github.com/demonoid81/moby@v0.0.0-20200517203328-62dd8e17c460/volume/service/service_linux_test.go (about)

     1  package service
     2  
     3  import (
     4  	"context"
     5  	"io/ioutil"
     6  	"os"
     7  	"path/filepath"
     8  	"testing"
     9  
    10  	"github.com/demonoid81/moby/pkg/idtools"
    11  	"github.com/demonoid81/moby/volume"
    12  	volumedrivers "github.com/demonoid81/moby/volume/drivers"
    13  	"github.com/demonoid81/moby/volume/local"
    14  	"github.com/demonoid81/moby/volume/service/opts"
    15  	"github.com/demonoid81/moby/volume/testutils"
    16  	"gotest.tools/v3/assert"
    17  	is "gotest.tools/v3/assert/cmp"
    18  )
    19  
    20  func TestLocalVolumeSize(t *testing.T) {
    21  	t.Parallel()
    22  
    23  	ds := volumedrivers.NewStore(nil)
    24  	dir, err := ioutil.TempDir("", t.Name())
    25  	assert.NilError(t, err)
    26  	defer os.RemoveAll(dir)
    27  
    28  	l, err := local.New(dir, idtools.Identity{UID: os.Getuid(), GID: os.Getegid()})
    29  	assert.NilError(t, err)
    30  	assert.Assert(t, ds.Register(l, volume.DefaultDriverName))
    31  	assert.Assert(t, ds.Register(testutils.NewFakeDriver("fake"), "fake"))
    32  
    33  	service, cleanup := newTestService(t, ds)
    34  	defer cleanup()
    35  
    36  	ctx := context.Background()
    37  	v1, err := service.Create(ctx, "test1", volume.DefaultDriverName, opts.WithCreateReference("foo"))
    38  	assert.NilError(t, err)
    39  	v2, err := service.Create(ctx, "test2", volume.DefaultDriverName)
    40  	assert.NilError(t, err)
    41  	_, err = service.Create(ctx, "test3", "fake")
    42  	assert.NilError(t, err)
    43  
    44  	data := make([]byte, 1024)
    45  	err = ioutil.WriteFile(filepath.Join(v1.Mountpoint, "data"), data, 0644)
    46  	assert.NilError(t, err)
    47  	err = ioutil.WriteFile(filepath.Join(v2.Mountpoint, "data"), data[:1], 0644)
    48  	assert.NilError(t, err)
    49  
    50  	ls, err := service.LocalVolumesSize(ctx)
    51  	assert.NilError(t, err)
    52  	assert.Assert(t, is.Len(ls, 2))
    53  
    54  	for _, v := range ls {
    55  		switch v.Name {
    56  		case "test1":
    57  			assert.Assert(t, is.Equal(v.UsageData.Size, int64(len(data))))
    58  			assert.Assert(t, is.Equal(v.UsageData.RefCount, int64(1)))
    59  		case "test2":
    60  			assert.Assert(t, is.Equal(v.UsageData.Size, int64(len(data[:1]))))
    61  			assert.Assert(t, is.Equal(v.UsageData.RefCount, int64(0)))
    62  		default:
    63  			t.Fatalf("got unexpected volume: %+v", v)
    64  		}
    65  	}
    66  }