| package image |
| |
| import ( |
| "io/ioutil" |
| "os" |
| "testing" |
| |
| "github.com/docker/distribution/digest" |
| "github.com/docker/docker/layer" |
| ) |
| |
| func TestRestore(t *testing.T) { |
| tmpdir, err := ioutil.TempDir("", "images-fs-store") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.RemoveAll(tmpdir) |
| fs, err := NewFSStoreBackend(tmpdir) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| id1, err := fs.Set([]byte(`{"comment": "abc", "rootfs": {"type": "layers"}}`)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| _, err = fs.Set([]byte(`invalid`)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| id2, err := fs.Set([]byte(`{"comment": "def", "rootfs": {"type": "layers", "diff_ids": ["2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"]}}`)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| err = fs.SetMetadata(id2, "parent", []byte(id1)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| is, err := NewImageStore(fs, &mockLayerGetReleaser{}) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| imgs := is.Map() |
| if actual, expected := len(imgs), 2; actual != expected { |
| t.Fatalf("invalid images length, expected 2, got %q", len(imgs)) |
| } |
| |
| img1, err := is.Get(ID(id1)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| if actual, expected := img1.computedID, ID(id1); actual != expected { |
| t.Fatalf("invalid image ID: expected %q, got %q", expected, actual) |
| } |
| |
| if actual, expected := img1.computedID.String(), string(id1); actual != expected { |
| t.Fatalf("invalid image ID string: expected %q, got %q", expected, actual) |
| } |
| |
| img2, err := is.Get(ID(id2)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| if actual, expected := img1.Comment, "abc"; actual != expected { |
| t.Fatalf("invalid comment for image1: expected %q, got %q", expected, actual) |
| } |
| |
| if actual, expected := img2.Comment, "def"; actual != expected { |
| t.Fatalf("invalid comment for image2: expected %q, got %q", expected, actual) |
| } |
| |
| p, err := is.GetParent(ID(id1)) |
| if err == nil { |
| t.Fatal("expected error for getting parent") |
| } |
| |
| p, err = is.GetParent(ID(id2)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| if actual, expected := p, ID(id1); actual != expected { |
| t.Fatalf("invalid parent: expected %q, got %q", expected, actual) |
| } |
| |
| children := is.Children(ID(id1)) |
| if len(children) != 1 { |
| t.Fatalf("invalid children length: %q", len(children)) |
| } |
| if actual, expected := children[0], ID(id2); actual != expected { |
| t.Fatalf("invalid child for id1: expected %q, got %q", expected, actual) |
| } |
| |
| heads := is.Heads() |
| if actual, expected := len(heads), 1; actual != expected { |
| t.Fatalf("invalid images length: expected %q, got %q", expected, actual) |
| } |
| |
| sid1, err := is.Search(string(id1)[:10]) |
| if err != nil { |
| t.Fatal(err) |
| } |
| if actual, expected := sid1, ID(id1); actual != expected { |
| t.Fatalf("searched ID mismatch: expected %q, got %q", expected, actual) |
| } |
| |
| sid1, err = is.Search(digest.Digest(id1).Hex()[:6]) |
| if err != nil { |
| t.Fatal(err) |
| } |
| if actual, expected := sid1, ID(id1); actual != expected { |
| t.Fatalf("searched ID mismatch: expected %q, got %q", expected, actual) |
| } |
| |
| invalidPattern := digest.Digest(id1).Hex()[1:6] |
| _, err = is.Search(invalidPattern) |
| if err == nil { |
| t.Fatalf("expected search for %q to fail", invalidPattern) |
| } |
| |
| } |
| |
| func TestAddDelete(t *testing.T) { |
| tmpdir, err := ioutil.TempDir("", "images-fs-store") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.RemoveAll(tmpdir) |
| fs, err := NewFSStoreBackend(tmpdir) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| is, err := NewImageStore(fs, &mockLayerGetReleaser{}) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| id1, err := is.Create([]byte(`{"comment": "abc", "rootfs": {"type": "layers", "diff_ids": ["2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"]}}`)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| if actual, expected := id1, ID("sha256:8d25a9c45df515f9d0fe8e4a6b1c64dd3b965a84790ddbcc7954bb9bc89eb993"); actual != expected { |
