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// 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)
}
}
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