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// Copyright (c) 2018-2023, Sylabs Inc. All rights reserved.
// This software is licensed under a 3-clause BSD license. Please consult the
// LICENSE.md file distributed with the sources of this project regarding your
// rights to use or distribute this software.
package ociimage
import (
"runtime"
"testing"
"github.com/containers/image/v5/types"
ggcrv1 "github.com/google/go-containerregistry/pkg/v1"
ggcrempty "github.com/google/go-containerregistry/pkg/v1/empty"
ggcrmutate "github.com/google/go-containerregistry/pkg/v1/mutate"
ggcrrandom "github.com/google/go-containerregistry/pkg/v1/random"
"github.com/opencontainers/go-digest"
"github.com/sylabs/singularity/v4/internal/pkg/ociplatform"
"gotest.tools/v3/assert"
)
func imageWithManifest(t *testing.T) (rawManifest []byte, imageDigest digest.Digest) {
im, err := ggcrrandom.Image(1024, 3)
if err != nil {
t.Fatal(err)
}
id, err := im.Digest()
if err != nil {
t.Fatal(err)
}
rm, err := im.RawManifest()
if err != nil {
t.Fatal(err)
}
return rm, digest.Digest(id.String())
}
func imageWithIndex(t *testing.T) (rawIndex []byte, imageDigest digest.Digest) {
im, err := ggcrrandom.Image(1024, 3)
if err != nil {
t.Fatal(err)
}
ii := ggcrmutate.AppendManifests(ggcrempty.Index, ggcrmutate.IndexAddendum{
Add: im,
Descriptor: ggcrv1.Descriptor{
Platform: &ggcrv1.Platform{
OS: runtime.GOOS,
Architecture: runtime.GOARCH,
Variant: ociplatform.CPUVariant(),
},
},
})
id, err := im.Digest()
if err != nil {
t.Fatal(err)
}
ri, err := ii.RawManifest()
if err != nil {
t.Fatal(err)
}
return ri, digest.Digest(id.String())
}
func Test_digestFromManifestOrIndex(t *testing.T) {
manifest, manifestImageDigest := imageWithManifest(t)
index, indexImageDigest := imageWithIndex(t)
tests := []struct {
name string
sysCtx *types.SystemContext
manifestOrIndex []byte
want digest.Digest
wantErr bool
}{
{
name: "ImageManifestDefaultSysCtx",
sysCtx: &types.SystemContext{},
manifestOrIndex: manifest,
want: manifestImageDigest,
wantErr: false,
},
{
name: "ImageIndexDefaultSysCtx",
sysCtx: &types.SystemContext{},
manifestOrIndex: index,
want: indexImageDigest,
wantErr: false,
},
{
name: "ImageIndexExplicitSysCtx",
sysCtx: &types.SystemContext{
OSChoice: runtime.GOOS,
ArchitectureChoice: runtime.GOARCH,
VariantChoice: ociplatform.CPUVariant(),
},
manifestOrIndex: index,
want: indexImageDigest,
wantErr: false,
},
{
name: "ImageIndexBadOS",
sysCtx: &types.SystemContext{
OSChoice: "myOS",
ArchitectureChoice: runtime.GOARCH,
VariantChoice: ociplatform.CPUVariant(),
},
manifestOrIndex: index,
want: "",
wantErr: true,
},
{
name: "ImageIndexBadArch",
sysCtx: &types.SystemContext{
OSChoice: runtime.GOOS,
ArchitectureChoice: "myArch",
VariantChoice: ociplatform.CPUVariant(),
},
manifestOrIndex: index,
want: "",
wantErr: true,
},
{
name: "ImageIndexBadVariant",
sysCtx: &types.SystemContext{
OSChoice: runtime.GOOS,
ArchitectureChoice: runtime.GOARCH,
VariantChoice: "myVariant",
},
manifestOrIndex: index,
want: "",
wantErr: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := digestFromManifestOrIndex(tt.sysCtx, tt.manifestOrIndex)
assert.Equal(t, tt.want, got)
if (err != nil) != tt.wantErr {
t.Errorf("digestFromManifestOrIndex() error = %v, wantErr %v", err, tt.wantErr)
return
}
})
}
}
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