From 072283e3853260142143a56b8e604493f2bc8913 Mon Sep 17 00:00:00 2001
From: Chris Wilcox <crwilcox@google.com>
Date: Fri, 25 Sep 2020 14:12:35 -0700
Subject: [PATCH] refactor: port #561 split 'with_quota_project' into separate
 base class

---
 google/auth/_credentials_async.py     | 4 ++++
 tests_async/test__default_async.py    | 2 +-
 tests_async/test_credentials_async.py | 6 ------
 3 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/google/auth/_credentials_async.py b/google/auth/_credentials_async.py
index 1aafe0b17..d4d4e2c0e 100644
--- a/google/auth/_credentials_async.py
+++ b/google/auth/_credentials_async.py
@@ -70,6 +70,10 @@ async def before_request(self, request, method, url, headers):
         self.apply(headers)
 
 
+class CredentialsWithQuotaProject(credentials.CredentialsWithQuotaProject):
+    """Abstract base for credentials supporting ``with_quota_project`` factory"""
+
+
 class AnonymousCredentials(credentials.AnonymousCredentials, Credentials):
     """Credentials that do not provide any authentication information.
 
diff --git a/tests_async/test__default_async.py b/tests_async/test__default_async.py
index 75774d987..21fc92e92 100644
--- a/tests_async/test__default_async.py
+++ b/tests_async/test__default_async.py
@@ -28,7 +28,7 @@
 import google.oauth2.credentials
 from tests import test__default as test_default
 
-MOCK_CREDENTIALS = mock.Mock(spec=credentials.Credentials)
+MOCK_CREDENTIALS = mock.Mock(spec=credentials.CredentialsWithQuotaProject)
 MOCK_CREDENTIALS.with_quota_project.return_value = MOCK_CREDENTIALS
 
 LOAD_FILE_PATCH = mock.patch(
diff --git a/tests_async/test_credentials_async.py b/tests_async/test_credentials_async.py
index 43c46ac5a..5a5de8518 100644
--- a/tests_async/test_credentials_async.py
+++ b/tests_async/test_credentials_async.py
@@ -118,12 +118,6 @@ def test_anonymous_credentials_before_request():
     assert headers == {}
 
 
-def test_anonymous_credentials_with_quota_project():
-    with pytest.raises(ValueError):
-        anon = credentials.AnonymousCredentials()
-        anon.with_quota_project("project-foo")
-
-
 class ReadOnlyScopedCredentialsImpl(credentials.ReadOnlyScoped, CredentialsImpl):
     @property
     def requires_scopes(self):