB: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 1, 0},
			counts: map[uint64]uint32{labelRemainA: 32768 - 4096, labelRemainB: 16384 + 24576 - 512},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 0, 1},
			counts: map[uint64]uint32{labelRemainA: 32768 - 8192},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 0, 1},
			counts: map[uint64]uint32{labelRemainB: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 1, 1},
			counts: map[uint64]uint32{labelRemainA: 32768, labelRemainB: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 1, 1},
			counts: map[uint64]uint32{labelRemainA: 32768, labelRemainB: 16384 + 24576},
		},
	}
	checkIndex(t, "remain index", remainIndex, blocksRemain)

	blocks := testGetVolumeBlocks(t, uuid, "labels", true, dvid.Point3d{128, 128, 128}, dvid.Point3d{0, 0, 0})
	checkVoxels(t, blocks, blocksSplit, blocksRemain)
}

func checkVoxels(t *testing.T, blocks []labels.PositionedBlock, blocksSplit, blocksRemain []blockCounts) {
	expected := make(map[uint64]map[uint64]int32)
	for _, blockSplit := range blocksSplit {
		zyx, _ := labels.IZYXStringToBlockIndex(blockSplit.bcoord.ToIZYXString())
		counts, found := expected[zyx]
		if !found {
			counts = make(map[uint64]int32)
		}
		for sv, count := range blockSplit.counts {
			counts[sv] = int32(count)
		}
		expected[zyx] = counts
	}
	for _, blockRemain := range blocksRemain {
		zyx, _ := labels.IZYXStringToBlockIndex(blockRemain.bcoord.ToIZYXString())
		counts, found := expected[zyx]
		if !found {
			counts = make(map[uint64]int32)
		}
		for sv, count := range blockRemain.counts {
			counts[sv] = int32(count)
		}
		expected[zyx] = counts
	}
	actual := make(map[uint64]map[uint64]int32)
	for _, block := range blocks {
		zyx, _ := labels.IZYXStringToBlockIndex(block.BCoord)
		got := block.CalcNumLabels(nil)
		actual[zyx] = got
		want, found := expected[zyx]
		if !found {
			t.Fatalf("Received block %s but wasn't expected block\n", block.BCoord)
		}
		for sv, count := range got {
			wantcount, found := want[sv]
			if !found {
				t.Fatalf("got supervoxel %d in block %s but not expected\n", sv, block.BCoord)
			}
			if wantcount != count {
				t.Fatalf("expected supervoxel %d to have %d voxels in block %s, got %d\n", sv, wantcount, block.BCoord, count)
			}
		}
	}
	for zyx, counts := range expected {
		bcoord := labels.BlockIndexToIZYXString(zyx)
		got, found := actual[zyx]
		if !found {
			t.Fatalf("Expected to get block %s but not found\n", bcoord)
		}
		for sv, count := range counts {
			gotcount, found := got[sv]
			if !found {
				t.Fatalf("expected supervoxel %d in block %s but not received\n", sv, bcoord)
			}
			if gotcount != count {
				t.Fatalf("expected supervoxel %d to have %d voxels in block %s, got %d\n", sv, count, bcoord, gotcount)
			}
		}
	}
}

func TestSupervoxelSplit2(t *testing.T) {
	if err := server.OpenTest(); err != nil {
		t.Fatalf("can't open test server: %v\n", err)
	}
	defer server.CloseTest()

	uuid, _ := datastore.NewTestRepo()
	server.CreateTestInstance(t, uuid, "labelmap", "labels", dvid.Config{})

	labelA := uint64(1000)
	labelB := uint64(2000)

	data := make([]byte, 128*128*128*8)
	var x, y, z int32
	for z = 32; z < 96; z++ {
		for y = 32; y < 96; y++ {
			for x = 32; x < 96; x++ {
				i := (z*128*128 + y*128 + x) * 8
				binary.LittleEndian.PutUint64(data[i:i+8], labelA)
			}
		}
	}
	for z = 32; z < 96; z++ {
		for y = 96; y < 112; y++ {
			for x = 32; x < 112; x++ {
				i := (z*128*128 + y*128 + x) * 8
				binary.LittleEndian.PutUint64(data[i:i+8], labelB)
			}
		}
	}
	for z = 32; z < 96; z++ {
		for y = 32; y < 96; y++ {
			for x = 96; x < 112; x++ {
				i := (z*128*128 + y*128 + x) * 8
				binary.LittleEndian.PutUint64(data[i:i+8], labelB)
			}
		}
	}
	origdata := make([]byte, 128*128*128*8)
	copy(origdata, data)

	apiStr := fmt.Sprintf("%snode/%s/labels/raw/0_1_2/128_128_128/0_0_0", server.WebAPIPath, uuid)
	server.TestHTTP(t, "POST", apiStr, bytes.NewBuffer(data))
	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on sync of labels: %v\n", err)
	}

	// Get the original body indices
	origIndexB := getIndex(t, uuid, "labels", labelB)
	blocksB := []blockCounts{
		{
			bcoord: dvid.ChunkPoint3d{1, 0, 0},
			counts: map[uint64]uint32{labelB: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 1, 0},
			counts: map[uint64]uint32{labelB: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 1, 0},
			counts: map[uint64]uint32{labelB: 16384 + 24576},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 0, 1},
			counts: map[uint64]uint32{labelB: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 1, 1},
			counts: map[uint64]uint32{labelB: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 1, 1},
			counts: map[uint64]uint32{labelB: 16384 + 24576},
		},
	}
	checkIndex(t, "original index B", origIndexB, blocksB)

	// do a bad split
	var split dvid.RLEs
	x = 56
	for z = 32; z < 96; z++ {
		for y = 32; y < 64; y++ {
			split = append(split, dvid.NewRLE(dvid.Point3d{x, y, z}, 40))
		}
	}
	x = 80
	for z = 32; z < 48; z++ {
		for y = 64; y < 100; y++ {
			split = append(split, dvid.NewRLE(dvid.Point3d{x, y, z}, 8))
		}
	}
	_, splitRuns := split.Stats()

	buf := new(bytes.Buffer)
	buf.WriteByte(dvid.EncodingBinary)
	binary.Write(buf, binary.LittleEndian, uint8(3))          // # of dimensions
	binary.Write(buf, binary.LittleEndian, byte(0))           // dimension of run (X = 0)
	buf.WriteByte(byte(0))                                    // reserved for later
	binary.Write(buf, binary.LittleEndian, uint32(0))         // Placeholder for # voxels
	binary.Write(buf, binary.LittleEndian, uint32(splitRuns)) // Placeholder for # spans
	splitBytes, err := split.MarshalBinary()
	if err != nil {
		t.Errorf("Unable to serialize RLEs: %v\n", err)
	}
	buf.Write(splitBytes)

	apiStr = fmt.Sprintf("%snode/%s/labels/split-supervoxel/%d?split=189417&remain=8506273", server.WebAPIPath, uuid, labelB)
	server.TestBadHTTP(t, "POST", apiStr, buf)

	// make sure indices and volume is not changed
	afterBadSplit := getIndex(t, uuid, "labels", labelB)
	checkIndex(t, "label B after bad split", afterBadSplit, blocksB)

	postvol := newTestVolume(128, 128, 128)
	postvol.get(t, uuid, "labels", true)
	oldvol := testVolume{
		data: origdata,
		size: dvid.Point3d{128, 128, 128},
	}
	if err := oldvol.equals(postvol); err != nil {
		t.Fatalf("bad supervoxel volume get after aborted supervoxel split: %v\n", err)
	}
	postvol.get(t, uuid, "labels", false)
	if err := oldvol.equals(postvol); err != nil {
		t.Fatalf("bad label volume get after aborted supervoxel split: %v\n", err)
	}

	// run valid split
	split = nil
	x = 96
	for z = 32; z < 96; z++ {
		for y = 32; y < 96; y++ {
			split = append(split, dvid.NewRLE(dvid.Point3d{x, y, z}, 16))
		}
	}
	_, splitRuns = split.Stats()

	buf = new(bytes.Buffer)
	buf.WriteByte(dvid.EncodingBinary)
	binary.Write(buf, binary.LittleEndian, uint8(3))          // # of dimensions
	binary.Write(buf, binary.LittleEndian, byte(0))           // dimension of run (X = 0)
	buf.WriteByte(byte(0))                                    // reserved for later
	binary.Write(buf, binary.LittleEndian, uint32(0))         // Placeholder for # voxels
	binary.Write(buf, binary.LittleEndian, uint32(splitRuns)) // Placeholder for # spans
	splitBytes, err = split.MarshalBinary()
	if err != nil {
		t.Errorf("Unable to serialize RLEs: %v\n", err)
	}
	buf.Write(splitBytes)

	r := server.TestHTTP(t, "POST", apiStr, buf)
	var resp struct {
		Split  uint64 `json:"SplitSupervoxel"`
		Remain uint64 `json:"RemainSupervoxel"`
	}
	if err := json.Unmarshal(r, &resp); err != nil {
		t.Errorf("Unable to get new labels from supervoxel split.  Instead got: %v\n", resp)
	}
	dvid.Infof("supervoxel split %d -> split %d, remain %d\n", labelB, resp.Split, resp.Remain)
	if resp.Split != 189417 || resp.Remain != 8506273 {
		t.Errorf("bad split/remain supervoxel labels: %v\n", resp)
	}

	// label B index shouldn't have changed
	splitIndexB := getIndex(t, uuid, "labels", labelB)
	blocksSplitB := []blockCounts{
		{
			bcoord: dvid.ChunkPoint3d{1, 0, 0},
			counts: map[uint64]uint32{resp.Split: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 1, 0},
			counts: map[uint64]uint32{resp.Remain: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 1, 0},
			counts: map[uint64]uint32{resp.Split: 16384, resp.Remain: 24576},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 0, 1},
			counts: map[uint64]uint32{resp.Split: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 1, 1},
			counts: map[uint64]uint32{resp.Remain: 16384},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 1, 1},
			counts: map[uint64]uint32{resp.Split: 16384, resp.Remain: 24576},
		},
	}
	checkIndex(t, "split index B", splitIndexB, blocksSplitB)

	// supervoxels should have changed
	blocksA := []blockCounts{
		{
			bcoord: dvid.ChunkPoint3d{0, 0, 0},
			counts: map[uint64]uint32{labelA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 0, 0},
			counts: map[uint64]uint32{labelA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 1, 0},
			counts: map[uint64]uint32{labelA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 1, 0},
			counts: map[uint64]uint32{labelA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 0, 1},
			counts: map[uint64]uint32{labelA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 0, 1},
			counts: map[uint64]uint32{labelA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{0, 1, 1},
			counts: map[uint64]uint32{labelA: 32768},
		},
		{
			bcoord: dvid.ChunkPoint3d{1, 1, 1},
			counts: map[uint64]uint32{labelA: 32768},
		},
	}
	blocks := testGetVolumeBlocks(t, uuid, "labels", true, dvid.Point3d{128, 128, 128}, dvid.Point3d{0, 0, 0})
	checkVoxels(t, blocks, blocksSplitB, blocksA)
}

func testSplitSupervoxel(t *testing.T, testEnclosing bool) {
	if err := server.OpenTest(); err != nil {
		t.Fatalf("can't open test server: %v\n", err)
	}
	defer server.CloseTest()

	// Create testbed volume and data instances
	uuid, _ := initTestRepo()
	var config dvid.Config
	config.Set("MaxDownresLevel", "2")
	config.Set("BlockSize", "32,32,32") // Previous test data was on 32^3 blocks
	server.CreateTestInstance(t, uuid, "labelmap", "labels", config)

	// Post supervoxel volume
	original := createLabelTestVolume(t, uuid, "labels")
	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on sync of labels: %v\n", err)
	}

	reqStr := fmt.Sprintf("%snode/%s/labels/sparsevol/4", server.WebAPIPath, uuid)
	encoding := server.TestHTTP(t, "GET", reqStr, nil)
	body4.checkSparseVol(t, encoding, dvid.OptionalBounds{})

	if testEnclosing {
		testMerge := mergeJSON(`[3, 4]`)
		testMerge.send(t, uuid, "labels")

		reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol/3", server.WebAPIPath, uuid)
		encoding = server.TestHTTP(t, "GET", reqStr, nil)
	}

	// Create the sparsevol encoding for split area
	numspans := len(bodysplit.voxelSpans)
	rles := make(dvid.RLEs, numspans, numspans)
	for i, span := range bodysplit.voxelSpans {
		start := dvid.Point3d{span[2], span[1], span[0]}
		length := span[3] - span[2] + 1
		rles[i] = dvid.NewRLE(start, length)
	}

	// Create the split sparse volume binary
	buf := new(bytes.Buffer)
	buf.WriteByte(dvid.EncodingBinary)
	binary.Write(buf, binary.LittleEndian, uint8(3))         // # of dimensions
	binary.Write(buf, binary.LittleEndian, byte(0))          // dimension of run (X = 0)
	buf.WriteByte(byte(0))                                   // reserved for later
	binary.Write(buf, binary.LittleEndian, uint32(0))        // Placeholder for # voxels
	binary.Write(buf, binary.LittleEndian, uint32(numspans)) // Placeholder for # spans
	rleBytes, err := rles.MarshalBinary()
	if err != nil {
		t.Errorf("Unable to serialize RLEs: %v\n", err)
	}
	buf.Write(rleBytes)

	// Verify the max label is 4
	reqStr = fmt.Sprintf("%snode/%s/labels/maxlabel", server.WebAPIPath, uuid)
	jsonStr := server.TestHTTP(t, "GET", reqStr, nil)
	expectedJSON := `{"maxlabel": 4}`
	if string(jsonStr) != expectedJSON {
		t.Errorf("Expected this JSON returned from maxlabel:\n%s\nGot:\n%s\n", expectedJSON, string(jsonStr))
	}

	// Submit the split sparsevol for supervoxel 4 using RLES "bodysplit"
	reqStr = fmt.Sprintf("%snode/%s/labels/split-supervoxel/4", server.WebAPIPath, uuid)
	r := server.TestHTTP(t, "POST", reqStr, buf)
	var jsonVal struct {
		SplitSupervoxel  uint64
		RemainSupervoxel uint64
	}
	if err := json.Unmarshal(r, &jsonVal); err != nil {
		t.Errorf("Unable to get new label from split.  Instead got: %v\n", jsonVal)
	}
	if jsonVal.SplitSupervoxel != 5 {
		t.Errorf("Expected split label to be 5, instead got %d\n", jsonVal.SplitSupervoxel)
	}
	if jsonVal.RemainSupervoxel != 6 {
		t.Errorf("Expected remain label to be 6, instead got %d\n", jsonVal.RemainSupervoxel)
	}
	reqStr = fmt.Sprintf("%snode/%s/labels/maxlabel", server.WebAPIPath, uuid)
	jsonStr = server.TestHTTP(t, "GET", reqStr, nil)
	expectedJSON = `{"maxlabel": 6}`
	if string(jsonStr) != expectedJSON {
		t.Errorf("Expected this JSON returned from maxlabel:\n%s\nGot:\n%s\n", expectedJSON, string(jsonStr))
	}

	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on sync of labels: %v\n", err)
	}

	// Make sure retrieved body voxels are same as original
	retrieved := newTestVolume(128, 128, 128)
	retrieved.get(t, uuid, "labels", false)
	if len(retrieved.data) != 8*128*128*128 {
		t.Errorf("Retrieved post-split volume is incorrect size\n")
	}
	if testEnclosing {
		original.addBody(body4, 3)
	}
	if err := original.equals(retrieved); err != nil {
		t.Errorf("Post-supervoxel split label volume not equal to expected volume: %v\n", err)
	}
	downres1 := newTestVolume(64, 64, 64)
	downres1.getScale(t, uuid, "labels", 1, false)
	if err := downres1.equalsDownres(original); err != nil {
		t.Errorf("split supervoxel volume failed level 1 down-scale: %v\n", err)
	}
	downres2 := newTestVolume(32, 32, 32)
	downres2.getScale(t, uuid, "labels", 2, false)
	if err := downres2.equalsDownres(downres1); err != nil {
		t.Errorf("split supervoxel volume failed level 2 down-scale: %v\n", err)
	}

	// Make sure retrieved supervoxels are correct
	retrieved.get(t, uuid, "labels", true)
	if testEnclosing {
		original.addBody(body4, 4)
	}
	original.addBody(bodysplit, 5)
	original.addBody(bodyleft, 6)
	if err := original.equals(retrieved); err != nil {
		t.Errorf("Post-supervoxel split supervoxel volume not equal to expected supervoxels: %v\n", err)
	}

	// Check split body hasn't changed usine legacy RLEs
	if testEnclosing {
		reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol/3", server.WebAPIPath, uuid)
	} else {
		reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol/4", server.WebAPIPath, uuid)
	}
	splitBody := server.TestHTTP(t, "GET", reqStr, nil)
	if !bytes.Equal(splitBody, encoding) {
		t.Errorf("split body after supervoxel split has changed incorrectly!\n")
	}
}

func TestSplitSupervoxel(t *testing.T) {
	dvid.Infof("Testing non-agglomerated supervoxel...\n")
	testSplitSupervoxel(t, false)
	dvid.Infof("Testing agglomerated supervoxel...\n")
	testSplitSupervoxel(t, true)
}

func TestCompleteSplitSupervoxel(t *testing.T) {
	if err := server.OpenTest(); err != nil {
		t.Fatalf("can't open test server: %v\n", err)
	}
	defer server.CloseTest()

	// Create testbed volume and data instances
	uuid, _ := initTestRepo()
	var config dvid.Config
	config.Set("BlockSize", "32,32,32") // Previous test data was on 32^3 blocks
	server.CreateTestInstance(t, uuid, "labelmap", "labels", config)

	// Post supervoxel volume
	original := createLabelTestVolume(t, uuid, "labels")
	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on sync of labels: %v\n", err)
	}

	reqStr := fmt.Sprintf("%snode/%s/labels/sparsevol/4", server.WebAPIPath, uuid)
	encoding := server.TestHTTP(t, "GET", reqStr, nil)
	body4.checkSparseVol(t, encoding, dvid.OptionalBounds{})

	// Create the sparsevol encoding for split area
	numspans := len(body4.voxelSpans)
	rles := make(dvid.RLEs, numspans, numspans)
	for i, span := range body4.voxelSpans {
		start := dvid.Point3d{span[2], span[1], span[0]}
		length := span[3] - span[2] + 1
		rles[i] = dvid.NewRLE(start, length)
	}

	// Create the split sparse volume binary
	buf := new(bytes.Buffer)
	buf.WriteByte(dvid.EncodingBinary)
	binary.Write(buf, binary.LittleEndian, uint8(3))         // # of dimensions
	binary.Write(buf, binary.LittleEndian, byte(0))          // dimension of run (X = 0)
	buf.WriteByte(byte(0))                                   // reserved for later
	binary.Write(buf, binary.LittleEndian, uint32(0))        // Placeholder for # voxels
	binary.Write(buf, binary.LittleEndian, uint32(numspans)) // Placeholder for # spans
	rleBytes, err := rles.MarshalBinary()
	if err != nil {
		t.Errorf("Unable to serialize RLEs: %v\n", err)
	}
	buf.Write(rleBytes)

