diff options
Diffstat (limited to 'pkg/v1/layout/image_test.go')
| -rw-r--r-- | pkg/v1/layout/image_test.go | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/pkg/v1/layout/image_test.go b/pkg/v1/layout/image_test.go new file mode 100644 index 0000000..3614920 --- /dev/null +++ b/pkg/v1/layout/image_test.go @@ -0,0 +1,181 @@ +// Copyright 2018 Google LLC All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package layout + +import ( + "path/filepath" + "testing" + + v1 "github.com/google/go-containerregistry/pkg/v1" + "github.com/google/go-containerregistry/pkg/v1/partial" + "github.com/google/go-containerregistry/pkg/v1/types" + "github.com/google/go-containerregistry/pkg/v1/validate" +) + +var ( + indexDigest = v1.Hash{ + Algorithm: "sha256", + Hex: "05f95b26ed10668b7183c1e2da98610e91372fa9f510046d4ce5812addad86b5", + } + manifestDigest = v1.Hash{ + Algorithm: "sha256", + Hex: "eebff607b1628d67459b0596643fc07de70d702eccf030f0bc7bb6fc2b278650", + } + configDigest = v1.Hash{ + Algorithm: "sha256", + Hex: "6e0b05049ed9c17d02e1a55e80d6599dbfcce7f4f4b022e3c673e685789c470e", + } + bogusDigest = v1.Hash{ + Algorithm: "sha256", + Hex: "deadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef", + } + customManifestDigest = v1.Hash{ + Algorithm: "sha256", + Hex: "b544f71ecd82372bc9a3c0dbef378abfd2734fe437df81ff6e242a0d720d8e3e", + } + bogusPath = filepath.Join("testdata", "does_not_exist") + testPath = filepath.Join("testdata", "test_index") + testPathOneImage = filepath.Join("testdata", "test_index_one_image") + testPathMediaType = filepath.Join("testdata", "test_index_media_type") + customMediaType types.MediaType = "application/tar+gzip" +) + +func TestImage(t *testing.T) { + lp, err := FromPath(testPath) + if err != nil { + t.Fatalf("FromPath() = %v", err) + } + img, err := lp.Image(manifestDigest) + if err != nil { + t.Fatalf("Image() = %v", err) + } + + if err := validate.Image(img); err != nil { + t.Errorf("validate.Image() = %v", err) + } + + mt, err := img.MediaType() + if err != nil { + t.Errorf("MediaType() = %v", err) + } else if got, want := mt, types.OCIManifestSchema1; got != want { + t.Errorf("MediaType(); want: %v got: %v", want, got) + } + + cfg, err := img.LayerByDigest(configDigest) + if err != nil { + t.Fatalf("LayerByDigest(%s) = %v", configDigest, err) + } + + cfgName, err := img.ConfigName() + if err != nil { + t.Fatalf("ConfigName() = %v", err) + } + + cfgDigest, err := cfg.Digest() + if err != nil { + t.Fatalf("cfg.Digest() = %v", err) + } + + if got, want := cfgDigest, cfgName; got != want { + t.Errorf("ConfigName(); want: %v got: %v", want, got) + } + + layers, err := img.Layers() + if err != nil { + t.Fatalf("img.Layers() = %v", err) + } + + mediaType, err := layers[0].MediaType() + if err != nil { + t.Fatalf("img.Layers() = %v", err) + } + + // Fixture is a DockerLayer + if got, want := mediaType, types.DockerLayer; got != want { + t.Fatalf("MediaType(); want: %q got: %q", want, got) + } + + if ok, err := partial.Exists(layers[0]); err != nil { + t.Fatal(err) + } else if got, want := ok, true; got != want { + t.Errorf("Exists() = %t != %t", got, want) + } +} + +func TestImageWithEmptyHash(t *testing.T) { + lp, err := FromPath(testPathOneImage) + if err != nil { + t.Fatalf("FromPath() = %v", err) + } + img, err := lp.Image(v1.Hash{}) + if err != nil { + t.Fatalf("Image() = %v", err) + } + + if err := validate.Image(img); err != nil { + t.Errorf("validate.Image() = %v", err) + } +} + +func TestImageErrors(t *testing.T) { + lp, err := FromPath(testPath) + if err != nil { + t.Fatalf("FromPath() = %v", err) + } + img, err := lp.Image(manifestDigest) + if err != nil { + t.Fatalf("Image() = %v", err) + } + + if _, err := img.LayerByDigest(bogusDigest); err == nil { + t.Errorf("LayerByDigest(%s) = nil, expected err", bogusDigest) + } + + if _, err := lp.Image(bogusDigest); err == nil { + t.Errorf("Image(%s) = nil, expected err", bogusDigest) + } + + if _, err := lp.Image(bogusDigest); err == nil { + t.Errorf("Image(%s, %s) = nil, expected err", bogusPath, bogusDigest) + } +} + +func TestImageCustomMediaType(t *testing.T) { + lp, err := FromPath(testPathMediaType) + if err != nil { + t.Fatalf("FromPath() = %v", err) + } + img, err := lp.Image(customManifestDigest) + if err != nil { + t.Fatalf("Image() = %v", err) + } + mt, err := img.MediaType() + if err != nil { + t.Errorf("MediaType() = %v", err) + } else if got, want := mt, types.OCIManifestSchema1; got != want { + t.Errorf("MediaType(); want: %v got: %v", want, got) + } + layers, err := img.Layers() + if err != nil { + t.Fatalf("img.Layers() = %v", err) + } + mediaType, err := layers[0].MediaType() + if err != nil { + t.Fatalf("img.Layers() = %v", err) + } + if got, want := mediaType, customMediaType; got != want { + t.Fatalf("MediaType(); want: %q got: %q", want, got) + } +} |