Update unit tests for non-UTC windows environments

tests/conftest.py

@@ -6,7 +6,6 @@
 import shutil
 import subprocess
 import sys
-import time
 from contextlib import ExitStack, contextmanager
 from pathlib import Path
 from typing import (
@@ -658,16 +657,6 @@ def mock_server() -> Iterator[MockServer]:
         yield test_server
 
 
-@pytest.fixture
-def utc() -> Iterator[None]:
-    # time.tzset() is not implemented on some platforms, e.g. Windows.
-    tzset = getattr(time, "tzset", lambda: None)
-    with patch.dict(os.environ, {"TZ": "UTC"}):
-        tzset()
-        yield
-    tzset()
-
-
 @pytest.fixture
 def proxy(request: pytest.FixtureRequest) -> str:
     return request.config.getoption("proxy")

tests/unit/test_base_command.py

@@ -1,5 +1,6 @@
 import logging
 import os
+import time
 from optparse import Values
 from pathlib import Path
 from typing import Callable, Iterator, List, NoReturn, Optional
@@ -15,8 +16,8 @@
 
 
 @pytest.fixture
-def fixed_time(utc: None) -> Iterator[None]:
-    with patch("time.time", lambda: 1547704837.040001):
+def fixed_time() -> Iterator[None]:
+    with patch("time.time", lambda: 1547704837.040001 + time.timezone):
         yield
 
 

tests/unit/test_logging.py

@@ -1,4 +1,5 @@
 import logging
+import time
 from threading import Thread
 from unittest.mock import patch
 
@@ -22,7 +23,7 @@ def make_record(self, msg: str, level_name: str) -> logging.LogRecord:
         level_number = getattr(logging, level_name)
         attrs = dict(
             msg=msg,
-            created=1547704837.040001,
+            created=1547704837.040001 + time.timezone,
             msecs=40,
             levelname=level_name,
             levelno=level_number,
@@ -41,7 +42,7 @@ def make_record(self, msg: str, level_name: str) -> logging.LogRecord:
             ("CRITICAL", "ERROR: hello\nworld"),
         ],
     )
-    def test_format(self, level_name: str, expected: str, utc: None) -> None:
+    def test_format(self, level_name: str, expected: str) -> None:
         """
         Args:
           level_name: a logging level name (e.g. "WARNING").
@@ -61,9 +62,7 @@ def test_format(self, level_name: str, expected: str, utc: None) -> None:
             ),
         ],
     )
-    def test_format_with_timestamp(
-        self, level_name: str, expected: str, utc: None
-    ) -> None:
+    def test_format_with_timestamp(self, level_name: str, expected: str) -> None:
         record = self.make_record("hello\nworld", level_name=level_name)
         f = IndentingFormatter(fmt="%(message)s", add_timestamp=True)
         assert f.format(record) == expected
@@ -76,7 +75,7 @@ def test_format_with_timestamp(
             ("CRITICAL", "DEPRECATION: hello\nworld"),
         ],
     )
-    def test_format_deprecated(self, level_name: str, expected: str, utc: None) -> None:
+    def test_format_deprecated(self, level_name: str, expected: str) -> None:
         """
         Test that logged deprecation warnings coming from deprecated()
         don't get another prefix.
@@ -88,7 +87,7 @@ def test_format_deprecated(self, level_name: str, expected: str, utc: None) -> N
         f = IndentingFormatter(fmt="%(message)s")
         assert f.format(record) == expected
 
-    def test_thread_safety_base(self, utc: None) -> None:
+    def test_thread_safety_base(self) -> None:
         record = self.make_record(
             "DEPRECATION: hello\nworld",
             level_name="WARNING",
@@ -105,7 +104,7 @@ def thread_function() -> None:
         thread.join()
         assert results[0] == results[1]
 
-    def test_thread_safety_indent_log(self, utc: None) -> None:
+    def test_thread_safety_indent_log(self) -> None:
         record = self.make_record(
             "DEPRECATION: hello\nworld",
             level_name="WARNING",