	// Before split, the supervoxel should be mapped to itself.
	mappedSV := getSVMapping(t, uuid, "labels", 4)
	if mappedSV != 4 {
		t.Fatalf("Expected supervoxel 4 to be mapped to itself before split.  Got %d instead.\n", mappedSV)
	}

	// Submit the split sparsevol for supervoxel 4 using its entire body
	reqStr = fmt.Sprintf("%snode/%s/labels/split-supervoxel/4", server.WebAPIPath, uuid)
	r := server.TestHTTP(t, "POST", reqStr, buf)
	var jsonVal struct {
		SplitSupervoxel  uint64
		RemainSupervoxel uint64
	}
	if err := json.Unmarshal(r, &jsonVal); err != nil {
		t.Errorf("Unable to get new label from split.  Instead got: %v\n", jsonVal)
	}
	if jsonVal.SplitSupervoxel != 5 {
		t.Errorf("Expected split label to be 5, instead got %d\n", jsonVal.SplitSupervoxel)
	}
	if jsonVal.RemainSupervoxel != 6 {
		t.Errorf("Expected remain label to be 6, instead got %d\n", jsonVal.RemainSupervoxel)
	}
	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on sync of labels: %v\n", err)
	}

	// Make sure the split supervoxel is now mapped to 0.
	mappedSV = getSVMapping(t, uuid, "labels", 4)
	if mappedSV != 0 {
		t.Fatalf("Expected supervoxel 4 to map to 0 after split.  Got %d instead.\n", mappedSV)
	}

	// Make sure retrieved body voxels are same as original
	retrieved := newTestVolume(128, 128, 128)
	retrieved.get(t, uuid, "labels", false)
	if len(retrieved.data) != 8*128*128*128 {
		t.Errorf("Retrieved post-split volume is incorrect size\n")
	}
	if err := original.equals(retrieved); err != nil {
		t.Errorf("Post-supervoxel split label volume not equal to expected volume: %v\n", err)
	}

	// Submit the split sparsevol for supervoxel 4 using no RLEs
	buf = new(bytes.Buffer)
	buf.WriteByte(dvid.EncodingBinary)
	binary.Write(buf, binary.LittleEndian, uint8(3))  // # of dimensions
	binary.Write(buf, binary.LittleEndian, byte(0))   // dimension of run (X = 0)
	buf.WriteByte(byte(0))                            // reserved for later
	binary.Write(buf, binary.LittleEndian, uint32(0)) // Placeholder for # voxels
	binary.Write(buf, binary.LittleEndian, uint32(0)) // Placeholder for # spans

	reqStr = fmt.Sprintf("%snode/%s/labels/split-supervoxel/5", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "POST", reqStr, buf)
	if err := json.Unmarshal(r, &jsonVal); err != nil {
		t.Errorf("Unable to get new label from split.  Instead got: %v\n", jsonVal)
	}
	if jsonVal.SplitSupervoxel != 7 {
		t.Errorf("Expected split label to be 5, instead got %d\n", jsonVal.SplitSupervoxel)
	}
	if jsonVal.RemainSupervoxel != 8 {
		t.Errorf("Expected remain label to be 6, instead got %d\n", jsonVal.RemainSupervoxel)
	}
	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on sync of labels: %v\n", err)
	}

	// Make sure retrieved body voxels are same as original
	retrieved = newTestVolume(128, 128, 128)
	retrieved.get(t, uuid, "labels", false)
	if len(retrieved.data) != 8*128*128*128 {
		t.Errorf("Retrieved post-split volume is incorrect size\n")
	}
	if err := original.equals(retrieved); err != nil {
		t.Errorf("Post-supervoxel split label volume not equal to expected volume: %v\n", err)
	}
}

type labelType interface {
	GetLabelPoints(dvid.VersionID, []dvid.Point3d, uint8, bool) ([]uint64, error)
	GetPointsInSupervoxels(dvid.VersionID, []dvid.Point3d, []uint64) ([]bool, error)
}

func TestMergeCleave(t *testing.T) {
	if err := server.OpenTest(); err != nil {
		t.Fatalf("can't open test server: %v\n", err)
	}
	defer server.CloseTest()

	// Create testbed volume and data instances
	uuid, _ := initTestRepo()
	var config dvid.Config
	config.Set("BlockSize", "32,32,32") // Previous test data was on 32^3 blocks
	server.CreateTestInstance(t, uuid, "labelmap", "labels", config)

	// Post standard label 1-4 volume
	expected := createLabelTestVolume(t, uuid, "labels")

	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on sync of labels: %v\n", err)
	}

	reqStr := fmt.Sprintf("%snode/%s/labels/sparsevol/4", server.WebAPIPath, uuid)
	sv4encoding := server.TestHTTP(t, "GET", reqStr, nil)
	body4.checkSparseVol(t, sv4encoding, dvid.OptionalBounds{})

	// Check direct label queries for points
	pts := []dvid.Point3d{
		{25, 40, 15}, // body 1
		{15, 57, 34},
		{30, 27, 57}, // body 2
		{63, 39, 45},
		{59, 56, 39}, // body 3
		{75, 40, 73}, // body 4
	}
	d, err := datastore.GetDataByUUIDName(uuid, "labels")
	if err != nil {
		t.Fatalf("Can't get labels instance from test db: %v\n", err)
	}
	labeldata, ok := d.(labelType)
	if !ok {
		t.Fatalf("Didn't get labels data that conforms to expected functions.\n")
	}
	v, err := datastore.VersionFromUUID(uuid)
	if err != nil {
		t.Fatalf("couldn't get version from UUID\n")
	}
	mapped, err := labeldata.GetLabelPoints(v, pts, 0, false)
	if err != nil {
		t.Errorf("bad response to GetLabelsPoints: %v\n", err)
	}
	if len(mapped) != 6 || !reflect.DeepEqual(mapped, []uint64{1, 1, 2, 2, 3, 4}) {
		t.Fatalf("bad return from GetLabelPoints: %v\n", mapped)
	}
	inSupervoxels, err := labeldata.GetPointsInSupervoxels(v, pts, []uint64{1})
	if err != nil {
		t.Errorf("bad response to GetPointsInSupervoxels: %v\n", err)
	}
	if len(inSupervoxels) != 6 || !reflect.DeepEqual(inSupervoxels, []bool{true, true, false, false, false, false}) {
		t.Fatalf("bad return from GetPointsInSupervoxels: %v\n", inSupervoxels)
	}
	inSupervoxels, err = labeldata.GetPointsInSupervoxels(v, pts, []uint64{3})
	if err != nil {
		t.Errorf("bad response to GetPointsInSupervoxels: %v\n", err)
	}
	if len(inSupervoxels) != 6 || !reflect.DeepEqual(inSupervoxels, []bool{false, false, false, false, true, false}) {
		t.Fatalf("bad return from GetPointsInSupervoxels: %v\n", inSupervoxels)
	}

	// Merge of 3 into 4
	testMerge := mergeJSON(`[4, 3]`)
	testMerge.send(t, uuid, "labels")

	reqStr = fmt.Sprintf("%snode/%s/labels/lastmod/4", server.WebAPIPath, uuid)
	r := server.TestHTTP(t, "GET", reqStr, nil)
	var infoVal struct {
		MutID uint64 `json:"mutation id"`
		User  string `json:"last mod user"`
		App   string `json:"last mod app"`
		Time  string `json:"last mod time"`
	}
	if err := json.Unmarshal(r, &infoVal); err != nil {
		t.Fatalf("unable to get mod info for label 4: %v", err)
	}
	if infoVal.MutID != datastore.InitialMutationID+1 {
		t.Errorf("expected mutation id %d, got %d\n", datastore.InitialMutationID+1, infoVal.MutID)
	}

	// Check direct label queries for points after merge
	mapped, err = labeldata.GetLabelPoints(v, pts, 0, false)
	if err != nil {
		t.Errorf("bad response to GetLabelsPoints: %v\n", err)
	}
	if len(mapped) != 6 || !reflect.DeepEqual(mapped, []uint64{1, 1, 2, 2, 4, 4}) {
		t.Fatalf("bad return from GetLabelPoints: %v\n", mapped)
	}
	inSupervoxels, err = labeldata.GetPointsInSupervoxels(v, pts, []uint64{3})
	if err != nil {
		t.Errorf("bad response to GetPointsInSupervoxels: %v\n", err)
	}
	if len(inSupervoxels) != 6 || !reflect.DeepEqual(inSupervoxels, []bool{false, false, false, false, true, false}) {
		t.Fatalf("bad return from GetPointsInSupervoxels: %v\n", inSupervoxels)
	}
	inSupervoxels, err = labeldata.GetPointsInSupervoxels(v, pts, []uint64{4})
	if err != nil {
		t.Errorf("bad response to GetPointsInSupervoxels: %v\n", err)
	}
	if len(inSupervoxels) != 6 || !reflect.DeepEqual(inSupervoxels, []bool{false, false, false, false, false, true}) {
		t.Fatalf("bad return from GetPointsInSupervoxels: %v\n", inSupervoxels)
	}
	inSupervoxels, err = labeldata.GetPointsInSupervoxels(v, pts, []uint64{3, 4})
	if err != nil {
		t.Errorf("bad response to GetPointsInSupervoxels: %v\n", err)
	}
	if len(inSupervoxels) != 6 || !reflect.DeepEqual(inSupervoxels, []bool{false, false, false, false, true, true}) {
		t.Fatalf("bad return from GetPointsInSupervoxels: %v\n", inSupervoxels)
	}

	// Check sizes
	reqStr = fmt.Sprintf("%snode/%s/labels/size/4", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "GET", reqStr, nil)
	var jsonVal struct {
		Voxels uint64 `json:"voxels"`
	}
	if err := json.Unmarshal(r, &jsonVal); err != nil {
		t.Fatalf("unable to get size for label 4: %v", err)
	}
	voxelsIn3 := body3.voxelSpans.Count()
	voxelsIn4 := body4.voxelSpans.Count()
	if jsonVal.Voxels != voxelsIn3+voxelsIn4 {
		t.Errorf("thought label 4 would have %d voxels, got %d\n", voxelsIn3+voxelsIn4, jsonVal.Voxels)
	}
	reqStr = fmt.Sprintf("%snode/%s/labels/size/4?supervoxels=true", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "GET", reqStr, nil)
	if err := json.Unmarshal(r, &jsonVal); err != nil {
		t.Fatalf("unable to get size for supervoxel 4: %v", err)
	}
	if jsonVal.Voxels != voxelsIn4 {
		t.Errorf("thought supervoxel 4 would have %d voxels, got %d\n", voxelsIn4, jsonVal.Voxels)
	}

	// Make sure label 3 sparsevol has been removed.
	reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol/%d", server.WebAPIPath, uuid, 3)
	server.TestBadHTTP(t, "GET", reqStr, nil)

	retrieved := newTestVolume(128, 128, 128)
	retrieved.get(t, uuid, "labels", false)
	if len(retrieved.data) != 8*128*128*128 {
		t.Errorf("Retrieved label volume is incorrect size\n")
	}
	if !retrieved.isLabel(2, &body2) {
		t.Errorf("Expected label 2 original voxels to remain.  Instead some were removed.\n")
	}
	if retrieved.hasLabel(3, &body3) {
		t.Errorf("Found label 3 when all label 3 should have been merged into label 4!\n")
	}
	if !retrieved.isLabel(4, &body3) {
		t.Errorf("Incomplete merging.  Label 4 should have taken over full extent of label 3\n")
	}
	expected.addBody(body3, 4)
	if err := retrieved.equals(expected); err != nil {
		t.Errorf("Merged label volume not equal to expected merged volume: %v\n", err)
	}

	retrieved.get(t, uuid, "labels", true) // check supervoxels
	if len(retrieved.data) != 8*128*128*128 {
		t.Errorf("Retrieved supervoxel volume is incorrect size\n")
	}
	if !retrieved.isLabel(1, &body1) {
		t.Errorf("Expected supervoxel 1 original voxels to remain.  Instead some were removed.\n")
	}
	if !retrieved.isLabel(2, &body2) {
		t.Errorf("Expected supervoxel 2 original voxels to remain.  Instead some were removed.\n")
	}
	if !retrieved.hasLabel(3, &body3) {
		t.Errorf("Expected supervoxel 3 original voxels to remain.  Instead some were removed.\n")
	}
	if !retrieved.isLabel(4, &body4) {
		t.Errorf("Expected supervoxel 4 original voxels to remain.  Instead some were removed.\n")
	}

	// Cleave supervoxel 3 out of label 4.
	reqStr = fmt.Sprintf("%snode/%s/labels/cleave/4?u=mrsmith&app=myapp", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "POST", reqStr, bytes.NewBufferString("[3]"))
	var jsonVal2 struct {
		CleavedLabel uint64
	}
	if err := json.Unmarshal(r, &jsonVal2); err != nil {
		t.Errorf("Unable to get new label from cleave.  Instead got: %v\n", jsonVal2)
	}

	reqStr = fmt.Sprintf("%snode/%s/labels/lastmod/4", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "GET", reqStr, nil)
	if err := json.Unmarshal(r, &infoVal); err != nil {
		t.Fatalf("unable to get mod info for label 4: %v", err)
	}
	if infoVal.MutID != datastore.InitialMutationID+2 || infoVal.App != "myapp" || infoVal.User != "mrsmith" {
		t.Errorf("unexpected last mod info: %v\n", infoVal)
	}

	reqStr = fmt.Sprintf("%snode/%s/labels/maxlabel", server.WebAPIPath, uuid)
	jsonStr := server.TestHTTP(t, "GET", reqStr, nil)
	expectedJSON := `{"maxlabel": 5}`
	if string(jsonStr) != expectedJSON {
		t.Errorf("Expected this JSON returned from maxlabel:\n%s\nGot:\n%s\n", expectedJSON, string(jsonStr))
	}

	retrieved.get(t, uuid, "labels", false)
	if len(retrieved.data) != 8*128*128*128 {
		t.Fatalf("Retrieved label volume is incorrect size\n")
	}
	expected.addBody(body3, 5)
	if err := expected.equals(retrieved); err != nil {
		t.Fatalf("Post-cleave label volume not equal to expected volume: %v\n", err)
	}

	retrieved.get(t, uuid, "labels", true)
	if len(retrieved.data) != 8*128*128*128 {
		t.Fatalf("Retrieved supervoxel volume is incorrect size\n")
	}
	expected.addBody(body3, 3)
	if err := expected.equals(retrieved); err != nil {
		t.Fatalf("Post-cleave supervoxel volume not equal to expected volume: %v\n", err)
	}

	// supervoxel 3 (original body 3) should now be label 5
	reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol/5", server.WebAPIPath, uuid)
	encoding := server.TestHTTP(t, "GET", reqStr, nil)
	body3.checkSparseVol(t, encoding, dvid.OptionalBounds{})

	// make sure you can't cleave all supervoxels from a label
	reqStr = fmt.Sprintf("%snode/%s/labels/cleave/4", server.WebAPIPath, uuid)
	server.TestBadHTTP(t, "POST", reqStr, bytes.NewBufferString("[4]"))

	// Check direct label queries for points after cleave
	mapped, err = labeldata.GetLabelPoints(v, pts, 0, false)
	if err != nil {
		t.Errorf("bad response to GetLabelsPoints: %v\n", err)
	}
	if len(mapped) != 6 || !reflect.DeepEqual(mapped, []uint64{1, 1, 2, 2, 5, 4}) {
		t.Fatalf("bad return from GetLabelPoints: %v\n", mapped)
	}
	inSupervoxels, err = labeldata.GetPointsInSupervoxels(v, pts, []uint64{3})
	if err != nil {
		t.Errorf("bad response to GetPointsInSupervoxels: %v\n", err)
	}
	if len(inSupervoxels) != 6 || !reflect.DeepEqual(inSupervoxels, []bool{false, false, false, false, true, false}) {
		t.Fatalf("bad return from GetPointsInSupervoxels: %v\n", inSupervoxels)
	}
	inSupervoxels, err = labeldata.GetPointsInSupervoxels(v, pts, []uint64{4})
	if err != nil {
		t.Errorf("bad response to GetPointsInSupervoxels: %v\n", err)
	}
	if len(inSupervoxels) != 6 || !reflect.DeepEqual(inSupervoxels, []bool{false, false, false, false, false, true}) {
		t.Fatalf("bad return from GetPointsInSupervoxels: %v\n", inSupervoxels)
	}
	inSupervoxels, err = labeldata.GetPointsInSupervoxels(v, pts, []uint64{4})
	if err != nil {
		t.Fatalf("bad response to GetPointsInSupervoxels: %v\n", err)
	}
	if len(inSupervoxels) != 6 || !reflect.DeepEqual(inSupervoxels, []bool{false, false, false, false, false, true}) {
		t.Fatalf("bad return from GetPointsInSupervoxels: %v\n", inSupervoxels)
	}
	inSupervoxels, err = labeldata.GetPointsInSupervoxels(v, pts, []uint64{3})
	if err != nil {
		t.Errorf("bad response to GetPointsInSupervoxels: %v\n", err)
	}
	if len(inSupervoxels) != 6 || !reflect.DeepEqual(inSupervoxels, []bool{false, false, false, false, true, false}) {
		t.Fatalf("bad return from GetPointsInSupervoxels: %v\n", inSupervoxels)
	}

	// Check storage stats
	stats, err := datastore.GetStorageDetails()
	if err != nil {
		t.Fatalf("error getting storage details: %v\n", err)
	}
	dvid.Infof("storage details: %s\n", stats)
}

func TestMultiscaleMergeCleave(t *testing.T) {
	testConfig := server.TestConfig{CacheSize: map[string]int{"labelmap": 10}}
	// var testConfig server.TestConfig
	if err := server.OpenTest(testConfig); err != nil {
		t.Fatalf("can't open test server: %v\n", err)
	}
	defer server.CloseTest()

	// Create testbed volume
	uuid, _ := initTestRepo()
	var config dvid.Config
	config.Set("MaxDownresLevel", "2")
	server.CreateTestInstance(t, uuid, "labelmap", "labels", config)

	// Create an easily interpreted label volume with a couple of labels.
	volume := newTestVolume(128, 128, 128)
	volume.addSubvol(dvid.Point3d{40, 40, 40}, dvid.Point3d{40, 40, 40}, 1)
	volume.addSubvol(dvid.Point3d{40, 40, 80}, dvid.Point3d{40, 40, 40}, 2)
	volume.addSubvol(dvid.Point3d{80, 40, 40}, dvid.Point3d{40, 40, 40}, 13)
	volume.addSubvol(dvid.Point3d{40, 80, 40}, dvid.Point3d{40, 40, 40}, 209)
	volume.addSubvol(dvid.Point3d{80, 80, 40}, dvid.Point3d{40, 40, 40}, 311)
	volume.put(t, uuid, "labels")

