github.com/nguyentm83/docker@v1.5.0/graph/manifest_test.go (about)

     1  package graph
     2  
     3  import (
     4  	"encoding/json"
     5  	"os"
     6  	"testing"
     7  
     8  	"github.com/docker/docker/image"
     9  	"github.com/docker/docker/registry"
    10  	"github.com/docker/docker/utils"
    11  )
    12  
    13  const (
    14  	testManifestImageName    = "testapp"
    15  	testManifestImageID      = "d821b739e8834ec89ac4469266c3d11515da88fdcbcbdddcbcddb636f54fdde9"
    16  	testManifestImageIDShort = "d821b739e883"
    17  	testManifestTag          = "manifesttest"
    18  )
    19  
    20  func TestManifestTarsumCache(t *testing.T) {
    21  	tmp, err := utils.TestDirectory("")
    22  	if err != nil {
    23  		t.Fatal(err)
    24  	}
    25  	defer os.RemoveAll(tmp)
    26  	store := mkTestTagStore(tmp, t)
    27  	defer store.graph.driver.Cleanup()
    28  
    29  	archive, err := fakeTar()
    30  	if err != nil {
    31  		t.Fatal(err)
    32  	}
    33  	img := &image.Image{ID: testManifestImageID}
    34  	if err := store.graph.Register(img, archive); err != nil {
    35  		t.Fatal(err)
    36  	}
    37  	if err := store.Set(testManifestImageName, testManifestTag, testManifestImageID, false); err != nil {
    38  		t.Fatal(err)
    39  	}
    40  
    41  	if cs, err := img.GetCheckSum(store.graph.ImageRoot(testManifestImageID)); err != nil {
    42  		t.Fatal(err)
    43  	} else if cs != "" {
    44  		t.Fatalf("Non-empty checksum file after register")
    45  	}
    46  
    47  	// Generate manifest
    48  	payload, err := store.newManifest(testManifestImageName, testManifestImageName, testManifestTag)
    49  	if err != nil {
    50  		t.Fatal(err)
    51  	}
    52  
    53  	manifestChecksum, err := img.GetCheckSum(store.graph.ImageRoot(testManifestImageID))
    54  	if err != nil {
    55  		t.Fatal(err)
    56  	}
    57  
    58  	var manifest registry.ManifestData
    59  	if err := json.Unmarshal(payload, &manifest); err != nil {
    60  		t.Fatalf("error unmarshalling manifest: %s", err)
    61  	}
    62  
    63  	if len(manifest.FSLayers) != 1 {
    64  		t.Fatalf("Unexpected number of layers, expecting 1: %d", len(manifest.FSLayers))
    65  	}
    66  
    67  	if manifest.FSLayers[0].BlobSum != manifestChecksum {
    68  		t.Fatalf("Unexpected blob sum, expecting %q, got %q", manifestChecksum, manifest.FSLayers[0].BlobSum)
    69  	}
    70  
    71  	if len(manifest.History) != 1 {
    72  		t.Fatalf("Unexpected number of layer history, expecting 1: %d", len(manifest.History))
    73  	}
    74  
    75  	v1compat, err := img.RawJson()
    76  	if err != nil {
    77  		t.Fatal(err)
    78  	}
    79  	if manifest.History[0].V1Compatibility != string(v1compat) {
    80  		t.Fatalf("Unexpected json value\nExpected:\n%s\nActual:\n%s", v1compat, manifest.History[0].V1Compatibility)
    81  	}
    82  }