package image // import "github.com/docker/docker/image" import ( "runtime" "testing" "github.com/docker/docker/internal/testutil" "github.com/docker/docker/layer" "github.com/opencontainers/go-digest" "github.com/stretchr/testify/assert" ) func TestRestore(t *testing.T) { fs, cleanup := defaultFSStoreBackend(t) defer cleanup() id1, err := fs.Set([]byte(`{"comment": "abc", "rootfs": {"type": "layers"}}`)) assert.NoError(t, err) _, err = fs.Set([]byte(`invalid`)) assert.NoError(t, err) id2, err := fs.Set([]byte(`{"comment": "def", "rootfs": {"type": "layers", "diff_ids": ["2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"]}}`)) assert.NoError(t, err) err = fs.SetMetadata(id2, "parent", []byte(id1)) assert.NoError(t, err) mlgrMap := make(map[string]LayerGetReleaser) mlgrMap[runtime.GOOS] = &mockLayerGetReleaser{} is, err := NewImageStore(fs, mlgrMap) assert.NoError(t, err) assert.Len(t, is.Map(), 2) img1, err := is.Get(ID(id1)) assert.NoError(t, err) assert.Equal(t, ID(id1), img1.computedID) assert.Equal(t, string(id1), img1.computedID.String()) img2, err := is.Get(ID(id2)) assert.NoError(t, err) assert.Equal(t, "abc", img1.Comment) assert.Equal(t, "def", img2.Comment) _, err = is.GetParent(ID(id1)) testutil.ErrorContains(t, err, "failed to read metadata") p, err := is.GetParent(ID(id2)) assert.NoError(t, err) assert.Equal(t, ID(id1), p) children := is.Children(ID(id1)) assert.Len(t, children, 1) assert.Equal(t, ID(id2), children[0]) assert.Len(t, is.Heads(), 1) sid1, err := is.Search(string(id1)[:10]) assert.NoError(t, err) assert.Equal(t, ID(id1), sid1) sid1, err = is.Search(digest.Digest(id1).Hex()[:6]) assert.NoError(t, err) assert.Equal(t, ID(id1), sid1) invalidPattern := digest.Digest(id1).Hex()[1:6] _, err = is.Search(invalidPattern) testutil.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.NoError(t, err) assert.Equal(t, ID("sha256:8d25a9c45df515f9d0fe8e4a6b1c64dd3b965a84790ddbcc7954bb9bc89eb993"), id1) img, err := is.Get(id1) assert.NoError(t, err) assert.Equal(t, "abc", img.Comment) id2, err := is.Create([]byte(`{"comment": "def", "rootfs": {"type": "layers", "diff_ids": ["2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"]}}`)) assert.NoError(t, err) err = is.SetParent(id2, id1) assert.NoError(t, err) pid1, err := is.GetParent(id2) assert.NoError(t, err) assert.Equal(t, pid1, id1) _, err = is.Delete(id1) assert.NoError(t, err) _, err = is.Get(id1) testutil.ErrorContains(t, err, "failed to get digest") _, err = is.Get(id2) assert.NoError(t, err) _, err = is.GetParent(id2) testutil.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.NoError(t, err) id1, err := is.Search(string(id)[:15]) assert.NoError(t, err) assert.Equal(t, id1, id) _, err = is.Delete(id) assert.NoError(t, err) _, err = is.Search(string(id)[:15]) testutil.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.NoError(t, err) id2, err := is.Create([]byte(`{"comment": "abc2", "rootfs": {"type": "layers"}}`)) assert.NoError(t, err) id3, err := is.Create([]byte(`{"comment": "abc3", "rootfs": {"type": "layers"}}`)) assert.NoError(t, err) assert.NoError(t, is.SetParent(id, id2)) assert.Len(t, is.Children(id2), 1) assert.NoError(t, is.SetParent(id, id3)) assert.Len(t, is.Children(id2), 0) assert.Len(t, 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.NoError(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.NoError(t, err) updated, err := store.GetLastUpdated(id) assert.NoError(t, err) assert.Equal(t, updated.IsZero(), true) assert.NoError(t, store.SetLastUpdated(id)) updated, err = store.GetLastUpdated(id) assert.NoError(t, err) assert.Equal(t, updated.IsZero(), false) } 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 }