distribution/storage/manifest_test.go

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package storage
import (
"reflect"
"testing"
"github.com/docker/libtrust"
"github.com/docker/distribution/digest"
"github.com/docker/distribution/storagedriver/inmemory"
)
func TestManifestStorage(t *testing.T) {
driver := inmemory.New()
ms := &manifestStore{
driver: driver,
pathMapper: &pathMapper{
root: "/storage/testing",
version: storagePathVersion,
},
layerService: newMockedLayerService(),
}
name := "foo/bar"
tag := "thetag"
exists, err := ms.Exists(name, tag)
if err != nil {
t.Fatalf("unexpected error checking manifest existence: %v", err)
}
if exists {
t.Fatalf("manifest should not exist")
}
if _, err := ms.Get(name, tag); true {
switch err.(type) {
case ErrUnknownManifest:
break
default:
t.Fatalf("expected manifest unknown error: %#v", err)
}
}
manifest := Manifest{
Versioned: Versioned{
SchemaVersion: 1,
},
Name: name,
Tag: tag,
FSLayers: []FSLayer{
{
BlobSum: "asdf",
},
{
BlobSum: "qwer",
},
},
}
pk, err := libtrust.GenerateECP256PrivateKey()
if err != nil {
t.Fatalf("unexpected error generating private key: %v", err)
}
sm, err := manifest.Sign(pk)
if err != nil {
t.Fatalf("error signing manifest: %v", err)
}
err = ms.Put(name, tag, sm)
if err == nil {
t.Fatalf("expected errors putting manifest")
}
// TODO(stevvooe): We expect errors describing all of the missing layers.
ms.layerService.(*mockedExistenceLayerService).add(name, "asdf")
ms.layerService.(*mockedExistenceLayerService).add(name, "qwer")
if err = ms.Put(name, tag, sm); err != nil {
t.Fatalf("unexpected error putting manifest: %v", err)
}
exists, err = ms.Exists(name, tag)
if err != nil {
t.Fatalf("unexpected error checking manifest existence: %v", err)
}
if !exists {
t.Fatalf("manifest should exist")
}
fetchedManifest, err := ms.Get(name, tag)
if err != nil {
t.Fatalf("unexpected error fetching manifest: %v", err)
}
if !reflect.DeepEqual(fetchedManifest, sm) {
t.Fatalf("fetched manifest not equal: %#v != %#v", fetchedManifest, sm)
}
// Grabs the tags and check that this tagged manifest is present
tags, err := ms.Tags(name)
if err != nil {
t.Fatalf("unexpected error fetching tags: %v", err)
}
if len(tags) != 1 {
t.Fatalf("unexpected tags returned: %v", tags)
}
if tags[0] != tag {
t.Fatalf("unexpected tag found in tags: %v != %v", tags, []string{tag})
}
}
type layerKey struct {
name string
digest digest.Digest
}
type mockedExistenceLayerService struct {
exists map[layerKey]struct{}
}
func newMockedLayerService() *mockedExistenceLayerService {
return &mockedExistenceLayerService{
exists: make(map[layerKey]struct{}),
}
}
var _ LayerService = &mockedExistenceLayerService{}
func (mels *mockedExistenceLayerService) add(name string, digest digest.Digest) {
mels.exists[layerKey{name: name, digest: digest}] = struct{}{}
}
func (mels *mockedExistenceLayerService) remove(name string, digest digest.Digest) {
delete(mels.exists, layerKey{name: name, digest: digest})
}
func (mels *mockedExistenceLayerService) Exists(name string, digest digest.Digest) (bool, error) {
_, ok := mels.exists[layerKey{name: name, digest: digest}]
return ok, nil
}
func (mockedExistenceLayerService) Fetch(name string, digest digest.Digest) (Layer, error) {
panic("not implemented")
}
func (mockedExistenceLayerService) Upload(name string) (LayerUpload, error) {
panic("not implemented")
}
func (mockedExistenceLayerService) Resume(uuid string) (LayerUpload, error) {
panic("not implemented")
}