| t.Fatalf("create ID mismatch: expected %q, got %q", expected, actual) |
| } |
| |
| img, err := is.Get(id1) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| if actual, expected := img.Comment, "abc"; actual != expected { |
| t.Fatalf("invalid comment in image: expected %q, got %q", expected, actual) |
| } |
| |
| id2, err := is.Create([]byte(`{"comment": "def", "rootfs": {"type": "layers", "diff_ids": ["2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"]}}`)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| err = is.SetParent(id2, id1) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| pid1, err := is.GetParent(id2) |
| if err != nil { |
| t.Fatal(err) |
| } |
| if actual, expected := pid1, id1; actual != expected { |
| t.Fatalf("invalid parent for image: expected %q, got %q", expected, actual) |
| } |
| |
| _, err = is.Delete(id1) |
| if err != nil { |
| t.Fatal(err) |
| } |
| _, err = is.Get(id1) |
| if err == nil { |
| t.Fatalf("expected get for deleted image %q to fail", id1) |
| } |
| _, err = is.Get(id2) |
| if err != nil { |
| t.Fatal(err) |
| } |
| pid1, err = is.GetParent(id2) |
| if err == nil { |
| t.Fatalf("expected parent check for image %q to fail, got %q", id2, pid1) |
| } |
| |
| } |
| |
| func TestSearchAfterDelete(t *testing.T) { |
| tmpdir, err := ioutil.TempDir("", "images-fs-store") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.RemoveAll(tmpdir) |
| fs, err := NewFSStoreBackend(tmpdir) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| is, err := NewImageStore(fs, &mockLayerGetReleaser{}) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| id, err := is.Create([]byte(`{"comment": "abc", "rootfs": {"type": "layers"}}`)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| id1, err := is.Search(string(id)[:15]) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| if actual, expected := id1, id; expected != actual { |
| t.Fatalf("wrong id returned from search: expected %q, got %q", expected, actual) |
| } |
| |
| if _, err := is.Delete(id); err != nil { |
| t.Fatal(err) |
| } |
| |
| if _, err := is.Search(string(id)[:15]); err == nil { |
| t.Fatal("expected search after deletion to fail") |
| } |
| } |
| |
| func TestParentReset(t *testing.T) { |
| tmpdir, err := ioutil.TempDir("", "images-fs-store") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.RemoveAll(tmpdir) |
| fs, err := NewFSStoreBackend(tmpdir) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| is, err := NewImageStore(fs, &mockLayerGetReleaser{}) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| id, err := is.Create([]byte(`{"comment": "abc1", "rootfs": {"type": "layers"}}`)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| id2, err := is.Create([]byte(`{"comment": "abc2", "rootfs": {"type": "layers"}}`)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| id3, err := is.Create([]byte(`{"comment": "abc3", "rootfs": {"type": "layers"}}`)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| if err := is.SetParent(id, id2); err != nil { |
| t.Fatal(err) |
| } |
| |
| ids := is.Children(id2) |
| if actual, expected := len(ids), 1; expected != actual { |
| t.Fatalf("wrong number of children: %d, got %d", expected, actual) |
| } |
| |
| if err := is.SetParent(id, id3); err != nil { |
| t.Fatal(err) |
| } |
| |
| ids = is.Children(id2) |
| if actual, expected := len(ids), 0; expected != actual { |
| t.Fatalf("wrong number of children after parent reset: %d, got %d", expected, actual) |
| } |
| |
| ids = is.Children(id3) |
| if actual, expected := len(ids), 1; expected != actual { |
| t.Fatalf("wrong number of children after parent reset: %d, got %d", expected, actual) |
| } |
| |
| } |
| |
| 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 |
| } |