// Copyright 2020 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 partial_test import ( "testing" v1 "github.com/google/go-containerregistry/pkg/v1" "github.com/google/go-containerregistry/pkg/v1/empty" "github.com/google/go-containerregistry/pkg/v1/mutate" "github.com/google/go-containerregistry/pkg/v1/partial" "github.com/google/go-containerregistry/pkg/v1/random" "github.com/google/go-containerregistry/pkg/v1/types" ) func TestFindManifests(t *testing.T) { ii, err := random.Index(100, 5, 6) // random image of 6 manifests, each having 5 layers of size 100 if err != nil { t.Fatal("could not create random index:", err) } m, _ := ii.IndexManifest() digest := m.Manifests[0].Digest matcher := func(desc v1.Descriptor) bool { return desc.Digest != digest } descriptors, err := partial.FindManifests(ii, matcher) expected := len(m.Manifests) - 1 switch { case err != nil: t.Error("unexpected error:", err) case len(descriptors) != expected: t.Errorf("failed on manifests, actual %d, expected %d", len(descriptors), expected) } } func TestFindImages(t *testing.T) { // create our imageindex with which to work ii, err := random.Index(100, 5, 6) // random image of 6 manifests, each having 5 layers of size 100 if err != nil { t.Fatal("could not create random index:", err) } m, _ := ii.IndexManifest() digest := m.Manifests[0].Digest matcher := func(desc v1.Descriptor) bool { return desc.Digest != digest } images, err := partial.FindImages(ii, matcher) expected := len(m.Manifests) - 1 switch { case err != nil: t.Error("unexpected error:", err) case len(images) != expected: t.Errorf("failed on images, actual %d, expected %d", len(images), expected) } } func TestFindIndexes(t *testing.T) { // there is no utility to generate an index of indexes, so we need to create one // base index var ( indexCount = 5 imageCount = 7 ) base := empty.Index // we now have 5 indexes and 5 images, so wrap them into a single index adds := []mutate.IndexAddendum{} for i := 0; i < indexCount; i++ { ii, err := random.Index(100, 1, 1) if err != nil { t.Fatalf("%d: unable to create random index: %v", i, err) } adds = append(adds, mutate.IndexAddendum{ Add: ii, Descriptor: v1.Descriptor{ MediaType: types.OCIImageIndex, }, }) } for i := 0; i < imageCount; i++ { img, err := random.Image(100, 1) if err != nil { t.Fatalf("%d: unable to create random image: %v", i, err) } adds = append(adds, mutate.IndexAddendum{ Add: img, Descriptor: v1.Descriptor{ MediaType: types.OCIManifestSchema1, }, }) } // just see if it finds all of the indexes matcher := func(desc v1.Descriptor) bool { return true } index := mutate.AppendManifests(base, adds...) idxes, err := partial.FindIndexes(index, matcher) switch { case err != nil: t.Error("unexpected error:", err) case len(idxes) != indexCount: t.Errorf("failed on index, actual %d, expected %d", len(idxes), indexCount) } }