	// Verify initial ingest for hi-res
	if err := downres.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on update for labels: %v\n", err)
	}

	sizeReq := fmt.Sprintf("%snode/%s/labels/sparsevol-size/1", server.WebAPIPath, uuid)
	sizeResp := server.TestHTTP(t, "GET", sizeReq, nil)
	if string(sizeResp) != `{"voxels": 64000, "numblocks": 8, "minvoxel": [0, 0, 0], "maxvoxel": [127, 127, 127]}` {
		t.Errorf("bad response to sparsevol-size endpoint: %s\n", string(sizeResp))
	}

	testPoints0 := map[uint64][3]int32{
		0:   {18, 18, 18},
		1:   {45, 45, 45},
		2:   {50, 50, 100},
		13:  {100, 60, 60},
		209: {55, 100, 55},
		311: {81, 81, 41},
	}
	testPoints1 := map[uint64][3]int32{
		0:   {35, 34, 2},
		1:   {30, 30, 30},
		2:   {21, 21, 45},
		13:  {45, 21, 36},
		209: {21, 50, 35},
		311: {45, 55, 35},
	}
	testPoints2 := map[uint64][3]int32{
		0:   {15, 16, 2},
		1:   {15, 15, 15},
		2:   {11, 11, 23},
		13:  {23, 11, 18},
		209: {11, 25, 18},
		311: {23, 28, 18},
	}

	hires := newTestVolume(128, 128, 128)
	hires.get(t, uuid, "labels", false)

	strarray := make([]string, len(testPoints0))
	var sentLabels []uint64
	i := 0
	for label, pt := range testPoints0 {
		hires.verifyLabel(t, label, pt[0], pt[1], pt[2])
		sentLabels = append(sentLabels, label)
		strarray[i] = fmt.Sprintf("[%d,%d,%d]", pt[0], pt[1], pt[2])
		i++
	}
	coordsStr := "[" + strings.Join(strarray, ",") + "]"
	reqStr := fmt.Sprintf("%snode/%s/labels/labels", server.WebAPIPath, uuid)
	r := server.TestHTTP(t, "GET", reqStr, bytes.NewBufferString(coordsStr))
	var gotLabels []uint64
	if err := json.Unmarshal(r, &gotLabels); err != nil {
		t.Errorf("Unable to get label array from GET /labels.  Instead got: %v\n", string(r))
	}
	for i, sent := range sentLabels {
		if sent != gotLabels[i] {
			t.Errorf("expected GET /labels to return label %d in position %d, got %d back\n", sent, i, gotLabels[i])
		}
	}

	// Check the first downres: 64^3
	downres1 := newTestVolume(64, 64, 64)
	downres1.getScale(t, uuid, "labels", 1, false)
	sentLabels = []uint64{}
	i = 0
	for label, pt := range testPoints1 {
		downres1.verifyLabel(t, label, pt[0], pt[1], pt[2])
		sentLabels = append(sentLabels, label)
		strarray[i] = fmt.Sprintf("[%d,%d,%d]", pt[0], pt[1], pt[2])
		i++
	}
	coordsStr = "[" + strings.Join(strarray, ",") + "]"
	reqStr = fmt.Sprintf("%snode/%s/labels/labels?scale=1", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "GET", reqStr, bytes.NewBufferString(coordsStr))
	gotLabels = []uint64{}
	if err := json.Unmarshal(r, &gotLabels); err != nil {
		t.Errorf("Unable to get label array from GET /labels.  Instead got: %v\n", string(r))
	}
	for i, sent := range sentLabels {
		if sent != gotLabels[i] {
			t.Errorf("expected GET /labels to return label %d in position %d, got %d back\n", sent, i, gotLabels[i])
		}
	}
	expected1 := newTestVolume(64, 64, 64)
	expected1.addSubvol(dvid.Point3d{20, 20, 20}, dvid.Point3d{20, 20, 20}, 1)
	expected1.addSubvol(dvid.Point3d{20, 20, 40}, dvid.Point3d{20, 20, 20}, 2)
	expected1.addSubvol(dvid.Point3d{40, 20, 20}, dvid.Point3d{20, 20, 20}, 13)
	expected1.addSubvol(dvid.Point3d{20, 40, 20}, dvid.Point3d{20, 20, 20}, 209)
	expected1.addSubvol(dvid.Point3d{40, 40, 20}, dvid.Point3d{20, 20, 20}, 311)
	if err := expected1.equals(downres1); err != nil {
		t.Errorf("1st downres isn't what is expected: %v\n", err)
	}

	// Check the second downres to voxel: 32^3
	downres2 := newTestVolume(32, 32, 32)
	downres2.getScale(t, uuid, "labels", 2, false)
	for label, pt := range testPoints2 {
		downres2.verifyLabel(t, label, pt[0], pt[1], pt[2])
	}
	expected2 := newTestVolume(32, 32, 32)
	expected2.addSubvol(dvid.Point3d{10, 10, 10}, dvid.Point3d{10, 10, 10}, 1)
	expected2.addSubvol(dvid.Point3d{10, 10, 20}, dvid.Point3d{10, 10, 10}, 2)
	expected2.addSubvol(dvid.Point3d{20, 10, 10}, dvid.Point3d{10, 10, 10}, 13)
	expected2.addSubvol(dvid.Point3d{10, 20, 10}, dvid.Point3d{10, 10, 10}, 209)
	expected2.addSubvol(dvid.Point3d{20, 20, 10}, dvid.Point3d{10, 10, 10}, 311)
	if err := expected2.equals(downres2); err != nil {
		t.Errorf("2nd downres isn't what is expected: %v\n", err)
	}

	var labelJSON struct {
		Label uint64
	}
	for i := 0; i < 100; i++ {
		for label, pt := range testPoints0 {
			labelReq := fmt.Sprintf("%snode/%s/labels/label/%d_%d_%d", server.WebAPIPath, uuid, pt[0], pt[1], pt[2])
			labelResp := server.TestHTTP(t, "GET", labelReq, nil)
			if err := json.Unmarshal(labelResp, &labelJSON); err != nil {
				t.Errorf("problem decoding response (%s): %v\n", string(labelResp), err)
			}
			if labelJSON.Label != label {
				t.Errorf("bad response to label query on (%d, %d, %d): %s\n", pt[0], pt[1], pt[2], string(labelResp))
			}
		}
	}
	for label, pt := range testPoints1 {
		labelReq := fmt.Sprintf("%snode/%s/labels/label/%d_%d_%d?scale=1", server.WebAPIPath, uuid, pt[0], pt[1], pt[2])
		labelResp := server.TestHTTP(t, "GET", labelReq, nil)
		if err := json.Unmarshal(labelResp, &labelJSON); err != nil {
			t.Errorf("problem decoding response (%s): %v\n", string(labelResp), err)
		}
		if labelJSON.Label != label {
			t.Errorf("bad response to label query on (%d, %d, %d): %s\n", pt[0], pt[1], pt[2], string(labelResp))
		}
	}
	for label, pt := range testPoints2 {
		labelReq := fmt.Sprintf("%snode/%s/labels/label/%d_%d_%d?scale=2", server.WebAPIPath, uuid, pt[0], pt[1], pt[2])
		labelResp := server.TestHTTP(t, "GET", labelReq, nil)
		if err := json.Unmarshal(labelResp, &labelJSON); err != nil {
			t.Errorf("problem decoding response (%s): %v\n", string(labelResp), err)
		}
		if labelJSON.Label != label {
			t.Errorf("bad response to label query on (%d, %d, %d): %s\n", pt[0], pt[1], pt[2], string(labelResp))
		}
	}

	// Test merge of 2 and 13 into 1
	testMerge := mergeJSON(`[1, 2, 13]`)
	testMerge.send(t, uuid, "labels")

	sizeReq = fmt.Sprintf("%snode/%s/labels/sparsevol-size/1", server.WebAPIPath, uuid)
	sizeResp = server.TestHTTP(t, "GET", sizeReq, nil)
	if string(sizeResp) != `{"voxels": 192000, "numblocks": 8, "minvoxel": [0, 0, 0], "maxvoxel": [127, 127, 127]}` {
		t.Errorf("bad response to sparsevol-size endpoint: %s\n", string(sizeResp))
	}
	sizeReq = fmt.Sprintf("%snode/%s/labels/sparsevol-size/2?supervoxels=true", server.WebAPIPath, uuid)
	sizeResp = server.TestHTTP(t, "GET", sizeReq, nil)
	if string(sizeResp) != `{"voxels": 64000, "numblocks": 4, "minvoxel": [0, 0, 64], "maxvoxel": [127, 127, 127]}` {
		t.Errorf("bad response to sparsevol-size endpoint: %s\n", string(sizeResp))
	}
	headReq := fmt.Sprintf("%snode/%s/labels/sparsevol/2?supervoxels=true", server.WebAPIPath, uuid)
	headResp := server.TestHTTPResponse(t, "HEAD", headReq, nil)
	if headResp.Code != http.StatusOK {
		t.Errorf("HEAD on %s did not return OK.  Status = %d\n", headReq, headResp.Code)
	}

	mapping := map[uint64]uint64{
		1:   1,
		2:   1,
		13:  1,
		209: 209,
		311: 311,
	}
	sentLabels = []uint64{}
	i = 0
	for label, pt := range testPoints0 {
		labelReq := fmt.Sprintf("%snode/%s/labels/label/%d_%d_%d", server.WebAPIPath, uuid, pt[0], pt[1], pt[2])
		labelResp := server.TestHTTP(t, "GET", labelReq, nil)
		if err := json.Unmarshal(labelResp, &labelJSON); err != nil {
			t.Errorf("problem decoding response (%s): %v\n", string(labelResp), err)
		}
		if labelJSON.Label != mapping[label] {
			t.Errorf("bad response to label query on (%d, %d, %d): %s\n", pt[0], pt[1], pt[2], string(labelResp))
		}
		labelReq = fmt.Sprintf("%snode/%s/labels/label/%d_%d_%d?supervoxels=true", server.WebAPIPath, uuid, pt[0], pt[1], pt[2])
		labelResp = server.TestHTTP(t, "GET", labelReq, nil)
		if err := json.Unmarshal(labelResp, &labelJSON); err != nil {
			t.Errorf("problem decoding response (%s): %v\n", string(labelResp), err)
		}
		if labelJSON.Label != label {
			t.Errorf("expected label %d to query on (%d, %d, %d): %s\n", label, pt[0], pt[1], pt[2], string(labelResp))
		}
		sentLabels = append(sentLabels, label)
		strarray[i] = fmt.Sprintf("%d", label)
		i++
	}
	supervoxelsStr := "[" + strings.Join(strarray, ",") + "]"
	reqStr = fmt.Sprintf("%snode/%s/labels/mapping", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "GET", reqStr, bytes.NewBufferString(supervoxelsStr))
	gotLabels = []uint64{}
	if err := json.Unmarshal(r, &gotLabels); err != nil {
		t.Errorf("Unable to get label array from GET /mapping.  Instead got: %v\n", string(r))
	}
	for i, sent := range sentLabels {
		if mapping[sent] != gotLabels[i] {
			t.Fatalf("expected GET /mapping to return label %d in position %d, got %d back\n", mapping[sent], i, gotLabels[i])
		}
	}

	for label, pt := range testPoints1 {
		labelReq := fmt.Sprintf("%snode/%s/labels/label/%d_%d_%d?scale=1", server.WebAPIPath, uuid, pt[0], pt[1], pt[2])
		labelResp := server.TestHTTP(t, "GET", labelReq, nil)
		if err := json.Unmarshal(labelResp, &labelJSON); err != nil {
			t.Errorf("problem decoding response (%s): %v\n", string(labelResp), err)
		}
		if labelJSON.Label != mapping[label] {
			t.Errorf("bad response to label query on (%d, %d, %d): %s\n", pt[0], pt[1], pt[2], string(labelResp))
		}
		labelReq = fmt.Sprintf("%snode/%s/labels/label/%d_%d_%d?scale=1&supervoxels=true", server.WebAPIPath, uuid, pt[0], pt[1], pt[2])
		labelResp = server.TestHTTP(t, "GET", labelReq, nil)
		if err := json.Unmarshal(labelResp, &labelJSON); err != nil {
			t.Errorf("problem decoding response (%s): %v\n", string(labelResp), err)
		}
		if labelJSON.Label != label {
			t.Errorf("bad response to label query on (%d, %d, %d): %s\n", pt[0], pt[1], pt[2], string(labelResp))
		}
	}
	for label, pt := range testPoints2 {
		labelReq := fmt.Sprintf("%snode/%s/labels/label/%d_%d_%d?scale=2", server.WebAPIPath, uuid, pt[0], pt[1], pt[2])
		labelResp := server.TestHTTP(t, "GET", labelReq, nil)
		if err := json.Unmarshal(labelResp, &labelJSON); err != nil {
			t.Errorf("problem decoding response (%s): %v\n", string(labelResp), err)
		}
		if labelJSON.Label != mapping[label] {
			t.Errorf("bad response to label query on (%d, %d, %d): %s\n", pt[0], pt[1], pt[2], string(labelResp))
		}
		labelReq = fmt.Sprintf("%snode/%s/labels/label/%d_%d_%d?scale=2&supervoxels=true", server.WebAPIPath, uuid, pt[0], pt[1], pt[2])
		labelResp = server.TestHTTP(t, "GET", labelReq, nil)
		if err := json.Unmarshal(labelResp, &labelJSON); err != nil {
			t.Errorf("problem decoding response (%s): %v\n", string(labelResp), err)
		}
		if labelJSON.Label != label {
			t.Errorf("bad response to label query on (%d, %d, %d): %s\n", pt[0], pt[1], pt[2], string(labelResp))
		}
	}

	// Make sure labels 2 and 13 sparsevol has been removed.
	reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol/2", server.WebAPIPath, uuid)
	server.TestBadHTTP(t, "GET", reqStr, nil)

	reqStr = fmt.Sprintf("%snode/%s/labels/sparsevol/13", server.WebAPIPath, uuid)
	server.TestBadHTTP(t, "GET", reqStr, nil)

	// Make sure label changes are correct after completion of merge
	if err := downres.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on update for labels: %v\n", err)
	}
	retrieved := newTestVolume(128, 128, 128)
	retrieved.get(t, uuid, "labels", false)
	merged := newTestVolume(128, 128, 128)
	merged.addSubvol(dvid.Point3d{40, 40, 40}, dvid.Point3d{40, 40, 40}, 1)
	merged.addSubvol(dvid.Point3d{40, 40, 80}, dvid.Point3d{40, 40, 40}, 1)
	merged.addSubvol(dvid.Point3d{80, 40, 40}, dvid.Point3d{40, 40, 40}, 1)
	merged.addSubvol(dvid.Point3d{40, 80, 40}, dvid.Point3d{40, 40, 40}, 209)
	merged.addSubvol(dvid.Point3d{80, 80, 40}, dvid.Point3d{40, 40, 40}, 311)
	if err := merged.equals(retrieved); err != nil {
		t.Errorf("Merged label volume not equal to expected label volume: %v\n", err)
	}

	retrieved.get(t, uuid, "labels", true) // check supervoxels
	if err := hires.equals(retrieved); err != nil {
		t.Errorf("Merged supervoxel volume not equal to original supervoxel volume: %v\n", err)
	}

	retrieved1 := newTestVolume(64, 64, 64)
	retrieved1.getScale(t, uuid, "labels", 1, false)
	retrieved1.verifyLabel(t, 0, 35, 34, 2)
	merged1 := newTestVolume(64, 64, 64)
	merged1.addSubvol(dvid.Point3d{20, 20, 20}, dvid.Point3d{20, 20, 20}, 1)
	merged1.addSubvol(dvid.Point3d{20, 20, 40}, dvid.Point3d{20, 20, 20}, 1)
	merged1.addSubvol(dvid.Point3d{40, 20, 20}, dvid.Point3d{20, 20, 20}, 1)
	merged1.addSubvol(dvid.Point3d{20, 40, 20}, dvid.Point3d{20, 20, 20}, 209)
	merged1.addSubvol(dvid.Point3d{40, 40, 20}, dvid.Point3d{20, 20, 20}, 311)
	if err := retrieved1.equals(merged1); err != nil {
		t.Errorf("Merged label volume downres #1 not equal to expected merged volume: %v\n", err)
	}

	retrieved1.getScale(t, uuid, "labels", 1, true) // check supervoxels
	if err := downres1.equals(retrieved1); err != nil {
		t.Errorf("Merged supervoxel volume @ downres #1 not equal to original supervoxel volume: %v\n", err)
	}

	retrieved2 := newTestVolume(32, 32, 32)
	retrieved2.getScale(t, uuid, "labels", 2, false)
	merged2 := newTestVolume(32, 32, 32)
	merged2.addSubvol(dvid.Point3d{10, 10, 10}, dvid.Point3d{10, 10, 10}, 1)
	merged2.addSubvol(dvid.Point3d{10, 10, 20}, dvid.Point3d{10, 10, 10}, 1)
	merged2.addSubvol(dvid.Point3d{20, 10, 10}, dvid.Point3d{10, 10, 10}, 1)
	merged2.addSubvol(dvid.Point3d{10, 20, 10}, dvid.Point3d{10, 10, 10}, 209)
	merged2.addSubvol(dvid.Point3d{20, 20, 10}, dvid.Point3d{10, 10, 10}, 311)
	if err := retrieved2.equals(merged2); err != nil {
		t.Errorf("Merged label volume downres #2 not equal to expected merged volume: %v\n", err)
	}

	retrieved2.getScale(t, uuid, "labels", 2, true) // check supervoxels
	if err := downres2.equals(retrieved2); err != nil {
		t.Errorf("Merged supervoxel volume @ downres #2 not equal to original supervoxel volume: %v\n", err)
	}

