package image // import "github.com/docker/docker/image" import ( "fmt" "runtime" "testing" "github.com/docker/docker/layer" "github.com/opencontainers/go-digest" "gotest.tools/assert" "gotest.tools/assert/cmp" ) func TestRestore(t *testing.T) { fs, cleanup := defaultFSStoreBackend(t) defer cleanup() id1, err := fs.Set([]byte(`{"comment": "abc", "rootfs": {"type": "layers"}}`)) assert.NilError(t, err) _, err = fs.Set([]byte(`invalid`)) assert.NilError(t, err) id2, err := fs.Set([]byte(`{"comment": "def", "rootfs": {"type": "layers", "diff_ids": ["2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"]}}`)) assert.NilError(t, err) err = fs.SetMetadata(id2, "parent", []byte(id1)) assert.NilError(t, err) mlgrMap := make(map[string]LayerGetReleaser) mlgrMap[runtime.GOOS] = &mockLayerGetReleaser{} is, err := NewImageStore(fs, mlgrMap) assert.NilError(t, err) assert.Check(t, cmp.Len(is.Map(), 2)) img1, err := is.Get(ID(id1)) assert.NilError(t, err) assert.Check(t, cmp.Equal(ID(id1), img1.computedID)) assert.Check(t, cmp.Equal(string(id1), img1.computedID.String())) img2, err := is.Get(ID(id2)) assert.NilError(t, err) assert.Check(t, cmp.Equal("abc", img1.Comment)) assert.Check(t, cmp.Equal("def", img2.Comment)) _, err = is.GetParent(ID(id1)) assert.ErrorContains(t, err, "failed to read metadata") p, err := is.GetParent(ID(id2)) assert.NilError(t, err) assert.Check(t, cmp.Equal(ID(id1), p)) children := is.Children(ID(id1)) assert.Check(t, cmp.Len(children, 1)) assert.Check(t, cmp.Equal(ID(id2), children[0])) assert.Check(t, cmp.Len(is.Heads(), 1)) sid1, err := is.Search(string(id1)[:10]) assert.NilError(t, err) assert.Check(t, cmp.Equal(ID(id1), sid1)) sid1, err = is.Search(digest.Digest(id1).Hex()[:6]) assert.NilError(t, err) assert.Check(t, cmp.Equal(ID(id1), sid1)) invalidPattern := digest.Digest(id1).Hex()[1:6] _, err = is.Search(invalidPattern) assert.ErrorContains(t, err, "No such image") } func TestAddDelete(t *testing.T) { is, cleanup := defaultImageStore(t) defer cleanup() id1, err := is.Create([]byte(`{"comment": "abc", "rootfs": {"type": "layers", "diff_ids": ["2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"]}}`)) assert.NilError(t, err) assert.Check(t, cmp.Equal(ID("sha256:8d25a9c45df515f9d0fe8e4a6b1c64dd3b965a84790ddbcc7954bb9bc89eb993"), id1)) img, err := is.Get(id1) assert.NilError(t, err) assert.Check(t, cmp.Equal("abc", img.Comment)) id2, err := is.Create([]byte(`{"comment": "def", "rootfs": {"type": "layers", "diff_ids": ["2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"]}}`)) assert.NilError(t, err) err = is.SetParent(id2, id1) assert.NilError(t, err) pid1, err := is.GetParent(id2) assert.NilError(t, err) assert.Check(t, cmp.Equal(pid1, id1)) _, err = is.Delete(id1) assert.NilError(t, err) _, err = is.Get(id1) assert.ErrorContains(t, err, "failed to get digest") _, err = is.Get(id2) assert.NilError(t, err) _, err = is.GetParent(id2) assert.ErrorContains(t, err, "failed to read metadata") } func TestSearchAfterDelete(t *testing.T) { is, cleanup := defaultImageStore(t) defer cleanup() id, err := is.Create([]byte(`{"comment": "abc", "rootfs": {"type": "layers"}}`)) assert.NilError(t, err) id1, err := is.Search(string(id)[:15]) assert.NilError(t, err) assert.Check(t, cmp.Equal(id1, id)) _, err = is.Delete(id) assert.NilError(t, err) _, err = is.Search(string(id)[:15]) assert.ErrorContains(t, err, "No such image") } func TestParentReset(t *testing.T) { is, cleanup := defaultImageStore(t) defer cleanup() id, err := is.Create([]byte(`{"comment": "abc1", "rootfs": {"type": "layers"}}`)) assert.NilError(t, err) id2, err := is.Create([]byte(`{"comment": "abc2", "rootfs": {"type": "layers"}}`)) assert.NilError(t, err) id3, err := is.Create([]byte(`{"comment": "abc3", "rootfs": {"type": "layers"}}`)) assert.NilError(t, err) assert.Check(t, is.SetParent(id, id2)) assert.Check(t, cmp.Len(is.Children(id2), 1)) assert.Check(t, is.SetParent(id, id3)) assert.Check(t, cmp.Len(is.Children(id2), 0)) assert.Check(t, cmp.Len(is.Children(id3), 1)) } func defaultImageStore(t *testing.T) (Store, func()) { fsBackend, cleanup := defaultFSStoreBackend(t) mlgrMap := make(map[string]LayerGetReleaser) mlgrMap[runtime.GOOS] = &mockLayerGetReleaser{} store, err := NewImageStore(fsBackend, mlgrMap) assert.NilError(t, err) return store, cleanup } func TestGetAndSetLastUpdated(t *testing.T) { store, cleanup := defaultImageStore(t) defer cleanup() id, err := store.Create([]byte(`{"comment": "abc1", "rootfs": {"type": "layers"}}`)) assert.NilError(t, err) updated, err := store.GetLastUpdated(id) assert.NilError(t, err) assert.Check(t, cmp.Equal(updated.IsZero(), true)) assert.Check(t, store.SetLastUpdated(id)) updated, err = store.GetLastUpdated(id) assert.NilError(t, err) assert.Check(t, cmp.Equal(updated.IsZero(), false)) } func TestStoreLen(t *testing.T) { store, cleanup := defaultImageStore(t) defer cleanup() expected := 10 for i := 0; i < expected; i++ { _, err := store.Create([]byte(fmt.Sprintf(`{"comment": "abc%d", "rootfs": {"type": "layers"}}`, i))) assert.NilError(t, err) } numImages := store.Len() assert.Equal(t, expected, numImages) assert.Equal(t, len(store.Map()), numImages) } type mockLayerGetReleaser struct{} func (ls *mockLayerGetReleaser) Get(layer.ChainID) (layer.Layer, error) { return nil, nil } func (ls *mockLayerGetReleaser) Release(layer.Layer) ([]layer.Metadata, error) { return nil, nil }