79 lines
2.3 KiB
Go
79 lines
2.3 KiB
Go
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package storage
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import (
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"io"
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"testing"
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"github.com/docker/distribution"
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"github.com/docker/distribution/context"
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"github.com/docker/distribution/digest"
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"github.com/docker/distribution/reference"
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"github.com/docker/distribution/testutil"
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)
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func TestLinkedBlobStoreCreateWithMountFrom(t *testing.T) {
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fooRepoName, _ := reference.ParseNamed("nm/foo")
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fooEnv := newManifestStoreTestEnv(t, fooRepoName, "thetag")
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ctx := context.Background()
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// Build up some test layers and add them to the manifest, saving the
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// readseekers for upload later.
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testLayers := map[digest.Digest]io.ReadSeeker{}
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for i := 0; i < 2; i++ {
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rs, ds, err := testutil.CreateRandomTarFile()
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if err != nil {
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t.Fatalf("unexpected error generating test layer file")
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}
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dgst := digest.Digest(ds)
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testLayers[digest.Digest(dgst)] = rs
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}
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// upload the layers to foo/bar
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for dgst, rs := range testLayers {
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wr, err := fooEnv.repository.Blobs(fooEnv.ctx).Create(fooEnv.ctx)
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if err != nil {
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t.Fatalf("unexpected error creating test upload: %v", err)
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}
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if _, err := io.Copy(wr, rs); err != nil {
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t.Fatalf("unexpected error copying to upload: %v", err)
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}
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if _, err := wr.Commit(fooEnv.ctx, distribution.Descriptor{Digest: dgst}); err != nil {
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t.Fatalf("unexpected error finishing upload: %v", err)
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}
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}
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// create another repository nm/bar
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barRepoName, _ := reference.ParseNamed("nm/bar")
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barRepo, err := fooEnv.registry.Repository(ctx, barRepoName)
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if err != nil {
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t.Fatalf("unexpected error getting repo: %v", err)
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}
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// cross-repo mount the test layers into a nm/bar
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for dgst := range testLayers {
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fooCanonical, _ := reference.WithDigest(fooRepoName, dgst)
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option := WithMountFrom(fooCanonical)
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// ensure we can instrospect it
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createOpts := distribution.CreateOptions{}
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if err := option.Apply(&createOpts); err != nil {
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t.Fatalf("failed to apply MountFrom option: %v", err)
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}
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if !createOpts.Mount.ShouldMount || createOpts.Mount.From.String() != fooCanonical.String() {
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t.Fatalf("unexpected create options: %#+v", createOpts.Mount)
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}
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_, err := barRepo.Blobs(ctx).Create(ctx, WithMountFrom(fooCanonical))
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if err == nil {
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t.Fatalf("unexpected non-error while mounting from %q: %v", fooRepoName.String(), err)
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}
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if _, ok := err.(distribution.ErrBlobMounted); !ok {
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t.Fatalf("expected ErrMountFrom error, not %T: %v", err, err)
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}
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}
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}
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