	// Cleave supervoxel 2 and 13 back out of merge label 1, should be 312.
	reqStr = fmt.Sprintf("%snode/%s/labels/cleave/1", server.WebAPIPath, uuid)
	r = server.TestHTTP(t, "POST", reqStr, bytes.NewBufferString("[2, 13]"))
	var jsonVal struct {
		CleavedLabel uint64
		MutationID   uint64
	}
	if err := json.Unmarshal(r, &jsonVal); err != nil {
		t.Errorf("Unable to get new label from cleave.  Instead got: %v\n", jsonVal)
	}
	if jsonVal.MutationID == 0 {
		t.Errorf("expected Mutation ID from cleave but got zero: %v\n", jsonVal)
	}

	reqStr = fmt.Sprintf("%snode/%s/labels/maxlabel", server.WebAPIPath, uuid)
	jsonStr := server.TestHTTP(t, "GET", reqStr, nil)
	expectedJSON := `{"maxlabel": 312}`
	if string(jsonStr) != expectedJSON {
		t.Errorf("Expected this JSON returned from maxlabel:\n%s\nGot:\n%s\n", expectedJSON, string(jsonStr))
	}

	mapping = map[uint64]uint64{
		1:   1,
		2:   312,
		13:  312,
		209: 209,
		311: 311,
	}
	for label, pt := range testPoints0 {
		labelReq := fmt.Sprintf("%snode/%s/labels/label/%d_%d_%d", server.WebAPIPath, uuid, pt[0], pt[1], pt[2])
		labelResp := server.TestHTTP(t, "GET", labelReq, nil)
		if err := json.Unmarshal(labelResp, &labelJSON); err != nil {
			t.Errorf("problem decoding response (%s): %v\n", string(labelResp), err)
		}
		if labelJSON.Label != mapping[label] {
			t.Errorf("bad response to label query on (%d, %d, %d): %s\n", pt[0], pt[1], pt[2], string(labelResp))
		}
		labelReq = fmt.Sprintf("%snode/%s/labels/label/%d_%d_%d?supervoxels=true", server.WebAPIPath, uuid, pt[0], pt[1], pt[2])
		labelResp = server.TestHTTP(t, "GET", labelReq, nil)
		if err := json.Unmarshal(labelResp, &labelJSON); err != nil {
			t.Errorf("problem decoding response (%s): %v\n", string(labelResp), err)
		}
		if labelJSON.Label != label {
			t.Errorf("bad response to label query on (%d, %d, %d): %s\n", pt[0], pt[1], pt[2], string(labelResp))
		}
	}
	for label, pt := range testPoints1 {
		labelReq := fmt.Sprintf("%snode/%s/labels/label/%d_%d_%d?scale=1", server.WebAPIPath, uuid, pt[0], pt[1], pt[2])
		labelResp := server.TestHTTP(t, "GET", labelReq, nil)
		if err := json.Unmarshal(labelResp, &labelJSON); err != nil {
			t.Errorf("problem decoding response (%s): %v\n", string(labelResp), err)
		}
		if labelJSON.Label != mapping[label] {
			t.Errorf("bad response to label query on (%d, %d, %d): %s\n", pt[0], pt[1], pt[2], string(labelResp))
		}
		labelReq = fmt.Sprintf("%snode/%s/labels/label/%d_%d_%d?scale=1&supervoxels=true", server.WebAPIPath, uuid, pt[0], pt[1], pt[2])
		labelResp = server.TestHTTP(t, "GET", labelReq, nil)
		if err := json.Unmarshal(labelResp, &labelJSON); err != nil {
			t.Errorf("problem decoding response (%s): %v\n", string(labelResp), err)
		}
		if labelJSON.Label != label {
			t.Errorf("bad response to label query on (%d, %d, %d): %s\n", pt[0], pt[1], pt[2], string(labelResp))
		}
	}
	for label, pt := range testPoints2 {
		labelReq := fmt.Sprintf("%snode/%s/labels/label/%d_%d_%d?scale=2", server.WebAPIPath, uuid, pt[0], pt[1], pt[2])
		labelResp := server.TestHTTP(t, "GET", labelReq, nil)
		if err := json.Unmarshal(labelResp, &labelJSON); err != nil {
			t.Errorf("problem decoding response (%s): %v\n", string(labelResp), err)
		}
		if labelJSON.Label != mapping[label] {
			t.Errorf("bad response to label query on (%d, %d, %d): %s\n", pt[0], pt[1], pt[2], string(labelResp))
		}
		labelReq = fmt.Sprintf("%snode/%s/labels/label/%d_%d_%d?scale=2&supervoxels=true", server.WebAPIPath, uuid, pt[0], pt[1], pt[2])
		labelResp = server.TestHTTP(t, "GET", labelReq, nil)
		if err := json.Unmarshal(labelResp, &labelJSON); err != nil {
			t.Errorf("problem decoding response (%s): %v\n", string(labelResp), err)
		}
		if labelJSON.Label != label {
			t.Errorf("bad response to label query on (%d, %d, %d): %s\n", pt[0], pt[1], pt[2], string(labelResp))
		}
	}

	retrieved.get(t, uuid, "labels", false)
	cleaved0 := newTestVolume(128, 128, 128)
	cleaved0.addSubvol(dvid.Point3d{40, 40, 40}, dvid.Point3d{40, 40, 40}, 1)
	cleaved0.addSubvol(dvid.Point3d{40, 40, 80}, dvid.Point3d{40, 40, 40}, 312)
	cleaved0.addSubvol(dvid.Point3d{80, 40, 40}, dvid.Point3d{40, 40, 40}, 312)
	cleaved0.addSubvol(dvid.Point3d{40, 80, 40}, dvid.Point3d{40, 40, 40}, 209)
	cleaved0.addSubvol(dvid.Point3d{80, 80, 40}, dvid.Point3d{40, 40, 40}, 311)
	if err := cleaved0.equals(retrieved); err != nil {
		t.Errorf("Cleaved label volume not equal to expected label volume: %v\n", err)
	}

	retrieved.get(t, uuid, "labels", true) // check supervoxels
	if err := hires.equals(retrieved); err != nil {
		t.Errorf("Cleaved supervoxel volume not equal to original supervoxel volume: %v\n", err)
	}

	retrieved1.getScale(t, uuid, "labels", 1, false)
	cleaved1 := newTestVolume(64, 64, 64)
	cleaved1.addSubvol(dvid.Point3d{20, 20, 20}, dvid.Point3d{20, 20, 20}, 1)
	cleaved1.addSubvol(dvid.Point3d{20, 20, 40}, dvid.Point3d{20, 20, 20}, 312)
	cleaved1.addSubvol(dvid.Point3d{40, 20, 20}, dvid.Point3d{20, 20, 20}, 312)
	cleaved1.addSubvol(dvid.Point3d{20, 40, 20}, dvid.Point3d{20, 20, 20}, 209)
	cleaved1.addSubvol(dvid.Point3d{40, 40, 20}, dvid.Point3d{20, 20, 20}, 311)
	if err := retrieved1.equals(cleaved1); err != nil {
		t.Errorf("Cleaved label volume downres #1 not equal to expected merged volume: %v\n", err)
	}

	retrieved1.getScale(t, uuid, "labels", 1, true) // check supervoxels
	if err := downres1.equals(retrieved1); err != nil {
		t.Errorf("Cleaved supervoxel volume @ downres #1 not equal to original supervoxel volume: %v\n", err)
	}

	retrieved2.getScale(t, uuid, "labels", 2, false)
	cleaved2 := newTestVolume(32, 32, 32)
	cleaved2.addSubvol(dvid.Point3d{10, 10, 10}, dvid.Point3d{10, 10, 10}, 1)
	cleaved2.addSubvol(dvid.Point3d{10, 10, 20}, dvid.Point3d{10, 10, 10}, 312)
	cleaved2.addSubvol(dvid.Point3d{20, 10, 10}, dvid.Point3d{10, 10, 10}, 312)
	cleaved2.addSubvol(dvid.Point3d{10, 20, 10}, dvid.Point3d{10, 10, 10}, 209)
	cleaved2.addSubvol(dvid.Point3d{20, 20, 10}, dvid.Point3d{10, 10, 10}, 311)
	if err := retrieved2.equals(cleaved2); err != nil {
		t.Errorf("Cleaved label volume downres #2 not equal to expected merged volume: %v\n", err)
	}

	retrieved2.getScale(t, uuid, "labels", 2, true) // check supervoxels
	if err := downres2.equals(retrieved2); err != nil {
		t.Errorf("Cleaved supervoxel volume @ downres #2 not equal to original supervoxel volume: %v\n", err)
	}

}

// Test that mutable labelmap POST will accurately remove prior bodies if we overwrite
// supervoxels entirely.
func TestMutableLabelblkPOST(t *testing.T) {
	testConfig := server.TestConfig{CacheSize: map[string]int{"labelmap": 10}}
	// var testConfig server.TestConfig
	if err := server.OpenTest(testConfig); err != nil {
		t.Fatalf("can't open test server: %v\n", err)
	}
	defer server.CloseTest()

	// Create testbed volume and data instances
	uuid, _ := initTestRepo()
	var config dvid.Config
	server.CreateTestInstance(t, uuid, "labelmap", "labels", config)

	// Post labels 1-4
	createLabelTestVolume(t, uuid, "labels")

	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on sync of labels: %v\n", err)
	}

	// Make sure we have labels 1-4 sparsevol
	for _, label := range []uint64{1, 2, 3, 4} {
		// Check fast HEAD requests
		reqStr := fmt.Sprintf("%snode/%s/labels/sparsevol/%d", server.WebAPIPath, uuid, label)
		resp := server.TestHTTPResponse(t, "HEAD", reqStr, nil)
		if resp.Code != http.StatusOK {
			t.Errorf("HEAD on %s did not return OK.  Status = %d\n", reqStr, resp.Code)
		}

		// Check full sparse volumes
		encoding := server.TestHTTP(t, "GET", reqStr, nil)
		bodies[label-1].checkSparseVol(t, encoding, dvid.OptionalBounds{})
	}

	// Post labels 6-7 that overwrite all labels 1-4.
	createLabelTest2Volume(t, uuid, "labels")

	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on sync of labels: %v\n", err)
	}

	// Make sure that labels 1-4 have no more sparse vol.
	for _, label := range []uint64{1, 2, 3, 4} {
		// Check full sparse volumes aren't retrievable anymore
		reqStr := fmt.Sprintf("%snode/%s/labels/sparsevol/%d", server.WebAPIPath, uuid, label)
		server.TestBadHTTP(t, "GET", reqStr, nil)

		// Make sure non-existent bodies return proper HEAD responses.
		resp := server.TestHTTPResponse(t, "HEAD", reqStr, nil)
		if resp.Code != http.StatusNoContent {
			t.Errorf("HEAD on %s did not return 204 (No Content).  Status = %d\n", reqStr, resp.Code)
		}
	}

	// Make sure labels 6-7 are available as sparse vol.
	for _, label := range []uint64{6, 7} {
		// Check fast HEAD requests
		reqStr := fmt.Sprintf("%snode/%s/labels/sparsevol/%d", server.WebAPIPath, uuid, label)
		resp := server.TestHTTPResponse(t, "HEAD", reqStr, nil)
		if resp.Code != http.StatusOK {
			t.Errorf("HEAD on %s did not return OK.  Status = %d\n", reqStr, resp.Code)
		}

		// Check full sparse volumes
		encoding := server.TestHTTP(t, "GET", reqStr, nil)
		bodies[label-1].checkSparseVol(t, encoding, dvid.OptionalBounds{})
	}
}

func TestConcurrentMutations(t *testing.T) {
	testConfig := server.TestConfig{CacheSize: map[string]int{"labelmap": 10}}
	// var testConfig server.TestConfig
	if err := server.OpenTest(testConfig); err != nil {
		t.Fatalf("can't open test server: %v\n", err)
	}
	defer server.CloseTest()

	// Create testbed volume and data instances
	uuid, _ := initTestRepo()
	var config dvid.Config // use native 64^3 blocks
	server.CreateTestInstance(t, uuid, "labelmap", "labels", config)

	// Make 12 parallel bodies and do merge/split on 3 groups.
	tbodies := make([]testBody, 12)
	for i := 0; i < 12; i++ {
		z := int32(32 + 4*i)
		blockz := z / 64
		tbodies[i] = testBody{ // 72 x 4 x 4 horizontal bar
			label:  uint64(i + 1),
			offset: dvid.Point3d{9, 68, z},
			size:   dvid.Point3d{72, 4, 4},
			blockSpans: []dvid.Span{
				{blockz, 1, 0, 1},
			},
			voxelSpans: []dvid.Span{
				{z, 68, 9, 80},
				{z, 69, 9, 80},
				{z, 70, 9, 80},
				{z, 71, 9, 80},
				{z + 1, 68, 9, 80},
				{z + 1, 69, 9, 80},
				{z + 1, 70, 9, 80},
				{z + 1, 71, 9, 80},
				{z + 2, 68, 9, 80},
				{z + 2, 69, 9, 80},
				{z + 2, 70, 9, 80},
				{z + 2, 71, 9, 80},
				{z + 3, 68, 9, 80},
				{z + 3, 69, 9, 80},
				{z + 3, 70, 9, 80},
				{z + 3, 71, 9, 80},
			},
		}
	}

	tvol := newTestVolume(192, 128, 128)
	for i := 0; i < 12; i++ {
		tvol.addBody(tbodies[i], uint64(i+1))
	}
	tvol.put(t, uuid, "labels")

	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on sync of labels: %v\n", err)
	}

	retrieved := newTestVolume(192, 128, 128)
	retrieved.get(t, uuid, "labels", false)
	if len(retrieved.data) != 8*192*128*128 {
		t.Errorf("Retrieved labelvol volume is incorrect size\n")
	}
	if err := retrieved.equals(tvol); err != nil {
		t.Errorf("Initial put not working: %v\n", err)
	}

	// Run concurrent cleave/merge ops on labels 1-4, 5-8, and 9-12.
	expectedMapping1 := make(map[uint64]uint64)
	expectedMapping2 := make(map[uint64]uint64)
	expectedMapping3 := make(map[uint64]uint64)
	wg := new(sync.WaitGroup)
	wg.Add(3)
	go func() {
		var err error
		for n := 0; n < 50; n++ {
			if err = mergeCleave(t, uuid, "labels", tbodies[0:4], 1, expectedMapping1); err != nil {
				break
			}
		}
		wg.Done()
		if err != nil {
			t.Error(err)
		}
	}()
	go func() {
		var err error
		for n := 0; n < 50; n++ {
			if err = mergeCleave(t, uuid, "labels", tbodies[4:8], 2, expectedMapping2); err != nil {
				break
			}
		}
		wg.Done()
		if err != nil {
			t.Error(err)
		}
	}()
	go func() {
		var err error
		for n := 0; n < 50; n++ {
			if err = mergeCleave(t, uuid, "labels", tbodies[8:12], 3, expectedMapping3); err != nil {
				break
			}
		}
		wg.Done()
		if err != nil {
			t.Error(err)
		}
	}()
	wg.Wait()

	retrieved2 := newTestVolume(192, 128, 128)
	retrieved2.get(t, uuid, "labels", false)
	if len(retrieved2.data) != 8*192*128*128 {
		t.Errorf("Retrieved labelvol volume is incorrect size\n")
	}
	for i := 0; i < 4; i++ {
		tvol.addBody(tbodies[i], expectedMapping1[uint64(i+1)])
	}
	for i := 4; i < 8; i++ {
		tvol.addBody(tbodies[i], expectedMapping2[uint64(i+1)])
	}
	for i := 8; i < 12; i++ {
		tvol.addBody(tbodies[i], expectedMapping3[uint64(i+1)])
	}
	if err := retrieved2.equals(tvol); err != nil {
		t.Errorf("Concurrent split/merge producing bad result: %v\n", err)
	}

	// get reverse mapping of new bodies to supervoxel: should be 1 to 1 since cleaves are last ops.
	reverse := make(map[uint64]uint64, 12)
	for i := uint64(1); i <= 4; i++ {
		label, found := expectedMapping1[i]
		if !found {
			t.Errorf("unlikely that no mapping found for supervoxel %d!\n", i)
			label = i
		}
		reverse[label] = i
	}
	for i := uint64(5); i <= 8; i++ {
		label, found := expectedMapping2[i]
		if !found {
			t.Errorf("unlikely that no mapping found for supervoxel %d!\n", i)
			label = i
		}
		reverse[label] = i
	}
	for i := uint64(9); i <= 12; i++ {
		label, found := expectedMapping3[i]
		if !found {
			t.Errorf("unlikely that no mapping found for supervoxel %d!\n", i)
			label = i
		}
		reverse[label] = i
	}

	reqStr := fmt.Sprintf("%snode/%s/labels/sparsevols-coarse/1/3000", server.WebAPIPath, uuid)
	encoding := server.TestHTTP(t, "GET", reqStr, nil)
	var i int
	for labelNum := 1; labelNum <= 12; labelNum++ {
		if i+28 > len(encoding) {
			t.Fatalf("Expected label #%d but only %d bytes remain in encoding\n", labelNum, len(encoding[i:]))
		}
		label := binary.LittleEndian.Uint64(encoding[i : i+8])
		i += 8
		var spans dvid.Spans
		if err := spans.UnmarshalBinary(encoding[i:]); err != nil {
			t.Errorf("Error in decoding coarse sparse volume: %v\n", err)
			return
		}
		i += 4 + len(spans)*16
		supervoxel, found := reverse[label]
		if !found {
			t.Fatalf("Got sparsevol for label %d, yet none of the supervoxels were mapped to it!\n", label)
		}
		b := tbodies[supervoxel-1]
		if !reflect.DeepEqual(spans, b.blockSpans) {
			t.Errorf("Expected coarse spans for supervoxel %d:\n%s\nGot spans:\n%s\n", b.label, b.blockSpans, spans)
		}
	}
}

// merge a subset of bodies, then cleave each of them back out.
func mergeCleave(t *testing.T, uuid dvid.UUID, name dvid.InstanceName, tbodies []testBody, thread int, mapping map[uint64]uint64) error {
	label1 := tbodies[0].label
	label4 := tbodies[3].label
	target := label1 + uint64(rand.Int()%4)

	labelset := make(labels.Set)
	for i := label1; i <= label4; i++ {
		if i != target {
			labelset[i] = struct{}{}
		}
	}

	mapped, found := mapping[target]
	if found {
		target = mapped
	}
	var s []string
	for label := range labelset {
		mapped, found = mapping[label]
		if found {
			label = mapped
		}
		s = append(s, fmt.Sprintf("%d", label))
	}
	mergeStr := "[" + fmt.Sprintf("%d", target) + ", " + strings.Join(s, ",") + "]"
	testMerge := mergeJSON(mergeStr)
	if err := testMerge.sendErr(t, uuid, "labels"); err != nil {
		return err
	}

	for label := range labelset {
		reqStr := fmt.Sprintf("%snode/%s/labels/cleave/%d", server.WebAPIPath, uuid, target)
		cleaveStr := fmt.Sprintf("[%d]", label)
		r, err := server.TestHTTPError(t, "POST", reqStr, bytes.NewBufferString(cleaveStr))
		if err != nil {
			return err
		}
		var jsonVal struct {
			CleavedLabel uint64
		}
		if err := json.Unmarshal(r, &jsonVal); err != nil {
			return fmt.Errorf("unable to get new label from cleave.  Instead got: %v", jsonVal)
		}
		mapping[label] = jsonVal.CleavedLabel

