fix(Registry): Improve get image manifest

Signed-off-by: James Hart <[email protected]>

Author: jhart1685

ibm_container_registry/container_registry_v1.py

@@ -504,7 +504,7 @@ def get_image_manifest(self,
                endpoint to review images that are in the registry.
         :param dict headers: A `dict` containing the request headers
         :return: A `DetailedResponse` containing the result, headers and HTTP status code.
-        :rtype: DetailedResponse
+        :rtype: DetailedResponse with `dict` result
         """
 
         if image is None:

test/integration/test_container_registry_v1.py

@@ -172,6 +172,8 @@ def test_get_image_manifest(self):
         )
 
         assert get_image_manifest_response.get_status_code() == 200
+        image_manifest = get_image_manifest_response.get_result()
+        assert image_manifest.get("schemaVersion") == 2
 
     @needscredentials
     def test_get_messages(self):

test/unit/test_container_registry_v1.py

@@ -682,8 +682,11 @@ def test_get_image_manifest_all_params(self):
         """
         # Set up mock
         url = self.preprocess_url(base_url + '/api/v1/images/testString/manifest')
+        mock_response = '{"mapKey": {"anyKey": "anyValue"}}'
         responses.add(responses.GET,
                       url,
+                      body=mock_response,
+                      content_type='application/json',
                       status=200)
 
         # Set up parameter values
@@ -707,8 +710,11 @@ def test_get_image_manifest_value_error(self):
         """
         # Set up mock
         url = self.preprocess_url(base_url + '/api/v1/images/testString/manifest')
+        mock_response = '{"mapKey": {"anyKey": "anyValue"}}'
         responses.add(responses.GET,
                       url,
+                      body=mock_response,
+                      content_type='application/json',
                       status=200)
 
         # Set up parameter values