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/*
Copyright The containerd Authors.
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 zstdchunked
import (
"context"
"testing"
"runtime/debug"
"github.com/containerd/containerd/images"
"github.com/containerd/containerd/images/converter"
"github.com/containerd/containerd/platforms"
"github.com/containerd/stargz-snapshotter/estargz"
"github.com/containerd/stargz-snapshotter/estargz/zstdchunked"
"github.com/containerd/stargz-snapshotter/util/testutil"
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
)
// TestLayerConvertFunc tests zstd:chunked conversion.
// TestLayerConvertFunc is a pure unit test that does not need the daemon to be running.
func TestLayerConvertFunc(t *testing.T) {
ctx := context.Background()
desc, cs, err := testutil.EnsureHello(ctx)
if err != nil {
t.Fatal(err)
}
lcf := LayerConvertFunc(estargz.WithPrioritizedFiles([]string{"hello"}))
docker2oci := true
platformMC := platforms.DefaultStrict()
cf := converter.DefaultIndexConvertFunc(lcf, docker2oci, platformMC)
newDesc, err := cf(ctx, cs, *desc)
if err != nil {
t.Log(string(debug.Stack()))
t.Fatal(err)
}
metadata := make(map[string]string)
mt := make(map[string]struct{})
handler := func(hCtx context.Context, hDesc ocispec.Descriptor) ([]ocispec.Descriptor, error) {
mt[hDesc.MediaType] = struct{}{}
for k, v := range hDesc.Annotations {
if k == estargz.TOCJSONDigestAnnotation ||
k == zstdchunked.ManifestChecksumAnnotation ||
k == zstdchunked.ManifestPositionAnnotation {
metadata[k] = v
}
}
return nil, nil
}
handlers := images.Handlers(
images.ChildrenHandler(cs),
images.HandlerFunc(handler),
)
if err := images.Walk(ctx, handlers, *newDesc); err != nil {
t.Fatal(err)
}
if _, ok := mt[ocispec.MediaTypeImageLayerZstd]; !ok {
t.Errorf("mediatype %q is not created", ocispec.MediaTypeImageLayerZstd)
}
if _, ok := metadata[estargz.TOCJSONDigestAnnotation]; !ok {
t.Errorf("%q is not set", estargz.TOCJSONDigestAnnotation)
}
if _, ok := metadata[zstdchunked.ManifestChecksumAnnotation]; !ok {
t.Errorf("%q is not set", zstdchunked.ManifestChecksumAnnotation)
}
if _, ok := metadata[zstdchunked.ManifestPositionAnnotation]; !ok {
t.Errorf("%q is not set", zstdchunked.ManifestPositionAnnotation)
}
}
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