		// make sure old label doesn't have these supervoxels anymore.
		reqStr = fmt.Sprintf("%snode/%s/labels/supervoxels/%d", server.WebAPIPath, uuid, target)
		r, err = server.TestHTTPError(t, "GET", reqStr, nil)
		if err != nil {
			return err
		}
		var supervoxels []uint64
		if err := json.Unmarshal(r, &supervoxels); err != nil {
			return fmt.Errorf("unable to get supervoxels after cleave: %v", err)
		}
		for _, supervoxel := range supervoxels {
			if supervoxel == label {
				return fmt.Errorf("supervoxel %d was supposedly cleaved but still remains in label %d index", label, target)
			}
		}

		// make sure cleaved body has just this supervoxel.
		reqStr = fmt.Sprintf("%snode/%s/labels/supervoxels/%d", server.WebAPIPath, uuid, jsonVal.CleavedLabel)
		r, err = server.TestHTTPError(t, "GET", reqStr, nil)
		if err != nil {
			return err
		}
		if err := json.Unmarshal(r, &supervoxels); err != nil {
			return fmt.Errorf("unable to get supervoxels for cleaved body %d after cleave: %v", jsonVal.CleavedLabel, err)
		}
		if len(supervoxels) != 1 {
			return fmt.Errorf("expected only 1 supervoxel (%d) to remain from cleave of %d into %d.  have: %v", label, target, jsonVal.CleavedLabel, supervoxels)
		}
		if supervoxels[0] != label {
			return fmt.Errorf("expected only supervoxel in cleaved body %d to be %d, got %d", jsonVal.CleavedLabel, label, supervoxels[0])
		}
	}
	return nil
}

// Test concurrent POST blocks and then extents that should have data-wide mutex so no
// overwriting of extents.
func TestPostBlocksExtents(t *testing.T) {
	numTests := 3
	for i := 0; i < numTests; i++ {
		runTestBlocksExtents(t, i)
	}
}

func runTestBlocksExtents(t *testing.T, run int) {
	if err := server.OpenTest(); err != nil {
		t.Fatalf("can't open test server: %v\n", err)
	}
	defer server.CloseTest()

	uuid, _ := datastore.NewTestRepo()
	if len(uuid) < 5 {
		t.Fatalf("Bad root UUID for new repo: %s\n", uuid)
	}
	server.CreateTestInstance(t, uuid, "labelmap", "labels", dvid.Config{})

	data := loadTestData(t, testFiles[0])
	gzippedData, err := data.b.CompressGZIP()
	if err != nil {
		t.Fatalf("unable to gzip compress block: %v\n", err)
	}

	apiStr := fmt.Sprintf("%snode/%s/labels/blocks", server.WebAPIPath, uuid)
	sz := 128
	span := int32(sz / 64)
	wg := new(sync.WaitGroup)
	wg.Add(int(span * span * span))
	for z := int32(0); z < span; z++ {
		for y := int32(0); y < span; y++ {
			for x := int32(0); x < span; x++ {
				go writeConcurrentBlock(t, wg, apiStr, x, y, z, gzippedData)
			}
		}
	}
	wg.Wait()
	if err := datastore.BlockOnUpdating(uuid, "labels"); err != nil {
		t.Fatalf("Error blocking on sync of labels: %v\n", err)
	}

	// check extents...
	apiStr = fmt.Sprintf("%snode/%s/labels/info", server.WebAPIPath, uuid)
	r := server.TestHTTP(t, "GET", apiStr, nil)
	jsonResp := make(map[string]map[string]interface{})
	if err := json.Unmarshal(r, &jsonResp); err != nil {
		t.Fatalf("Unable to unmarshal labels/info response: %v\n", r)
	}
	extJSON, found := jsonResp["Extended"]
	if !found {
		t.Fatalf("No Extended property in labels/info response: %v\n", jsonResp)
	}
	val, found := extJSON["MinPoint"]
	if !found {
		t.Fatalf("No MinPoint property in labels/info response: %v\n", extJSON)
	}
	minPoint := val.([]interface{})
	for i, pt := range minPoint {
		coord := pt.(float64)
		if coord != 0 {
			t.Fatalf("Bad min coord at position %d in run %d: %v\n", i, run, val)
		}
	}
	val, found = extJSON["MaxPoint"]
	if !found {
		t.Fatalf("No MaxPoint property in labels/info response: %v\n", extJSON)
	}
	maxPoint := val.([]interface{})
	for i, pt := range maxPoint {
		coord := pt.(float64)
		if coord != 127 {
			t.Fatalf("Bad max coord at position %d in run %d: %v\n", i, run, val)
		}
	}
}

func writeConcurrentBlock(t *testing.T, wg *sync.WaitGroup, apiStr string, x, y, z int32, gzippedData []byte) {
	if x == 0 && y == 0 && z == 0 { // randomly pause this block to see if extents correct
		t := time.Duration(rand.Int63() % 100)
		time.Sleep(t * time.Millisecond)
	}
	var buf bytes.Buffer
	writeTestInt32(t, &buf, x)
	writeTestInt32(t, &buf, y)
	writeTestInt32(t, &buf, z)
	writeTestInt32(t, &buf, int32(len(gzippedData)))
	n, err := buf.Write(gzippedData)
	if err != nil {
		t.Fatalf("unable to write gzip block: %v\n", err)
	}
	if n != len(gzippedData) {
		t.Fatalf("unable to write %d bytes to buffer, only wrote %d bytes\n", len(gzippedData), n)
	}
	server.TestHTTP(t, "POST", apiStr, &buf)
	wg.Done()
}

