Fix api error when 2fa enabled

tests/api/test_serializers.py

@@ -0,0 +1,23 @@
+from mock import patch
+
+from seahub.test_utils import BaseTestCase
+from seahub.api2.serializers import AuthTokenSerializer
+
+
+class AuthTokenSerializerTest(BaseTestCase):
+    def test_validate(self):
+        s = AuthTokenSerializer(data={
+            'username': self.user.username,
+            'password': self.user_password,
+        }, context={'request': self.fake_request})
+        assert s.is_valid() is True
+
+    @patch('seahub.api2.serializers.has_two_factor_auth')
+    def test_two_factor_auth(self, mock_has_two_factor_auth):
+        mock_has_two_factor_auth.return_value = True
+
+        s = AuthTokenSerializer(data={
+            'username': self.user.username,
+            'password': self.user_password,
+        }, context={'request': self.fake_request})
+        assert s.is_valid() is True