test: exercise manifest list backwards compat

Signed-off-by: Antonio Murdaca <[email protected]>

Author: runcom

schema/manifest_backwards_compatibility_test.go

@@ -42,6 +42,89 @@ func convertFormats(input string) string {
 	return out
 }
 
+func TestBackwardsCompatibilityManifestList(t *testing.T) {
+	for i, tt := range []struct {
+		manifest string
+		digest   string
+		fail     bool
+	}{
+		{
+			digest: "sha256:e588eb8123f2031a41f2e60bc27f30a4388e181e07410aff392f7dc96b585969",
+			manifest: `{
+   "schemaVersion": 2,
+   "mediaType": "application/vnd.docker.distribution.manifest.list.v2+json",
+   "manifests": [
+      {
+         "mediaType": "application/vnd.docker.distribution.manifest.v1+json",
+         "size": 2094,
+         "digest": "sha256:7820f9a86d4ad15a2c4f0c0e5479298df2aa7c2f6871288e2ef8546f3e7b6783",
+         "platform": {
+            "architecture": "ppc64le",
+            "os": "linux"
+         }
+      },
+      {
+         "mediaType": "application/vnd.docker.distribution.manifest.v1+json",
+         "size": 1922,
+         "digest": "sha256:ae1b0e06e8ade3a11267564a26e750585ba2259c0ecab59ab165ad1af41d1bdd",
+         "platform": {
+            "architecture": "amd64",
+            "os": "linux",
+            "features": [
+               "sse"
+            ]
+         }
+      },
+      {
+         "mediaType": "application/vnd.docker.distribution.manifest.v1+json",
+         "size": 2084,
+         "digest": "sha256:e4c0df75810b953d6717b8f8f28298d73870e8aa2a0d5e77b8391f16fdfbbbe2",
+         "platform": {
+            "architecture": "s390x",
+            "os": "linux"
+         }
+      },
+      {
+         "mediaType": "application/vnd.docker.distribution.manifest.v1+json",
+         "size": 2084,
+         "digest": "sha256:07ebe243465ef4a667b78154ae6c3ea46fdb1582936aac3ac899ea311a701b40",
+         "platform": {
+            "architecture": "arm",
+            "os": "linux",
+            "variant": "armv7"
+         }
+      },
+      {
+         "mediaType": "application/vnd.docker.distribution.manifest.v1+json",
+         "size": 2090,
+         "digest": "sha256:fb2fc0707b86dafa9959fe3d29e66af8787aee4d9a23581714be65db4265ad8a",
+         "platform": {
+            "architecture": "arm64",
+            "os": "linux",
+            "variant": "armv8"
+         }
+      }
+   ]
+}`,
+			fail: false,
+		},
+	} {
+		sum := sha256.Sum256([]byte(tt.manifest))
+		got := fmt.Sprintf("sha256:%s", hex.EncodeToString(sum[:]))
+		if tt.digest != got {
+			t.Errorf("test %d: expected digest %s but got %s", i, tt.digest, got)
+		}
+
+		manifest := convertFormats(tt.manifest)
+		r := strings.NewReader(manifest)
+		err := schema.MediaTypeManifestList.Validate(r)
+
+		if got := err != nil; tt.fail != got {
+			t.Errorf("test %d: expected validation failure %t but got %t, err %v", i, tt.fail, got, err)
+		}
+	}
+}
+
 func TestBackwardsCompatibilityManifest(t *testing.T) {
 	for i, tt := range []struct {
 		manifest string