var (
	body1 = testBody{
		label:  1,
		offset: dvid.Point3d{10, 40, 10},
		size:   dvid.Point3d{20, 20, 80},
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			{60, 50, 10, 29}, {60, 51, 10, 29}, {60, 52, 10, 29}, {60, 53, 10, 29}, {60, 54, 10, 29},
			{60, 55, 10, 29}, {60, 56, 10, 29}, {60, 57, 10, 29}, {60, 58, 10, 29}, {60, 59, 10, 29},
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			{61, 50, 10, 29}, {61, 51, 10, 29}, {61, 52, 10, 29}, {61, 53, 10, 29}, {61, 54, 10, 29},
			{61, 55, 10, 29}, {61, 56, 10, 29}, {61, 57, 10, 29}, {61, 58, 10, 29}, {61, 59, 10, 29},
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			{62, 45, 10, 29}, {62, 46, 10, 29}, {62, 47, 10, 29}, {62, 48, 10, 29}, {62, 49, 10, 29},
			{62, 50, 10, 29}, {62, 51, 10, 29}, {62, 52, 10, 29}, {62, 53, 10, 29}, {62, 54, 10, 29},
			{62, 55, 10, 29}, {62, 56, 10, 29}, {62, 57, 10, 29}, {62, 58, 10, 29}, {62, 59, 10, 29},
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			{63, 45, 10, 29}, {63, 46, 10, 29}, {63, 47, 10, 29}, {63, 48, 10, 29}, {63, 49, 10, 29},
			{63, 50, 10, 29}, {63, 51, 10, 29}, {63, 52, 10, 29}, {63, 53, 10, 29}, {63, 54, 10, 29},
			{63, 55, 10, 29}, {63, 56, 10, 29}, {63, 57, 10, 29}, {63, 58, 10, 29}, {63, 59, 10, 29},
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			{64, 50, 10, 29}, {64, 51, 10, 29}, {64, 52, 10, 29}, {64, 53, 10, 29}, {64, 54, 10, 29},
			{64, 55, 10, 29}, {64, 56, 10, 29}, {64, 57, 10, 29}, {64, 58, 10, 29}, {64, 59, 10, 29},
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			{65, 45, 10, 29}, {65, 46, 10, 29}, {65, 47, 10, 29}, {65, 48, 10, 29}, {65, 49, 10, 29},
			{65, 50, 10, 29}, {65, 51, 10, 29}, {65, 52, 10, 29}, {65, 53, 10, 29}, {65, 54, 10, 29},
			{65, 55, 10, 29}, {65, 56, 10, 29}, {65, 57, 10, 29}, {65, 58, 10, 29}, {65, 59, 10, 29},
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			{66, 50, 10, 29}, {66, 51, 10, 29}, {66, 52, 10, 29}, {66, 53, 10, 29}, {66, 54, 10, 29},
			{66, 55, 10, 29}, {66, 56, 10, 29}, {66, 57, 10, 29}, {66, 58, 10, 29}, {66, 59, 10, 29},
			{67, 40, 10, 29}, {67, 41, 10, 29}, {67, 42, 10, 29}, {67, 43, 10, 29}, {67, 44, 10, 29},
			{67, 45, 10, 29}, {67, 46, 10, 29}, {67, 47, 10, 29}, {67, 48, 10, 29}, {67, 49, 10, 29},
			{67, 50, 10, 29}, {67, 51, 10, 29}, {67, 52, 10, 29}, {67, 53, 10, 29}, {67, 54, 10, 29},
			{67, 55, 10, 29}, {67, 56, 10, 29}, {67, 57, 10, 29}, {67, 58, 10, 29}, {67, 59, 10, 29},
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			{68, 45, 10, 29}, {68, 46, 10, 29}, {68, 47, 10, 29}, {68, 48, 10, 29}, {68, 49, 10, 29},
			{68, 50, 10, 29}, {68, 51, 10, 29}, {68, 52, 10, 29}, {68, 53, 10, 29}, {68, 54, 10, 29},
			{68, 55, 10, 29}, {68, 56, 10, 29}, {68, 57, 10, 29}, {68, 58, 10, 29}, {68, 59, 10, 29},
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			{69, 45, 10, 29}, {69, 46, 10, 29}, {69, 47, 10, 29}, {69, 48, 10, 29}, {69, 49, 10, 29},
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			{70, 55, 10, 29}, {70, 56, 10, 29}, {70, 57, 10, 29}, {70, 58, 10, 29}, {70, 59, 10, 29},
			{71, 40, 10, 29}, {71, 41, 10, 29}, {71, 42, 10, 29}, {71, 43, 10, 29}, {71, 44, 10, 29},
			{71, 45, 10, 29}, {71, 46, 10, 29}, {71, 47, 10, 29}, {71, 48, 10, 29}, {71, 49, 10, 29},
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			{72, 40, 10, 29}, {72, 41, 10, 29}, {72, 42, 10, 29}, {72, 43, 10, 29}, {72, 44, 10, 29},
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			{72, 50, 10, 29}, {72, 51, 10, 29}, {72, 52, 10, 29}, {72, 53, 10, 29}, {72, 54, 10, 29},
			{72, 55, 10, 29}, {72, 56, 10, 29}, {72, 57, 10, 29}, {72, 58, 10, 29}, {72, 59, 10, 29},
			{73, 40, 10, 29}, {73, 41, 10, 29}, {73, 42, 10, 29}, {73, 43, 10, 29}, {73, 44, 10, 29},
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			{73, 50, 10, 29}, {73, 51, 10, 29}, {73, 52, 10, 29}, {73, 53, 10, 29}, {73, 54, 10, 29},
			{73, 55, 10, 29}, {73, 56, 10, 29}, {73, 57, 10, 29}, {73, 58, 10, 29}, {73, 59, 10, 29},
			{74, 40, 10, 29}, {74, 41, 10, 29}, {74, 42, 10, 29}, {74, 43, 10, 29}, {74, 44, 10, 29},
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			{74, 55, 10, 29}, {74, 56, 10, 29}, {74, 57, 10, 29}, {74, 58, 10, 29}, {74, 59, 10, 29},
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			{75, 50, 10, 29}, {75, 51, 10, 29}, {75, 52, 10, 29}, {75, 53, 10, 29}, {75, 54, 10, 29},
			{75, 55, 10, 29}, {75, 56, 10, 29}, {75, 57, 10, 29}, {75, 58, 10, 29}, {75, 59, 10, 29},
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			{76, 55, 10, 29}, {76, 56, 10, 29}, {76, 57, 10, 29}, {76, 58, 10, 29}, {76, 59, 10, 29},
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			{77, 55, 10, 29}, {77, 56, 10, 29}, {77, 57, 10, 29}, {77, 58, 10, 29}, {77, 59, 10, 29},
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			{78, 45, 10, 29}, {78, 46, 10, 29}, {78, 47, 10, 29}, {78, 48, 10, 29}, {78, 49, 10, 29},
			{78, 50, 10, 29}, {78, 51, 10, 29}, {78, 52, 10, 29}, {78, 53, 10, 29}, {78, 54, 10, 29},
			{78, 55, 10, 29}, {78, 56, 10, 29}, {78, 57, 10, 29}, {78, 58, 10, 29}, {78, 59, 10, 29},
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			{79, 45, 10, 29}, {79, 46, 10, 29}, {79, 47, 10, 29}, {79, 48, 10, 29}, {79, 49, 10, 29},
			{79, 50, 10, 29}, {79, 51, 10, 29}, {79, 52, 10, 29}, {79, 53, 10, 29}, {79, 54, 10, 29},
			{79, 55, 10, 29}, {79, 56, 10, 29}, {79, 57, 10, 29}, {79, 58, 10, 29}, {79, 59, 10, 29},
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			{80, 55, 10, 29}, {80, 56, 10, 29}, {80, 57, 10, 29}, {80, 58, 10, 29}, {80, 59, 10, 29},
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			{82, 45, 10, 29}, {82, 46, 10, 29}, {82, 47, 10, 29}, {82, 48, 10, 29}, {82, 49, 10, 29},
			{82, 50, 10, 29}, {82, 51, 10, 29}, {82, 52, 10, 29}, {82, 53, 10, 29}, {82, 54, 10, 29},
			{82, 55, 10, 29}, {82, 56, 10, 29}, {82, 57, 10, 29}, {82, 58, 10, 29}, {82, 59, 10, 29},
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			{83, 50, 10, 29}, {83, 51, 10, 29}, {83, 52, 10, 29}, {83, 53, 10, 29}, {83, 54, 10, 29},
			{83, 55, 10, 29}, {83, 56, 10, 29}, {83, 57, 10, 29}, {83, 58, 10, 29}, {83, 59, 10, 29},
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			{84, 55, 10, 29}, {84, 56, 10, 29}, {84, 57, 10, 29}, {84, 58, 10, 29}, {84, 59, 10, 29},
			{85, 40, 10, 29}, {85, 41, 10, 29}, {85, 42, 10, 29}, {85, 43, 10, 29}, {85, 44, 10, 29},
			{85, 45, 10, 29}, {85, 46, 10, 29}, {85, 47, 10, 29}, {85, 48, 10, 29}, {85, 49, 10, 29},
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			{85, 55, 10, 29}, {85, 56, 10, 29}, {85, 57, 10, 29}, {85, 58, 10, 29}, {85, 59, 10, 29},
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			{86, 45, 10, 29}, {86, 46, 10, 29}, {86, 47, 10, 29}, {86, 48, 10, 29}, {86, 49, 10, 29},
			{86, 50, 10, 29}, {86, 51, 10, 29}, {86, 52, 10, 29}, {86, 53, 10, 29}, {86, 54, 10, 29},
			{86, 55, 10, 29}, {86, 56, 10, 29}, {86, 57, 10, 29}, {86, 58, 10, 29}, {86, 59, 10, 29},
			{87, 40, 10, 29}, {87, 41, 10, 29}, {87, 42, 10, 29}, {87, 43, 10, 29}, {87, 44, 10, 29},
			{87, 45, 10, 29}, {87, 46, 10, 29}, {87, 47, 10, 29}, {87, 48, 10, 29}, {87, 49, 10, 29},
			{87, 50, 10, 29}, {87, 51, 10, 29}, {87, 52, 10, 29}, {87, 53, 10, 29}, {87, 54, 10, 29},
			{87, 55, 10, 29}, {87, 56, 10, 29}, {87, 57, 10, 29}, {87, 58, 10, 29}, {87, 59, 10, 29},
			{88, 40, 10, 29}, {88, 41, 10, 29}, {88, 42, 10, 29}, {88, 43, 10, 29}, {88, 44, 10, 29},
			{88, 45, 10, 29}, {88, 46, 10, 29}, {88, 47, 10, 29}, {88, 48, 10, 29}, {88, 49, 10, 29},
			{88, 50, 10, 29}, {88, 51, 10, 29}, {88, 52, 10, 29}, {88, 53, 10, 29}, {88, 54, 10, 29},
			{88, 55, 10, 29}, {88, 56, 10, 29}, {88, 57, 10, 29}, {88, 58, 10, 29}, {88, 59, 10, 29},
			{89, 40, 10, 29}, {89, 41, 10, 29}, {89, 42, 10, 29}, {89, 43, 10, 29}, {89, 44, 10, 29},
			{89, 45, 10, 29}, {89, 46, 10, 29}, {89, 47, 10, 29}, {89, 48, 10, 29}, {89, 49, 10, 29},
			{89, 50, 10, 29}, {89, 51, 10, 29}, {89, 52, 10, 29}, {89, 53, 10, 29}, {89, 54, 10, 29},
			{89, 55, 10, 29}, {89, 56, 10, 29}, {89, 57, 10, 29}, {89, 58, 10, 29}, {89, 59, 10, 29},
		},
	}
	body2 = testBody{
		label:  2,
		offset: dvid.Point3d{30, 20, 40},
		size:   dvid.Point3d{50, 50, 20},
		blockSpans: []dvid.Span{
			{1, 0, 0, 2},
			{1, 1, 0, 2},
			{1, 2, 0, 2},
		},
		voxelSpans: []dvid.Span{
			{40, 20, 30, 31}, {40, 21, 30, 31}, {40, 22, 30, 31}, {40, 23, 30, 31}, {40, 24, 30, 31},
			{40, 25, 30, 31}, {40, 26, 30, 31}, {40, 27, 30, 31}, {40, 28, 30, 31}, {40, 29, 30, 31},
			{40, 30, 30, 31}, {40, 31, 30, 31}, {41, 20, 30, 31}, {41, 21, 30, 31}, {41, 22, 30, 31},
			{41, 23, 30, 31}, {41, 24, 30, 31}, {41, 25, 30, 31}, {41, 26, 30, 31}, {41, 27, 30, 31},
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			{42, 21, 30, 31}, {42, 22, 30, 31}, {42, 23, 30, 31}, {42, 24, 30, 31}, {42, 25, 30, 31},
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			{55, 57, 64, 79}, {55, 58, 64, 79}, {55, 59, 64, 79}, {55, 60, 64, 79}, {55, 61, 64, 79},
			{55, 62, 64, 79}, {55, 63, 64, 79}, {56, 32, 64, 79}, {56, 33, 64, 79}, {56, 34, 64, 79},
			{56, 35, 64, 79}, {56, 36, 64, 79}, {56, 37, 64, 79}, {56, 38, 64, 79}, {56, 39, 64, 79},
			{56, 40, 64, 79}, {56, 41, 64, 79}, {56, 42, 64, 79}, {56, 43, 64, 79}, {56, 44, 64, 79},
			{56, 45, 64, 79}, {56, 46, 64, 79}, {56, 47, 64, 79}, {56, 48, 64, 79}, {56, 49, 64, 79},
			{56, 50, 64, 79}, {56, 51, 64, 79}, {56, 52, 64, 79}, {56, 53, 64, 79}, {56, 54, 64, 79},
			{56, 55, 64, 79}, {56, 56, 64, 79}, {56, 57, 64, 79}, {56, 58, 64, 79}, {56, 59, 64, 79},
			{56, 60, 64, 79}, {56, 61, 64, 79}, {56, 62, 64, 79}, {56, 63, 64, 79}, {57, 32, 64, 79},
			{57, 33, 64, 79}, {57, 34, 64, 79}, {57, 35, 64, 79}, {57, 36, 64, 79}, {57, 37, 64, 79},
			{57, 38, 64, 79}, {57, 39, 64, 79}, {57, 40, 64, 79}, {57, 41, 64, 79}, {57, 42, 64, 79},
			{57, 43, 64, 79}, {57, 44, 64, 79}, {57, 45, 64, 79}, {57, 46, 64, 79}, {57, 47, 64, 79},
			{57, 48, 64, 79}, {57, 49, 64, 79}, {57, 50, 64, 79}, {57, 51, 64, 79}, {57, 52, 64, 79},
			{57, 53, 64, 79}, {57, 54, 64, 79}, {57, 55, 64, 79}, {57, 56, 64, 79}, {57, 57, 64, 79},
			{57, 58, 64, 79}, {57, 59, 64, 79}, {57, 60, 64, 79}, {57, 61, 64, 79}, {57, 62, 64, 79},
			{57, 63, 64, 79}, {58, 32, 64, 79}, {58, 33, 64, 79}, {58, 34, 64, 79}, {58, 35, 64, 79},
			{58, 36, 64, 79}, {58, 37, 64, 79}, {58, 38, 64, 79}, {58, 39, 64, 79}, {58, 40, 64, 79},
			{58, 41, 64, 79}, {58, 42, 64, 79}, {58, 43, 64, 79}, {58, 44, 64, 79}, {58, 45, 64, 79},
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			{58, 51, 64, 79}, {58, 52, 64, 79}, {58, 53, 64, 79}, {58, 54, 64, 79}, {58, 55, 64, 79},
			{58, 56, 64, 79}, {58, 57, 64, 79}, {58, 58, 64, 79}, {58, 59, 64, 79}, {58, 60, 64, 79},
			{58, 61, 64, 79}, {58, 62, 64, 79}, {58, 63, 64, 79}, {59, 32, 64, 79}, {59, 33, 64, 79},
			{59, 34, 64, 79}, {59, 35, 64, 79}, {59, 36, 64, 79}, {59, 37, 64, 79}, {59, 38, 64, 79},
			{59, 39, 64, 79}, {59, 40, 64, 79}, {59, 41, 64, 79}, {59, 42, 64, 79}, {59, 43, 64, 79},
			{59, 44, 64, 79}, {59, 45, 64, 79}, {59, 46, 64, 79}, {59, 47, 64, 79}, {59, 48, 64, 79},
			{59, 49, 64, 79}, {59, 50, 64, 79}, {59, 51, 64, 79}, {59, 52, 64, 79}, {59, 53, 64, 79},
			{59, 54, 64, 79}, {59, 55, 64, 79}, {59, 56, 64, 79}, {59, 57, 64, 79}, {59, 58, 64, 79},
			{59, 59, 64, 79}, {59, 60, 64, 79}, {59, 61, 64, 79}, {59, 62, 64, 79}, {59, 63, 64, 79},
			{40, 64, 30, 31}, {40, 65, 30, 31}, {40, 66, 30, 31}, {40, 67, 30, 31}, {40, 68, 30, 31},
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			{41, 68, 30, 31}, {41, 69, 30, 31}, {42, 64, 30, 31}, {42, 65, 30, 31}, {42, 66, 30, 31},
			{42, 67, 30, 31}, {42, 68, 30, 31}, {42, 69, 30, 31}, {43, 64, 30, 31}, {43, 65, 30, 31},
			{43, 66, 30, 31}, {43, 67, 30, 31}, {43, 68, 30, 31}, {43, 69, 30, 31}, {44, 64, 30, 31},
			{44, 65, 30, 31}, {44, 66, 30, 31}, {44, 67, 30, 31}, {44, 68, 30, 31}, {44, 69, 30, 31},
			{45, 64, 30, 31}, {45, 65, 30, 31}, {45, 66, 30, 31}, {45, 67, 30, 31}, {45, 68, 30, 31},
			{45, 69, 30, 31}, {46, 64, 30, 31}, {46, 65, 30, 31}, {46, 66, 30, 31}, {46, 67, 30, 31},
			{46, 68, 30, 31}, {46, 69, 30, 31}, {47, 64, 30, 31}, {47, 65, 30, 31}, {47, 66, 30, 31},
			{47, 67, 30, 31}, {47, 68, 30, 31}, {47, 69, 30, 31}, {48, 64, 30, 31}, {48, 65, 30, 31},
			{48, 66, 30, 31}, {48, 67, 30, 31}, {48, 68, 30, 31}, {48, 69, 30, 31}, {49, 64, 30, 31},
			{49, 65, 30, 31}, {49, 66, 30, 31}, {49, 67, 30, 31}, {49, 68, 30, 31}, {49, 69, 30, 31},
			{50, 64, 30, 31}, {50, 65, 30, 31}, {50, 66, 30, 31}, {50, 67, 30, 31}, {50, 68, 30, 31},
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			{51, 68, 30, 31}, {51, 69, 30, 31}, {52, 64, 30, 31}, {52, 65, 30, 31}, {52, 66, 30, 31},
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			{55, 64, 30, 31}, {55, 65, 30, 31}, {55, 66, 30, 31}, {55, 67, 30, 31}, {55, 68, 30, 31},
			{55, 69, 30, 31}, {56, 64, 30, 31}, {56, 65, 30, 31}, {56, 66, 30, 31}, {56, 67, 30, 31},
			{56, 68, 30, 31}, {56, 69, 30, 31}, {57, 64, 30, 31}, {57, 65, 30, 31}, {57, 66, 30, 31},
			{57, 67, 30, 31}, {57, 68, 30, 31}, {57, 69, 30, 31}, {58, 64, 30, 31}, {58, 65, 30, 31},
			{58, 66, 30, 31}, {58, 67, 30, 31}, {58, 68, 30, 31}, {58, 69, 30, 31}, {59, 64, 30, 31},
			{59, 65, 30, 31}, {59, 66, 30, 31}, {59, 67, 30, 31}, {59, 68, 30, 31}, {59, 69, 30, 31},
			{40, 64, 32, 63}, {40, 65, 32, 63}, {40, 66, 32, 63}, {40, 67, 32, 63}, {40, 68, 32, 63},
			{40, 69, 32, 63}, {41, 64, 32, 63}, {41, 65, 32, 63}, {41, 66, 32, 63}, {41, 67, 32, 63},
			{41, 68, 32, 63}, {41, 69, 32, 63}, {42, 64, 32, 63}, {42, 65, 32, 63}, {42, 66, 32, 63},
			{42, 67, 32, 63}, {42, 68, 32, 63}, {42, 69, 32, 63}, {43, 64, 32, 63}, {43, 65, 32, 63},
			{43, 66, 32, 63}, {43, 67, 32, 63}, {43, 68, 32, 63}, {43, 69, 32, 63}, {44, 64, 32, 63},
			{44, 65, 32, 63}, {44, 66, 32, 63}, {44, 67, 32, 63}, {44, 68, 32, 63}, {44, 69, 32, 63},
			{45, 64, 32, 63}, {45, 65, 32, 63}, {45, 66, 32, 63}, {45, 67, 32, 63}, {45, 68, 32, 63},
			{45, 69, 32, 63}, {46, 64, 32, 63}, {46, 65, 32, 63}, {46, 66, 32, 63}, {46, 67, 32, 63},
			{46, 68, 32, 63}, {46, 69, 32, 63}, {47, 64, 32, 63}, {47, 65, 32, 63}, {47, 66, 32, 63},
			{47, 67, 32, 63}, {47, 68, 32, 63}, {47, 69, 32, 63}, {48, 64, 32, 63}, {48, 65, 32, 63},
			{48, 66, 32, 63}, {48, 67, 32, 63}, {48, 68, 32, 63}, {48, 69, 32, 63}, {49, 64, 32, 63},
			{49, 65, 32, 63}, {49, 66, 32, 63}, {49, 67, 32, 63}, {49, 68, 32, 63}, {49, 69, 32, 63},
			{50, 64, 32, 63}, {50, 65, 32, 63}, {50, 66, 32, 63}, {50, 67, 32, 63}, {50, 68, 32, 63},
			{50, 69, 32, 63}, {51, 64, 32, 63}, {51, 65, 32, 63}, {51, 66, 32, 63}, {51, 67, 32, 63},
			{51, 68, 32, 63}, {51, 69, 32, 63}, {52, 64, 32, 63}, {52, 65, 32, 63}, {52, 66, 32, 63},
			{52, 67, 32, 63}, {52, 68, 32, 63}, {52, 69, 32, 63}, {53, 64, 32, 63}, {53, 65, 32, 63},
			{53, 66, 32, 63}, {53, 67, 32, 63}, {53, 68, 32, 63}, {53, 69, 32, 63}, {54, 64, 32, 63},
			{54, 65, 32, 63}, {54, 66, 32, 63}, {54, 67, 32, 63}, {54, 68, 32, 63}, {54, 69, 32, 63},
			{55, 64, 32, 63}, {55, 65, 32, 63}, {55, 66, 32, 63}, {55, 67, 32, 63}, {55, 68, 32, 63},
			{55, 69, 32, 63}, {56, 64, 32, 63}, {56, 65, 32, 63}, {56, 66, 32, 63}, {56, 67, 32, 63},
			{56, 68, 32, 63}, {56, 69, 32, 63}, {57, 64, 32, 63}, {57, 65, 32, 63}, {57, 66, 32, 63},
			{57, 67, 32, 63}, {57, 68, 32, 63}, {57, 69, 32, 63}, {58, 64, 32, 63}, {58, 65, 32, 63},
			{58, 66, 32, 63}, {58, 67, 32, 63}, {58, 68, 32, 63}, {58, 69, 32, 63}, {59, 64, 32, 63},
			{59, 65, 32, 63}, {59, 66, 32, 63}, {59, 67, 32, 63}, {59, 68, 32, 63}, {59, 69, 32, 63},
			{40, 64, 64, 79}, {40, 65, 64, 79}, {40, 66, 64, 79}, {40, 67, 64, 79}, {40, 68, 64, 79},
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			{41, 68, 64, 79}, {41, 69, 64, 79}, {42, 64, 64, 79}, {42, 65, 64, 79}, {42, 66, 64, 79},
			{42, 67, 64, 79}, {42, 68, 64, 79}, {42, 69, 64, 79}, {43, 64, 64, 79}, {43, 65, 64, 79},
			{43, 66, 64, 79}, {43, 67, 64, 79}, {43, 68, 64, 79}, {43, 69, 64, 79}, {44, 64, 64, 79},
			{44, 65, 64, 79}, {44, 66, 64, 79}, {44, 67, 64, 79}, {44, 68, 64, 79}, {44, 69, 64, 79},
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			{45, 69, 64, 79}, {46, 64, 64, 79}, {46, 65, 64, 79}, {46, 66, 64, 79}, {46, 67, 64, 79},
			{46, 68, 64, 79}, {46, 69, 64, 79}, {47, 64, 64, 79}, {47, 65, 64, 79}, {47, 66, 64, 79},
			{47, 67, 64, 79}, {47, 68, 64, 79}, {47, 69, 64, 79}, {48, 64, 64, 79}, {48, 65, 64, 79},
			{48, 66, 64, 79}, {48, 67, 64, 79}, {48, 68, 64, 79}, {48, 69, 64, 79}, {49, 64, 64, 79},
			{49, 65, 64, 79}, {49, 66, 64, 79}, {49, 67, 64, 79}, {49, 68, 64, 79}, {49, 69, 64, 79},
			{50, 64, 64, 79}, {50, 65, 64, 79}, {50, 66, 64, 79}, {50, 67, 64, 79}, {50, 68, 64, 79},
			{50, 69, 64, 79}, {51, 64, 64, 79}, {51, 65, 64, 79}, {51, 66, 64, 79}, {51, 67, 64, 79},
			{51, 68, 64, 79}, {51, 69, 64, 79}, {52, 64, 64, 79}, {52, 65, 64, 79}, {52, 66, 64, 79},
			{52, 67, 64, 79}, {52, 68, 64, 79}, {52, 69, 64, 79}, {53, 64, 64, 79}, {53, 65, 64, 79},
			{53, 66, 64, 79}, {53, 67, 64, 79}, {53, 68, 64, 79}, {53, 69, 64, 79}, {54, 64, 64, 79},
			{54, 65, 64, 79}, {54, 66, 64, 79}, {54, 67, 64, 79}, {54, 68, 64, 79}, {54, 69, 64, 79},
			{55, 64, 64, 79}, {55, 65, 64, 79}, {55, 66, 64, 79}, {55, 67, 64, 79}, {55, 68, 64, 79},
			{55, 69, 64, 79}, {56, 64, 64, 79}, {56, 65, 64, 79}, {56, 66, 64, 79}, {56, 67, 64, 79},
			{56, 68, 64, 79}, {56, 69, 64, 79}, {57, 64, 64, 79}, {57, 65, 64, 79}, {57, 66, 64, 79},
			{57, 67, 64, 79}, {57, 68, 64, 79}, {57, 69, 64, 79}, {58, 64, 64, 79}, {58, 65, 64, 79},
			{58, 66, 64, 79}, {58, 67, 64, 79}, {58, 68, 64, 79}, {58, 69, 64, 79}, {59, 64, 64, 79},
			{59, 65, 64, 79}, {59, 66, 64, 79}, {59, 67, 64, 79}, {59, 68, 64, 79}, {59, 69, 64, 79},
		},
	}
	body3 = testBody{
		label:  3,
		offset: dvid.Point3d{40, 40, 10},
		size:   dvid.Point3d{20, 20, 30},
		blockSpans: []dvid.Span{
			{0, 1, 1, 1},
			{1, 1, 1, 1},
		},
		voxelSpans: []dvid.Span{
			{10, 40, 40, 59}, {10, 41, 40, 59}, {10, 42, 40, 59}, {10, 43, 40, 59}, {10, 44, 40, 59},
			{10, 45, 40, 59}, {10, 46, 40, 59}, {10, 47, 40, 59}, {10, 48, 40, 59}, {10, 49, 40, 59},
			{10, 50, 40, 59}, {10, 51, 40, 59}, {10, 52, 40, 59}, {10, 53, 40, 59}, {10, 54, 40, 59},
			{10, 55, 40, 59}, {10, 56, 40, 59}, {10, 57, 40, 59}, {10, 58, 40, 59}, {10, 59, 40, 59},
			{11, 40, 40, 59}, {11, 41, 40, 59}, {11, 42, 40, 59}, {11, 43, 40, 59}, {11, 44, 40, 59},
			{11, 45, 40, 59}, {11, 46, 40, 59}, {11, 47, 40, 59}, {11, 48, 40, 59}, {11, 49, 40, 59},
			{11, 50, 40, 59}, {11, 51, 40, 59}, {11, 52, 40, 59}, {11, 53, 40, 59}, {11, 54, 40, 59},
			{11, 55, 40, 59}, {11, 56, 40, 59}, {11, 57, 40, 59}, {11, 58, 40, 59}, {11, 59, 40, 59},
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			{12, 45, 40, 59}, {12, 46, 40, 59}, {12, 47, 40, 59}, {12, 48, 40, 59}, {12, 49, 40, 59},
			{12, 50, 40, 59}, {12, 51, 40, 59}, {12, 52, 40, 59}, {12, 53, 40, 59}, {12, 54, 40, 59},
			{12, 55, 40, 59}, {12, 56, 40, 59}, {12, 57, 40, 59}, {12, 58, 40, 59}, {12, 59, 40, 59},
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			{13, 50, 40, 59}, {13, 51, 40, 59}, {13, 52, 40, 59}, {13, 53, 40, 59}, {13, 54, 40, 59},
			{13, 55, 40, 59}, {13, 56, 40, 59}, {13, 57, 40, 59}, {13, 58, 40, 59}, {13, 59, 40, 59},
			{14, 40, 40, 59}, {14, 41, 40, 59}, {14, 42, 40, 59}, {14, 43, 40, 59}, {14, 44, 40, 59},
			{14, 45, 40, 59}, {14, 46, 40, 59}, {14, 47, 40, 59}, {14, 48, 40, 59}, {14, 49, 40, 59},
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			{15, 50, 40, 59}, {15, 51, 40, 59}, {15, 52, 40, 59}, {15, 53, 40, 59}, {15, 54, 40, 59},
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			{17, 55, 40, 59}, {17, 56, 40, 59}, {17, 57, 40, 59}, {17, 58, 40, 59}, {17, 59, 40, 59},
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			{19, 45, 40, 59}, {19, 46, 40, 59}, {19, 47, 40, 59}, {19, 48, 40, 59}, {19, 49, 40, 59},
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			{20, 50, 40, 59}, {20, 51, 40, 59}, {20, 52, 40, 59}, {20, 53, 40, 59}, {20, 54, 40, 59},
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			{21, 55, 40, 59}, {21, 56, 40, 59}, {21, 57, 40, 59}, {21, 58, 40, 59}, {21, 59, 40, 59},
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			{22, 50, 40, 59}, {22, 51, 40, 59}, {22, 52, 40, 59}, {22, 53, 40, 59}, {22, 54, 40, 59},
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			{23, 55, 40, 59}, {23, 56, 40, 59}, {23, 57, 40, 59}, {23, 58, 40, 59}, {23, 59, 40, 59},
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			{24, 50, 40, 59}, {24, 51, 40, 59}, {24, 52, 40, 59}, {24, 53, 40, 59}, {24, 54, 40, 59},
			{24, 55, 40, 59}, {24, 56, 40, 59}, {24, 57, 40, 59}, {24, 58, 40, 59}, {24, 59, 40, 59},
			{25, 40, 40, 59}, {25, 41, 40, 59}, {25, 42, 40, 59}, {25, 43, 40, 59}, {25, 44, 40, 59},
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		},
	}
	body4 = testBody{
		label:  4,
		offset: dvid.Point3d{75, 40, 60},
		size:   dvid.Point3d{20, 20, 30},
		blockSpans: []dvid.Span{
			{1, 1, 2, 2},
			{2, 1, 2, 2},
		},
		voxelSpans: []dvid.Span{
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			{85, 55, 75, 94}, {85, 56, 75, 94}, {85, 57, 75, 94}, {85, 58, 75, 94}, {85, 59, 75, 94},
			{86, 40, 75, 94}, {86, 41, 75, 94}, {86, 42, 75, 94}, {86, 43, 75, 94}, {86, 44, 75, 94},
			{86, 45, 75, 94}, {86, 46, 75, 94}, {86, 47, 75, 94}, {86, 48, 75, 94}, {86, 49, 75, 94},
			{86, 50, 75, 94}, {86, 51, 75, 94}, {86, 52, 75, 94}, {86, 53, 75, 94}, {86, 54, 75, 94},
			{86, 55, 75, 94}, {86, 56, 75, 94}, {86, 57, 75, 94}, {86, 58, 75, 94}, {86, 59, 75, 94},
			{87, 40, 75, 94}, {87, 41, 75, 94}, {87, 42, 75, 94}, {87, 43, 75, 94}, {87, 44, 75, 94},
			{87, 45, 75, 94}, {87, 46, 75, 94}, {87, 47, 75, 94}, {87, 48, 75, 94}, {87, 49, 75, 94},
			{87, 50, 75, 94}, {87, 51, 75, 94}, {87, 52, 75, 94}, {87, 53, 75, 94}, {87, 54, 75, 94},
			{87, 55, 75, 94}, {87, 56, 75, 94}, {87, 57, 75, 94}, {87, 58, 75, 94}, {87, 59, 75, 94},
			{88, 40, 75, 94}, {88, 41, 75, 94}, {88, 42, 75, 94}, {88, 43, 75, 94}, {88, 44, 75, 94},
			{88, 45, 75, 94}, {88, 46, 75, 94}, {88, 47, 75, 94}, {88, 48, 75, 94}, {88, 49, 75, 94},
			{88, 50, 75, 94}, {88, 51, 75, 94}, {88, 52, 75, 94}, {88, 53, 75, 94}, {88, 54, 75, 94},
			{88, 55, 75, 94}, {88, 56, 75, 94}, {88, 57, 75, 94}, {88, 58, 75, 94}, {88, 59, 75, 94},
			{89, 40, 75, 94}, {89, 41, 75, 94}, {89, 42, 75, 94}, {89, 43, 75, 94}, {89, 44, 75, 94},
			{89, 45, 75, 94}, {89, 46, 75, 94}, {89, 47, 75, 94}, {89, 48, 75, 94}, {89, 49, 75, 94},
			{89, 50, 75, 94}, {89, 51, 75, 94}, {89, 52, 75, 94}, {89, 53, 75, 94}, {89, 54, 75, 94},
			{89, 55, 75, 94}, {89, 56, 75, 94}, {89, 57, 75, 94}, {89, 58, 75, 94}, {89, 59, 75, 94},
		},
	}
	bodyleft = testBody{
		label:  6,
		offset: dvid.Point3d{75, 40, 60},
		size:   dvid.Point3d{20, 20, 21},
		blockSpans: []dvid.Span{
			{1, 1, 2, 2},
			{2, 1, 2, 2},
		},
		voxelSpans: []dvid.Span{
			{60, 40, 75, 94}, {60, 41, 75, 94}, {60, 42, 75, 94}, {60, 43, 75, 94}, {60, 44, 75, 94},
			{60, 45, 75, 94}, {60, 46, 75, 94}, {60, 47, 75, 94}, {60, 48, 75, 94}, {60, 49, 75, 94},
			{60, 50, 75, 94}, {60, 51, 75, 94}, {60, 52, 75, 94}, {60, 53, 75, 94}, {60, 54, 75, 94},
			{60, 55, 75, 94}, {60, 56, 75, 94}, {60, 57, 75, 94}, {60, 58, 75, 94}, {60, 59, 75, 94},
			{61, 40, 75, 94}, {61, 41, 75, 94}, {61, 42, 75, 94}, {61, 43, 75, 94}, {61, 44, 75, 94},
			{61, 45, 75, 94}, {61, 46, 75, 94}, {61, 47, 75, 94}, {61, 48, 75, 94}, {61, 49, 75, 94},
			{61, 50, 75, 94}, {61, 51, 75, 94}, {61, 52, 75, 94}, {61, 53, 75, 94}, {61, 54, 75, 94},
			{61, 55, 75, 94}, {61, 56, 75, 94}, {61, 57, 75, 94}, {61, 58, 75, 94}, {61, 59, 75, 94},
			{62, 40, 75, 94}, {62, 41, 75, 94}, {62, 42, 75, 94}, {62, 43, 75, 94}, {62, 44, 75, 94},
			{62, 45, 75, 94}, {62, 46, 75, 94}, {62, 47, 75, 94}, {62, 48, 75, 94}, {62, 49, 75, 94},
			{62, 50, 75, 94}, {62, 51, 75, 94}, {62, 52, 75, 94}, {62, 53, 75, 94}, {62, 54, 75, 94},
			{62, 55, 75, 94}, {62, 56, 75, 94}, {62, 57, 75, 94}, {62, 58, 75, 94}, {62, 59, 75, 94},
			{63, 40, 75, 94}, {63, 41, 75, 94}, {63, 42, 75, 94}, {63, 43, 75, 94}, {63, 44, 75, 94},
			{63, 45, 75, 94}, {63, 46, 75, 94}, {63, 47, 75, 94}, {63, 48, 75, 94}, {63, 49, 75, 94},
			{63, 50, 75, 94}, {63, 51, 75, 94}, {63, 52, 75, 94}, {63, 53, 75, 94}, {63, 54, 75, 94},
			{63, 55, 75, 94}, {63, 56, 75, 94}, {63, 57, 75, 94}, {63, 58, 75, 94}, {63, 59, 75, 94},
			{64, 40, 75, 94}, {64, 41, 75, 94}, {64, 42, 75, 94}, {64, 43, 75, 94}, {64, 44, 75, 94},
			{64, 45, 75, 94}, {64, 46, 75, 94}, {64, 47, 75, 94}, {64, 48, 75, 94}, {64, 49, 75, 94},
			{64, 50, 75, 94}, {64, 51, 75, 94}, {64, 52, 75, 94}, {64, 53, 75, 94}, {64, 54, 75, 94},
			{64, 55, 75, 94}, {64, 56, 75, 94}, {64, 57, 75, 94}, {64, 58, 75, 94}, {64, 59, 75, 94},
			{65, 40, 75, 94}, {65, 41, 75, 94}, {65, 42, 75, 94}, {65, 43, 75, 94}, {65, 44, 75, 94},
			{65, 45, 75, 94}, {65, 46, 75, 94}, {65, 47, 75, 94}, {65, 48, 75, 94}, {65, 49, 75, 94},
			{65, 50, 75, 94}, {65, 51, 75, 94}, {65, 52, 75, 94}, {65, 53, 75, 94}, {65, 54, 75, 94},
			{65, 55, 75, 94}, {65, 56, 75, 94}, {65, 57, 75, 94}, {65, 58, 75, 94}, {65, 59, 75, 94},
			{66, 40, 75, 94}, {66, 41, 75, 94}, {66, 42, 75, 94}, {66, 43, 75, 94}, {66, 44, 75, 94},
			{66, 45, 75, 94}, {66, 46, 75, 94}, {66, 47, 75, 94}, {66, 48, 75, 94}, {66, 49, 75, 94},
			{66, 50, 75, 94}, {66, 51, 75, 94}, {66, 52, 75, 94}, {66, 53, 75, 94}, {66, 54, 75, 94},
			{66, 55, 75, 94}, {66, 56, 75, 94}, {66, 57, 75, 94}, {66, 58, 75, 94}, {66, 59, 75, 94},
			{67, 40, 75, 94}, {67, 41, 75, 94}, {67, 42, 75, 94}, {67, 43, 75, 94}, {67, 44, 75, 94},
			{67, 45, 75, 94}, {67, 46, 75, 94}, {67, 47, 75, 94}, {67, 48, 75, 94}, {67, 49, 75, 94},
			{67, 50, 75, 94}, {67, 51, 75, 94}, {67, 52, 75, 94}, {67, 53, 75, 94}, {67, 54, 75, 94},
			{67, 55, 75, 94}, {67, 56, 75, 94}, {67, 57, 75, 94}, {67, 58, 75, 94}, {67, 59, 75, 94},
			{68, 40, 75, 94}, {68, 41, 75, 94}, {68, 42, 75, 94}, {68, 43, 75, 94}, {68, 44, 75, 94},
			{68, 45, 75, 94}, {68, 46, 75, 94}, {68, 47, 75, 94}, {68, 48, 75, 94}, {68, 49, 75, 94},
			{68, 50, 75, 94}, {68, 51, 75, 94}, {68, 52, 75, 94}, {68, 53, 75, 94}, {68, 54, 75, 94},
			{68, 55, 75, 94}, {68, 56, 75, 94}, {68, 57, 75, 94}, {68, 58, 75, 94}, {68, 59, 75, 94},
			{69, 40, 75, 94}, {69, 41, 75, 94}, {69, 42, 75, 94}, {69, 43, 75, 94}, {69, 44, 75, 94},
			{69, 45, 75, 94}, {69, 46, 75, 94}, {69, 47, 75, 94}, {69, 48, 75, 94}, {69, 49, 75, 94},
			{69, 50, 75, 94}, {69, 51, 75, 94}, {69, 52, 75, 94}, {69, 53, 75, 94}, {69, 54, 75, 94},
			{69, 55, 75, 94}, {69, 56, 75, 94}, {69, 57, 75, 94}, {69, 58, 75, 94}, {69, 59, 75, 94},
			{70, 40, 75, 94}, {70, 41, 75, 94}, {70, 42, 75, 94}, {70, 43, 75, 94}, {70, 44, 75, 94},
			{70, 45, 75, 94}, {70, 46, 75, 94}, {70, 47, 75, 94}, {70, 48, 75, 94}, {70, 49, 75, 94},
			{70, 50, 75, 94}, {70, 51, 75, 94}, {70, 52, 75, 94}, {70, 53, 75, 94}, {70, 54, 75, 94},
			{70, 55, 75, 94}, {70, 56, 75, 94}, {70, 57, 75, 94}, {70, 58, 75, 94}, {70, 59, 75, 94},
			{71, 40, 75, 94}, {71, 41, 75, 94}, {71, 42, 75, 94}, {71, 43, 75, 94}, {71, 44, 75, 94},
			{71, 45, 75, 94}, {71, 46, 75, 94}, {71, 47, 75, 94}, {71, 48, 75, 94}, {71, 49, 75, 94},
			{71, 50, 75, 94}, {71, 51, 75, 94}, {71, 52, 75, 94}, {71, 53, 75, 94}, {71, 54, 75, 94},
			{71, 55, 75, 94}, {71, 56, 75, 94}, {71, 57, 75, 94}, {71, 58, 75, 94}, {71, 59, 75, 94},
			{72, 40, 75, 94}, {72, 41, 75, 94}, {72, 42, 75, 94}, {72, 43, 75, 94}, {72, 44, 75, 94},
			{72, 45, 75, 94}, {72, 46, 75, 94}, {72, 47, 75, 94}, {72, 48, 75, 94}, {72, 49, 75, 94},
			{72, 50, 75, 94}, {72, 51, 75, 94}, {72, 52, 75, 94}, {72, 53, 75, 94}, {72, 54, 75, 94},
			{72, 55, 75, 94}, {72, 56, 75, 94}, {72, 57, 75, 94}, {72, 58, 75, 94}, {72, 59, 75, 94},
			{73, 40, 75, 94}, {73, 41, 75, 94}, {73, 42, 75, 94}, {73, 43, 75, 94}, {73, 44, 75, 94},
			{73, 45, 75, 94}, {73, 46, 75, 94}, {73, 47, 75, 94}, {73, 48, 75, 94}, {73, 49, 75, 94},
			{73, 50, 75, 94}, {73, 51, 75, 94}, {73, 52, 75, 94}, {73, 53, 75, 94}, {73, 54, 75, 94},
			{73, 55, 75, 94}, {73, 56, 75, 94}, {73, 57, 75, 94}, {73, 58, 75, 94}, {73, 59, 75, 94},
			{74, 40, 75, 94}, {74, 41, 75, 94}, {74, 42, 75, 94}, {74, 43, 75, 94}, {74, 44, 75, 94},
			{74, 45, 75, 94}, {74, 46, 75, 94}, {74, 47, 75, 94}, {74, 48, 75, 94}, {74, 49, 75, 94},
			{74, 50, 75, 94}, {74, 51, 75, 94}, {74, 52, 75, 94}, {74, 53, 75, 94}, {74, 54, 75, 94},
			{74, 55, 75, 94}, {74, 56, 75, 94}, {74, 57, 75, 94}, {74, 58, 75, 94}, {74, 59, 75, 94},
			{75, 40, 75, 94}, {75, 41, 75, 94}, {75, 42, 75, 94}, {75, 43, 75, 94}, {75, 44, 75, 94},
			{75, 45, 75, 94}, {75, 46, 75, 94}, {75, 47, 75, 94}, {75, 48, 75, 94}, {75, 49, 75, 94},
			{75, 50, 75, 94}, {75, 51, 75, 94}, {75, 52, 75, 94}, {75, 53, 75, 94}, {75, 54, 75, 94},
			{75, 55, 75, 94}, {75, 56, 75, 94}, {75, 57, 75, 94}, {75, 58, 75, 94}, {75, 59, 75, 94},
			{76, 40, 75, 94}, {76, 41, 75, 94}, {76, 42, 75, 94}, {76, 43, 75, 94}, {76, 44, 75, 94},
			{76, 45, 75, 94}, {76, 46, 75, 94}, {76, 47, 75, 94}, {76, 48, 75, 94}, {76, 49, 75, 94},
			{76, 50, 75, 94}, {76, 51, 75, 94}, {76, 52, 75, 94}, {76, 53, 75, 94}, {76, 54, 75, 94},
			{76, 55, 75, 94}, {76, 56, 75, 94}, {76, 57, 75, 94}, {76, 58, 75, 94}, {76, 59, 75, 94},
			{77, 40, 75, 94}, {77, 41, 75, 94}, {77, 42, 75, 94}, {77, 43, 75, 94}, {77, 44, 75, 94},
			{77, 45, 75, 94}, {77, 46, 75, 94}, {77, 47, 75, 94}, {77, 48, 75, 94}, {77, 49, 75, 94},
			{77, 50, 75, 94}, {77, 51, 75, 94}, {77, 52, 75, 94}, {77, 53, 75, 94}, {77, 54, 75, 94},
			{77, 55, 75, 94}, {77, 56, 75, 94}, {77, 57, 75, 94}, {77, 58, 75, 94}, {77, 59, 75, 94},
			{78, 40, 75, 94}, {78, 41, 75, 94}, {78, 42, 75, 94}, {78, 43, 75, 94}, {78, 44, 75, 94},
			{78, 45, 75, 94}, {78, 46, 75, 94}, {78, 47, 75, 94}, {78, 48, 75, 94}, {78, 49, 75, 94},
			{78, 50, 75, 94}, {78, 51, 75, 94}, {78, 52, 75, 94}, {78, 53, 75, 94}, {78, 54, 75, 94},
			{78, 55, 75, 94}, {78, 56, 75, 94}, {78, 57, 75, 94}, {78, 58, 75, 94}, {78, 59, 75, 94},
			{79, 40, 75, 94}, {79, 41, 75, 94}, {79, 42, 75, 94}, {79, 43, 75, 94}, {79, 44, 75, 94},
			{79, 45, 75, 94}, {79, 46, 75, 94}, {79, 47, 75, 94}, {79, 48, 75, 94}, {79, 49, 75, 94},
			{79, 50, 75, 94}, {79, 51, 75, 94}, {79, 52, 75, 94}, {79, 53, 75, 94}, {79, 54, 75, 94},
			{79, 55, 75, 94}, {79, 56, 75, 94}, {79, 57, 75, 94}, {79, 58, 75, 94}, {79, 59, 75, 94},
			{80, 40, 75, 80}, {80, 40, 87, 89}, {80, 40, 93, 94},
		},
	}
	bodysplit = testBody{
		label:  5,
		offset: dvid.Point3d{75, 40, 80},
		size:   dvid.Point3d{20, 20, 10},
		blockSpans: []dvid.Span{
			{2, 1, 2, 2},
		},
		voxelSpans: []dvid.Span{
			{80, 40, 81, 86}, {80, 40, 90, 92}, // These first 2 test splits interleaved in one span.
			{80, 41, 75, 94}, {80, 42, 75, 94}, {80, 43, 75, 94}, {80, 44, 75, 94},
			{80, 45, 75, 94}, {80, 46, 75, 94}, {80, 47, 75, 94}, {80, 48, 75, 94}, {80, 49, 75, 94},
			{80, 50, 75, 94}, {80, 51, 75, 94}, {80, 52, 75, 94}, {80, 53, 75, 94}, {80, 54, 75, 94},
			{80, 55, 75, 94}, {80, 56, 75, 94}, {80, 57, 75, 94}, {80, 58, 75, 94}, {80, 59, 75, 94},
			{81, 40, 75, 94}, {81, 41, 75, 94}, {81, 42, 75, 94}, {81, 43, 75, 94}, {81, 44, 75, 94},
			{81, 45, 75, 94}, {81, 46, 75, 94}, {81, 47, 75, 94}, {81, 48, 75, 94}, {81, 49, 75, 94},
			{81, 50, 75, 94}, {81, 51, 75, 94}, {81, 52, 75, 94}, {81, 53, 75, 94}, {81, 54, 75, 94},
			{81, 55, 75, 94}, {81, 56, 75, 94}, {81, 57, 75, 94}, {81, 58, 75, 94}, {81, 59, 75, 94},
			{82, 40, 75, 94}, {82, 41, 75, 94}, {82, 42, 75, 94}, {82, 43, 75, 94}, {82, 44, 75, 94},
			{82, 45, 75, 94}, {82, 46, 75, 94}, {82, 47, 75, 94}, {82, 48, 75, 94}, {82, 49, 75, 94},
			{82, 50, 75, 94}, {82, 51, 75, 94}, {82, 52, 75, 94}, {82, 53, 75, 94}, {82, 54, 75, 94},
			{82, 55, 75, 94}, {82, 56, 75, 94}, {82, 57, 75, 94}, {82, 58, 75, 94}, {82, 59, 75, 94},
			{83, 40, 75, 94}, {83, 41, 75, 94}, {83, 42, 75, 94}, {83, 43, 75, 94}, {83, 44, 75, 94},
			{83, 45, 75, 94}, {83, 46, 75, 94}, {83, 47, 75, 94}, {83, 48, 75, 94}, {83, 49, 75, 94},
			{83, 50, 75, 94}, {83, 51, 75, 94}, {83, 52, 75, 94}, {83, 53, 75, 94}, {83, 54, 75, 94},
			{83, 55, 75, 94}, {83, 56, 75, 94}, {83, 57, 75, 94}, {83, 58, 75, 94}, {83, 59, 75, 94},
			{84, 40, 75, 94}, {84, 41, 75, 94}, {84, 42, 75, 94}, {84, 43, 75, 94}, {84, 44, 75, 94},
			{84, 45, 75, 94}, {84, 46, 75, 94}, {84, 47, 75, 94}, {84, 48, 75, 94}, {84, 49, 75, 94},
			{84, 50, 75, 94}, {84, 51, 75, 94}, {84, 52, 75, 94}, {84, 53, 75, 94}, {84, 54, 75, 94},
			{84, 55, 75, 94}, {84, 56, 75, 94}, {84, 57, 75, 94}, {84, 58, 75, 94}, {84, 59, 75, 94},
			{85, 40, 75, 94}, {85, 41, 75, 94}, {85, 42, 75, 94}, {85, 43, 75, 94}, {85, 44, 75, 94},
			{85, 45, 75, 94}, {85, 46, 75, 94}, {85, 47, 75, 94}, {85, 48, 75, 94}, {85, 49, 75, 94},
			{85, 50, 75, 94}, {85, 51, 75, 94}, {85, 52, 75, 94}, {85, 53, 75, 94}, {85, 54, 75, 94},
			{85, 55, 75, 94}, {85, 56, 75, 94}, {85, 57, 75, 94}, {85, 58, 75, 94}, {85, 59, 75, 94},
			{86, 40, 75, 94}, {86, 41, 75, 94}, {86, 42, 75, 94}, {86, 43, 75, 94}, {86, 44, 75, 94},
			{86, 45, 75, 94}, {86, 46, 75, 94}, {86, 47, 75, 94}, {86, 48, 75, 94}, {86, 49, 75, 94},
			{86, 50, 75, 94}, {86, 51, 75, 94}, {86, 52, 75, 94}, {86, 53, 75, 94}, {86, 54, 75, 94},
			{86, 55, 75, 94}, {86, 56, 75, 94}, {86, 57, 75, 94}, {86, 58, 75, 94}, {86, 59, 75, 94},
			{87, 40, 75, 94}, {87, 41, 75, 94}, {87, 42, 75, 94}, {87, 43, 75, 94}, {87, 44, 75, 94},
			{87, 45, 75, 94}, {87, 46, 75, 94}, {87, 47, 75, 94}, {87, 48, 75, 94}, {87, 49, 75, 94},
			{87, 50, 75, 94}, {87, 51, 75, 94}, {87, 52, 75, 94}, {87, 53, 75, 94}, {87, 54, 75, 94},
			{87, 55, 75, 94}, {87, 56, 75, 94}, {87, 57, 75, 94}, {87, 58, 75, 94}, {87, 59, 75, 94},
			{88, 40, 75, 94}, {88, 41, 75, 94}, {88, 42, 75, 94}, {88, 43, 75, 94}, {88, 44, 75, 94},
			{88, 45, 75, 94}, {88, 46, 75, 94}, {88, 47, 75, 94}, {88, 48, 75, 94}, {88, 49, 75, 94},
			{88, 50, 75, 94}, {88, 51, 75, 94}, {88, 52, 75, 94}, {88, 53, 75, 94}, {88, 54, 75, 94},
			{88, 55, 75, 94}, {88, 56, 75, 94}, {88, 57, 75, 94}, {88, 58, 75, 94}, {88, 59, 75, 94},
			{89, 40, 75, 94}, {89, 41, 75, 94}, {89, 42, 75, 94}, {89, 43, 75, 94}, {89, 44, 75, 94},
			{89, 45, 75, 94}, {89, 46, 75, 94}, {89, 47, 75, 94}, {89, 48, 75, 94}, {89, 49, 75, 94},
			{89, 50, 75, 94}, {89, 51, 75, 94}, {89, 52, 75, 94}, {89, 53, 75, 94}, {89, 54, 75, 94},
			{89, 55, 75, 94}, {89, 56, 75, 94}, {89, 57, 75, 94}, {89, 58, 75, 94}, {89, 59, 75, 94},
		},
	}
	body6 = testBody{
		label:  6,
		offset: dvid.Point3d{8, 10, 7},
		size:   dvid.Point3d{52, 50, 10},
		blockSpans: []dvid.Span{
			{0, 0, 0, 1},
			{0, 1, 0, 1},
		},
		voxelSpans: []dvid.Span{
			{8, 11, 9, 31}, {8, 12, 9, 59}, {8, 13, 9, 59}, {8, 14, 9, 59},
			{8, 15, 19, 59}, {8, 16, 19, 59}, {8, 17, 19, 59}, {8, 18, 19, 59},
			{8, 19, 29, 59}, {8, 20, 29, 59}, {8, 21, 29, 59}, {8, 22, 29, 59},
			{8, 23, 39, 59}, {8, 24, 39, 59}, {8, 25, 39, 59}, {8, 26, 39, 59},
			{8, 23, 39, 59}, {8, 24, 39, 59}, {8, 25, 39, 59}, {8, 26, 39, 59},
			{8, 27, 39, 59}, {8, 28, 39, 59}, {8, 29, 39, 59}, {8, 30, 39, 59},
			{8, 31, 39, 59}, {8, 32, 39, 59}, {8, 33, 39, 59}, {8, 34, 39, 59},
			{8, 35, 39, 59}, {8, 36, 39, 59}, {8, 37, 45, 59}, {8, 38, 39, 59},
			{8, 39, 39, 59}, {8, 40, 39, 59}, {8, 41, 42, 59}, {8, 42, 39, 56},
			{8, 43, 39, 59}, {8, 44, 39, 59}, {8, 45, 39, 59}, {8, 46, 39, 50},

