Reject manifest 2 earlier to make pushes faster

test/registry_tests.py

@@ -1090,6 +1090,25 @@ class V1RegistryTests(V1RegistryPullMixin, V1RegistryPushMixin, RegistryTestsMix
 class V2RegistryTests(V2RegistryPullMixin, V2RegistryPushMixin, RegistryTestsMixin,
                       RegistryTestCaseMixin, LiveServerTestCase):
   """ Tests for V2 registry. """
+  def test_invalid_manifest_type(self):
+    namespace = 'devtable'
+    repository = 'somerepo'
+    tag_name = 'sometag'
+
+    repo_name = _get_repo_name(namespace, repository)
+
+    self.v2_ping()
+    self.do_auth('devtable', 'password', namespace, repository, scopes=['push', 'pull'])
+
+    # Build a fake manifest.
+    builder = SignedManifestBuilder(namespace, repository, tag_name)
+    builder.add_layer('sha256:' + hashlib.sha256('invalid').hexdigest(), json.dumps({'id': 'foo'}))
+    manifest = builder.build(_JWK)
+
+    self.conduct('PUT', '/v2/%s/manifests/%s' % (repo_name, tag_name),
+                 data=manifest.bytes, expected_code=415,
+                 headers={'Content-Type': 'application/vnd.docker.distribution.manifest.v2+json'},
+                 auth='jwt')
 
   def test_invalid_blob(self):
     namespace = 'devtable'