request_test_lib.py: Move from mock to unittest.mock.
This commit changes 'Mock.assert_called()' to 'assert Mock.called'.
This is needed because in unittest.mock, assert_called() is only
supported in Python >=3.6.
@@ -2,7 +2,7 @@ import json
import requests
from contextlib import contextmanager
-from mock import patch
+from unittest.mock import patch
from typing import Any, Dict, List
@@ -77,7 +77,7 @@ def mock_request_exception():
# type: () -> Any
def assert_mock_called(mock_result):
# type: (Any) -> None
- mock_result.assert_called()
+ assert mock_result.called
with patch('requests.get') as mock_get:
mock_get.return_value = True