			{8, 11, 9, 59}, {8, 12, 9, 59}, {8, 13, 9, 59}, {8, 14, 9, 59},
			{8, 15, 19, 59}, {8, 16, 19, 59}, {8, 17, 19, 59}, {8, 18, 19, 59},
			{8, 19, 29, 59}, {8, 20, 29, 59}, {8, 21, 29, 59}, {8, 22, 29, 59},
			{8, 23, 39, 59}, {8, 24, 39, 59}, {8, 25, 39, 59}, {8, 26, 39, 59},
			{8, 23, 39, 59}, {8, 24, 39, 59}, {8, 25, 39, 59}, {8, 26, 39, 59},
			{8, 27, 39, 59}, {8, 28, 39, 59}, {8, 29, 39, 59}, {8, 30, 39, 59},
			{8, 31, 39, 59}, {8, 32, 39, 59}, {8, 33, 39, 59}, {8, 34, 39, 59},
			{8, 35, 39, 59}, {8, 36, 39, 59}, {8, 37, 45, 59}, {8, 38, 39, 59},
			{8, 39, 39, 59}, {8, 40, 39, 59}, {8, 41, 42, 59}, {8, 42, 39, 56},
			{8, 43, 39, 59}, {8, 44, 39, 59}, {8, 45, 39, 59}, {8, 46, 39, 50},

