Fix RetriableHttp

infra_libs/test/httplib2_utils_test.py

Index: infra_libs/test/httplib2_utils_test.py
diff --git a/infra_libs/test/httplib2_utils_test.py b/infra_libs/test/httplib2_utils_test.py
index 5529fc0226821433f15218f2176c7a689a6c0c45..9e32bc40402c1e5aefd8d29b9d574af3ab0b3acf 100644
--- a/infra_libs/test/httplib2_utils_test.py
+++ b/infra_libs/test/httplib2_utils_test.py
@@ -138,6 +138,13 @@ class RetriableHttplib2Test(unittest.TestCase):
 
   _MOCK_REQUEST = mock.call('http://foo/', 'GET', None)
 
+  def test_authorize(self):
+    http = infra_libs.RetriableHttp(httplib2.Http())
+    creds = infra_libs.get_signed_jwt_assertion_credentials(
+      'valid_creds.json',
+      service_accounts_creds_root=DATA_DIR)
+    creds.authorize(http)
+
   def test_delegate_get_attr(self):
     """RetriableHttp should delegate getting attribute except request() to
        Http"""