fix: pass kwargs through in 'from_service_account_json' (#109)

Also, pin 'googleapis-common-protos' for Python 2.7 tests.

Closes #108.

google/cloud/client.py

@@ -106,7 +106,7 @@ def from_service_account_json(cls, json_credentials_path, *args, **kwargs):
         with io.open(json_credentials_path, "r", encoding="utf-8") as json_fi:
             credentials_info = json.load(json_fi)
 
-        return cls.from_service_account_info(credentials_info)
+        return cls.from_service_account_info(credentials_info, *args, **kwargs)
 
 
 class Client(_ClientFactoryMixin):

testing/constraints-2.7.txt

@@ -1,2 +1,3 @@
 google-api-core==1.21.0
+googleapis-common-protos<1.53.0
 six==1.12.0

tests/unit/test_client.py

@@ -420,17 +420,16 @@ def test_constructor_explicit_unicode(self):
     def _from_service_account_info_helper(self, project=None):
         klass = self._get_target_class()
 
-        info = {"dummy": "value", "valid": "json"}
+        default_project = "eye-d-of-project"
+        info = {"dummy": "value", "valid": "json", "project_id": default_project}
         kwargs = {}
 
         if project is None:
-            expected_project = "eye-d-of-project"
+            expected_project = default_project
         else:
             expected_project = project
             kwargs["project"] = project
 
-        info["project_id"] = expected_project
-
         constructor_patch = mock.patch(
             "google.oauth2.service_account.Credentials.from_service_account_info",
             return_value=_make_credentials(),
@@ -451,18 +450,45 @@ def test_from_service_account_info(self):
     def test_from_service_account_info_with_project(self):
         self._from_service_account_info_helper(project="prah-jekt")
 
+    def test_from_service_account_info_with_posarg(self):
+        class Derived(self._get_target_class()):
+            def __init__(self, required, **kwargs):
+                super(Derived, self).__init__(**kwargs)
+                self.required = required
+
+        project = "eye-d-of-project"
+        info = {"dummy": "value", "valid": "json", "project_id": project}
+
+        # Mock both the file opening and the credentials constructor.
+        constructor_patch = mock.patch(
+            "google.oauth2.service_account.Credentials.from_service_account_info",
+            return_value=_make_credentials(),
+        )
+
+        with constructor_patch as constructor:
+            client_obj = Derived.from_service_account_info(info, "REQUIRED")
+
+        self.assertIsInstance(client_obj, Derived)
+        self.assertIs(client_obj._credentials, constructor.return_value)
+        self.assertIsNone(client_obj._http_internal)
+        self.assertEqual(client_obj.project, project)
+        self.assertEqual(client_obj.required, "REQUIRED")
+
+        # Check that mocks were called as expected.
+        constructor.assert_called_once_with(info)
+
     def _from_service_account_json_helper(self, project=None):
         from google.cloud import _helpers
 
         klass = self._get_target_class()
 
-        info = {"dummy": "value", "valid": "json"}
+        default_project = "eye-d-of-project"
+        info = {"dummy": "value", "valid": "json", "project_id": default_project}
         if project is None:
             expected_project = "eye-d-of-project"
         else:
             expected_project = project
 
-        info["project_id"] = expected_project
         # Mock both the file opening and the credentials constructor.
         json_fi = io.StringIO(_helpers._bytes_to_unicode(json.dumps(info)))
         file_open_patch = mock.patch("io.open", return_value=json_fi)
@@ -492,3 +518,38 @@ def test_from_service_account_json(self):
 
     def test_from_service_account_json_project_set(self):
         self._from_service_account_json_helper(project="prah-jekt")
+
+    def test_from_service_account_json_with_posarg(self):
+        from google.cloud import _helpers
+
+        class Derived(self._get_target_class()):
+            def __init__(self, required, **kwargs):
+                super(Derived, self).__init__(**kwargs)
+                self.required = required
+
+        project = "eye-d-of-project"
+        info = {"dummy": "value", "valid": "json", "project_id": project}
+
+        # Mock both the file opening and the credentials constructor.
+        json_fi = io.StringIO(_helpers._bytes_to_unicode(json.dumps(info)))
+        file_open_patch = mock.patch("io.open", return_value=json_fi)
+        constructor_patch = mock.patch(
+            "google.oauth2.service_account.Credentials.from_service_account_info",
+            return_value=_make_credentials(),
+        )
+
+        with file_open_patch as file_open:
+            with constructor_patch as constructor:
+                client_obj = Derived.from_service_account_json(
+                    mock.sentinel.filename, "REQUIRED"
+                )
+
+        self.assertIsInstance(client_obj, Derived)
+        self.assertIs(client_obj._credentials, constructor.return_value)
+        self.assertIsNone(client_obj._http_internal)
+        self.assertEqual(client_obj.project, project)
+        self.assertEqual(client_obj.required, "REQUIRED")
+
+        # Check that mocks were called as expected.
+        file_open.assert_called_once_with(mock.sentinel.filename, "r", encoding="utf-8")
+        constructor.assert_called_once_with(info)