			{9, 11, 9, 59}, {9, 12, 9, 59}, {9, 13, 9, 59}, {9, 14, 9, 59},
			{9, 15, 19, 59}, {9, 16, 19, 59}, {9, 17, 19, 59}, {9, 18, 19, 59},
			{9, 19, 29, 59}, {9, 20, 29, 59}, {9, 21, 29, 59}, {9, 22, 29, 59},
			{9, 23, 39, 59}, {9, 24, 39, 59}, {9, 25, 39, 59}, {9, 26, 39, 59},
			{9, 23, 39, 59}, {9, 24, 39, 59}, {9, 25, 39, 59}, {9, 26, 39, 59},
			{9, 27, 39, 59}, {9, 28, 39, 59}, {9, 29, 39, 59}, {9, 30, 39, 59},
			{9, 31, 39, 59}, {9, 32, 39, 59}, {9, 33, 39, 59}, {9, 34, 39, 59},
			{9, 35, 39, 59}, {9, 36, 39, 59}, {9, 37, 45, 59}, {9, 38, 39, 59},
			{9, 39, 39, 59}, {9, 40, 39, 59}, {9, 41, 42, 59}, {9, 42, 39, 56},
			{9, 43, 39, 59}, {9, 44, 39, 59}, {9, 45, 39, 59}, {9, 46, 39, 50},

			{10, 11, 9, 59}, {10, 12, 9, 59}, {10, 13, 9, 59}, {10, 14, 9, 59},
			{10, 15, 19, 59}, {10, 16, 19, 59}, {10, 17, 19, 59}, {10, 18, 19, 59},
			{10, 19, 29, 59}, {10, 20, 29, 59}, {10, 21, 29, 59}, {10, 22, 29, 59},
			{10, 23, 39, 59}, {10, 24, 39, 59}, {10, 25, 39, 59}, {10, 26, 39, 59},
			{10, 23, 39, 59}, {10, 24, 39, 59}, {10, 25, 39, 59}, {10, 26, 39, 59},
			{10, 27, 39, 59}, {10, 28, 39, 59}, {10, 29, 39, 59}, {10, 30, 39, 59},
			{10, 31, 39, 59}, {10, 32, 39, 59}, {10, 33, 39, 59}, {10, 34, 39, 59},
			{10, 35, 39, 59}, {10, 36, 39, 59}, {10, 37, 45, 59}, {10, 38, 39, 59},
			{10, 39, 39, 59}, {10, 40, 39, 59}, {10, 41, 42, 59}, {10, 42, 39, 56},
			{10, 43, 39, 59}, {10, 44, 39, 59}, {10, 45, 39, 59}, {10, 46, 39, 50},

			{11, 11, 9, 59}, {11, 12, 9, 59}, {11, 13, 9, 59}, {11, 14, 9, 59},
			{11, 15, 19, 59}, {11, 16, 19, 59}, {11, 17, 19, 59}, {11, 18, 19, 59},
			{11, 19, 29, 59}, {11, 20, 29, 59}, {11, 21, 29, 59}, {11, 22, 29, 59},
			{11, 23, 39, 59}, {11, 24, 39, 59}, {11, 25, 39, 59}, {11, 26, 39, 59},
			{11, 23, 39, 59}, {11, 24, 39, 59}, {11, 25, 39, 59}, {11, 26, 39, 59},
			{11, 27, 39, 59}, {11, 28, 39, 59}, {11, 29, 39, 59}, {11, 30, 39, 59},
			{11, 31, 39, 59}, {11, 32, 39, 59}, {11, 33, 39, 59}, {11, 34, 39, 59},
			{11, 35, 39, 59}, {11, 36, 39, 59}, {11, 37, 45, 59}, {11, 38, 39, 59},
			{11, 39, 39, 59}, {11, 40, 39, 59}, {11, 41, 42, 59}, {11, 42, 39, 56},
			{11, 43, 39, 59}, {11, 44, 39, 59}, {11, 45, 39, 59}, {11, 46, 39, 50},

			{12, 11, 9, 59}, {12, 12, 9, 59}, {12, 13, 9, 59}, {12, 14, 9, 59},
			{12, 15, 19, 59}, {12, 16, 19, 59}, {12, 17, 19, 59}, {12, 18, 19, 59},
			{12, 19, 29, 59}, {12, 20, 29, 59}, {12, 21, 29, 59}, {12, 22, 29, 59},
			{12, 23, 39, 59}, {12, 24, 39, 59}, {12, 25, 39, 59}, {12, 26, 39, 59},
			{12, 23, 39, 59}, {12, 24, 39, 59}, {12, 25, 39, 59}, {12, 26, 39, 59},
			{12, 27, 39, 59}, {12, 28, 39, 59}, {12, 29, 39, 59}, {12, 30, 39, 59},
			{12, 31, 39, 59}, {12, 32, 39, 59}, {12, 33, 39, 59}, {12, 34, 39, 59},
			{12, 35, 39, 59}, {12, 36, 39, 59}, {12, 37, 45, 59}, {12, 38, 39, 59},
			{12, 39, 39, 59}, {12, 40, 39, 59}, {12, 41, 42, 59}, {12, 42, 39, 56},
			{12, 43, 39, 59}, {12, 44, 39, 59}, {12, 45, 39, 59}, {12, 46, 39, 50},
		},
	}
	body7 = testBody{
		label:  7,
		offset: dvid.Point3d{68, 10, 7},
		size:   dvid.Point3d{52, 50, 10},
		blockSpans: []dvid.Span{
			{2, 0, 0, 1},
			{2, 1, 0, 1},
		},
		voxelSpans: []dvid.Span{
			{78, 11, 9, 59}, {78, 12, 9, 59}, {78, 13, 9, 59}, {78, 14, 9, 59},
			{78, 15, 19, 59}, {78, 16, 19, 59}, {78, 17, 19, 59}, {78, 18, 19, 59},
			{78, 19, 29, 59}, {78, 20, 29, 59}, {78, 21, 29, 59}, {78, 22, 29, 59},
			{78, 23, 39, 59}, {78, 24, 39, 59}, {78, 25, 39, 59}, {78, 26, 39, 59},
			{78, 23, 39, 59}, {78, 24, 39, 59}, {78, 25, 39, 59}, {78, 26, 39, 59},
			{78, 27, 39, 59}, {78, 28, 39, 59}, {78, 29, 39, 59}, {78, 30, 39, 59},
			{78, 31, 39, 59}, {78, 32, 39, 59}, {78, 33, 39, 59}, {78, 34, 39, 59},
			{78, 35, 39, 59}, {78, 36, 39, 59}, {78, 37, 45, 59}, {78, 38, 39, 59},
			{78, 39, 39, 59}, {78, 40, 39, 59}, {78, 41, 42, 59}, {78, 42, 39, 56},
			{78, 43, 39, 59}, {78, 44, 39, 59}, {78, 45, 39, 59}, {78, 46, 39, 50},

			{79, 11, 9, 59}, {79, 12, 9, 59}, {79, 13, 9, 59}, {79, 14, 9, 59},
			{79, 15, 19, 59}, {79, 16, 19, 59}, {79, 17, 19, 59}, {79, 18, 19, 59},
			{79, 19, 29, 59}, {79, 20, 29, 59}, {79, 21, 29, 59}, {79, 22, 29, 59},
			{79, 23, 39, 59}, {79, 24, 39, 59}, {79, 25, 39, 59}, {79, 26, 39, 59},
			{79, 23, 39, 59}, {79, 24, 39, 59}, {79, 25, 39, 59}, {79, 26, 39, 59},
			{79, 27, 39, 59}, {79, 28, 39, 59}, {79, 29, 39, 59}, {79, 30, 39, 59},
			{79, 31, 39, 59}, {79, 32, 39, 59}, {79, 33, 39, 59}, {79, 34, 39, 59},
			{79, 35, 39, 59}, {79, 36, 39, 59}, {79, 37, 45, 59}, {79, 38, 39, 59},
			{79, 39, 39, 59}, {79, 40, 39, 59}, {79, 41, 42, 59}, {79, 42, 39, 56},
			{79, 43, 39, 59}, {79, 44, 39, 59}, {79, 45, 39, 59}, {79, 46, 39, 50},

			{80, 11, 9, 59}, {80, 12, 9, 59}, {80, 13, 9, 59}, {80, 14, 9, 59},
			{80, 15, 19, 59}, {80, 16, 19, 59}, {80, 17, 19, 59}, {80, 18, 19, 59},
			{80, 19, 29, 59}, {80, 20, 29, 59}, {80, 21, 29, 59}, {80, 22, 29, 59},
			{80, 23, 39, 59}, {80, 24, 39, 59}, {80, 25, 39, 59}, {80, 26, 39, 59},
			{80, 23, 39, 59}, {80, 24, 39, 59}, {80, 25, 39, 59}, {80, 26, 39, 59},
			{80, 27, 39, 59}, {80, 28, 39, 59}, {80, 29, 39, 59}, {80, 30, 39, 59},
			{80, 31, 39, 59}, {80, 32, 39, 59}, {80, 33, 39, 59}, {80, 34, 39, 59},
			{80, 35, 39, 59}, {80, 36, 39, 59}, {80, 37, 45, 59}, {80, 38, 39, 59},
			{80, 39, 39, 59}, {80, 40, 39, 59}, {80, 41, 42, 59}, {80, 42, 39, 56},
			{80, 43, 39, 59}, {80, 44, 39, 59}, {80, 45, 39, 59}, {80, 46, 39, 50},

			{81, 11, 9, 59}, {81, 12, 9, 59}, {81, 13, 9, 59}, {81, 14, 9, 59},
			{81, 15, 19, 59}, {81, 16, 19, 59}, {81, 17, 19, 59}, {81, 18, 19, 59},
			{81, 19, 29, 59}, {81, 20, 29, 59}, {81, 21, 29, 59}, {81, 22, 29, 59},
			{81, 23, 39, 59}, {81, 24, 39, 59}, {81, 25, 39, 59}, {81, 26, 39, 59},
			{81, 23, 39, 59}, {81, 24, 39, 59}, {81, 25, 39, 59}, {81, 26, 39, 59},
			{81, 27, 39, 59}, {81, 28, 39, 59}, {81, 29, 39, 59}, {81, 30, 39, 59},
			{81, 31, 39, 59}, {81, 32, 39, 59}, {81, 33, 39, 59}, {81, 34, 39, 59},
			{81, 35, 39, 59}, {81, 36, 39, 59}, {81, 37, 45, 59}, {81, 38, 39, 59},
			{81, 39, 39, 59}, {81, 40, 39, 59}, {81, 41, 42, 59}, {81, 42, 39, 56},
			{81, 43, 39, 59}, {81, 44, 39, 59}, {81, 45, 39, 59}, {81, 46, 39, 50},

			{82, 11, 9, 59}, {82, 12, 9, 59}, {82, 13, 9, 59}, {82, 14, 9, 59},
			{82, 15, 19, 59}, {82, 16, 19, 59}, {82, 17, 19, 59}, {82, 18, 19, 59},
			{82, 19, 29, 59}, {82, 20, 29, 59}, {82, 21, 29, 59}, {82, 22, 29, 59},
			{82, 23, 39, 59}, {82, 24, 39, 59}, {82, 25, 39, 59}, {82, 26, 39, 59},
			{82, 23, 39, 59}, {82, 24, 39, 59}, {82, 25, 39, 59}, {82, 26, 39, 59},
			{82, 27, 39, 59}, {82, 28, 39, 59}, {82, 29, 39, 59}, {82, 30, 39, 59},
			{82, 31, 39, 59}, {82, 32, 39, 59}, {82, 33, 39, 59}, {82, 34, 39, 59},
			{82, 35, 39, 59}, {82, 36, 39, 59}, {82, 37, 45, 59}, {82, 38, 39, 59},
			{82, 39, 39, 59}, {82, 40, 39, 59}, {82, 41, 42, 59}, {82, 42, 39, 56},
			{82, 43, 39, 59}, {82, 44, 39, 59}, {82, 45, 39, 59}, {82, 46, 39, 50},
		},
	}
	bodies = []testBody{
		body1, body2, body3, body4, bodysplit, body6, body7,
	}
)