Function TestCopyWithPlatform

pkg/gcrane/copy_test.go:208–272

TestCopyWithPlatform verifies that Copy with WithPlatform resolves the multi-platform source index to the single requested manifest at the dst. Regression test for #2059.

(t *testing.T)

// multi-platform source index to the single requested manifest at the dst.
// Regression test for #2059.
func TestCopyWithPlatform(t *testing.T) {
	s := httptest.NewServer(registry.New())
	defer s.Close()
	u, err := url.Parse(s.URL)
	if err != nil {
		t.Fatal(err)
	}
	src := path.Join(u.Host, "test/gcrane") + ":multi"
	dst := path.Join(u.Host, "test/gcrane/copy") + ":amd64"

	amdImg, err := random.Image(1024, 2)
	if err != nil {
		t.Fatal(err)
	}
	armImg, err := random.Image(1024, 2)
	if err != nil {
		t.Fatal(err)
	}

	idx := mutate.AppendManifests(empty.Index,
		mutate.IndexAddendum{
			Add: amdImg,
			Descriptor: v1.Descriptor{
				Platform: &v1.Platform{OS: "linux", Architecture: "amd64"},
			},
		},
		mutate.IndexAddendum{
			Add: armImg,
			Descriptor: v1.Descriptor{
				Platform: &v1.Platform{OS: "linux", Architecture: "arm64"},
			},
		},
	)

	srcRef, err := name.ParseReference(src)
	if err != nil {
		t.Fatal(err)
	}
	if err := remote.WriteIndex(srcRef, idx); err != nil {
		t.Fatal(err)
	}

	if err := Copy(src, dst, WithPlatform(&v1.Platform{OS: "linux", Architecture: "amd64"})); err != nil {
		t.Fatal(err)
	}

	dstRef, err := name.ParseReference(dst)
	if err != nil {
		t.Fatal(err)
	}
	desc, err := remote.Get(dstRef)
	if err != nil {
		t.Fatal(err)
	}
	if desc.MediaType.IsIndex() {
		t.Fatalf("dst is an index (%s); expected a single-platform manifest", desc.MediaType)
	}
	amdDigest, err := amdImg.Digest()