[7.4.x] Ensure logging tests always cleanup after themselves

testing/logging/test_fixture.py

@@ -1,5 +1,7 @@
 # mypy: disable-error-code="attr-defined"
+# mypy: disallow-untyped-defs
 import logging
+from typing import Iterator
 
 import pytest
 from _pytest.logging import caplog_records_key
@@ -9,8 +11,8 @@
 sublogger = logging.getLogger(__name__ + ".baz")
 
 
-@pytest.fixture
-def cleanup_disabled_logging():
+@pytest.fixture(autouse=True)
+def cleanup_disabled_logging() -> Iterator[None]:
     """Simple fixture that ensures that a test doesn't disable logging.
 
     This is necessary because ``logging.disable()`` is global, so a test disabling logging
@@ -27,7 +29,7 @@ def test_fixture_help(pytester: Pytester) -> None:
     result.stdout.fnmatch_lines(["*caplog*"])
 
 
-def test_change_level(caplog):
+def test_change_level(caplog: pytest.LogCaptureFixture) -> None:
     caplog.set_level(logging.INFO)
     logger.debug("handler DEBUG level")
     logger.info("handler INFO level")
@@ -42,7 +44,7 @@ def test_change_level(caplog):
     assert "CRITICAL" in caplog.text
 
 
-def test_change_level_logging_disabled(caplog, cleanup_disabled_logging):
+def test_change_level_logging_disabled(caplog: pytest.LogCaptureFixture) -> None:
     logging.disable(logging.CRITICAL)
     assert logging.root.manager.disable == logging.CRITICAL
     caplog.set_level(logging.WARNING)
@@ -85,9 +87,7 @@ def test2(caplog):
     result.stdout.no_fnmatch_line("*log from test2*")
 
 
-def test_change_disabled_level_undo(
-    pytester: Pytester, cleanup_disabled_logging
-) -> None:
+def test_change_disabled_level_undo(pytester: Pytester) -> None:
     """Ensure that '_force_enable_logging' in 'set_level' is undone after the end of the test.
 
     Tests the logging output themselves (affected by disabled logging level).
@@ -144,7 +144,7 @@ def test3(caplog):
     result.assert_outcomes(passed=3)
 
 
-def test_with_statement(caplog):
+def test_with_statement(caplog: pytest.LogCaptureFixture) -> None:
     with caplog.at_level(logging.INFO):
         logger.debug("handler DEBUG level")
         logger.info("handler INFO level")
@@ -159,7 +159,7 @@ def test_with_statement(caplog):
     assert "CRITICAL" in caplog.text
 
 
-def test_with_statement_logging_disabled(caplog, cleanup_disabled_logging):
+def test_with_statement_logging_disabled(caplog: pytest.LogCaptureFixture) -> None:
     logging.disable(logging.CRITICAL)
     assert logging.root.manager.disable == logging.CRITICAL
     with caplog.at_level(logging.WARNING):
@@ -198,8 +198,8 @@ def test_with_statement_logging_disabled(caplog, cleanup_disabled_logging):
     ],
 )
 def test_force_enable_logging_level_string(
-    caplog, cleanup_disabled_logging, level_str, expected_disable_level
-):
+    caplog: pytest.LogCaptureFixture, level_str: str, expected_disable_level: int
+) -> None:
     """Test _force_enable_logging using a level string.
 
     ``expected_disable_level`` is one level below ``level_str`` because the disabled log level
@@ -218,15 +218,15 @@ def test_force_enable_logging_level_string(
     assert test_logger.manager.disable == expected_disable_level
 
 
-def test_log_access(caplog):
+def test_log_access(caplog: pytest.LogCaptureFixture) -> None:
     caplog.set_level(logging.INFO)
     logger.info("boo %s", "arg")
     assert caplog.records[0].levelname == "INFO"
     assert caplog.records[0].msg == "boo %s"
     assert "boo arg" in caplog.text
 
 
-def test_messages(caplog):
+def test_messages(caplog: pytest.LogCaptureFixture) -> None:
     caplog.set_level(logging.INFO)
     logger.info("boo %s", "arg")
     logger.info("bar %s\nbaz %s", "arg1", "arg2")
@@ -247,22 +247,22 @@ def test_messages(caplog):
     assert "Exception" not in caplog.messages[-1]
 
 
-def test_record_tuples(caplog):
+def test_record_tuples(caplog: pytest.LogCaptureFixture) -> None:
     caplog.set_level(logging.INFO)
     logger.info("boo %s", "arg")
 
     assert caplog.record_tuples == [(__name__, logging.INFO, "boo arg")]
 
 
-def test_unicode(caplog):
+def test_unicode(caplog: pytest.LogCaptureFixture) -> None:
     caplog.set_level(logging.INFO)
     logger.info("bū")
     assert caplog.records[0].levelname == "INFO"
     assert caplog.records[0].msg == "bū"
     assert "bū" in caplog.text
 
 
-def test_clear(caplog):
+def test_clear(caplog: pytest.LogCaptureFixture) -> None:
     caplog.set_level(logging.INFO)
     logger.info("bū")
     assert len(caplog.records)
@@ -273,15 +273,19 @@ def test_clear(caplog):
 
 
 @pytest.fixture
-def logging_during_setup_and_teardown(caplog):
+def logging_during_setup_and_teardown(
+    caplog: pytest.LogCaptureFixture,
+) -> Iterator[None]:
     caplog.set_level("INFO")
     logger.info("a_setup_log")
     yield
     logger.info("a_teardown_log")
     assert [x.message for x in caplog.get_records("teardown")] == ["a_teardown_log"]
 
 
-def test_caplog_captures_for_all_stages(caplog, logging_during_setup_and_teardown):
+def test_caplog_captures_for_all_stages(
+    caplog: pytest.LogCaptureFixture, logging_during_setup_and_teardown: None
+) -> None:
     assert not caplog.records
     assert not caplog.get_records("call")
     logger.info("a_call_log")
@@ -290,25 +294,31 @@ def test_caplog_captures_for_all_stages(caplog, logging_during_setup_and_teardow
     assert [x.message for x in caplog.get_records("setup")] == ["a_setup_log"]
 
     # This reaches into private API, don't use this type of thing in real tests!
-    assert set(caplog._item.stash[caplog_records_key]) == {"setup", "call"}
+    caplog_records = caplog._item.stash[caplog_records_key]
+    assert set(caplog_records) == {"setup", "call"}
 
 
-def test_clear_for_call_stage(caplog, logging_during_setup_and_teardown):
+def test_clear_for_call_stage(
+    caplog: pytest.LogCaptureFixture, logging_during_setup_and_teardown: None
+) -> None:
     logger.info("a_call_log")
     assert [x.message for x in caplog.get_records("call")] == ["a_call_log"]
     assert [x.message for x in caplog.get_records("setup")] == ["a_setup_log"]
-    assert set(caplog._item.stash[caplog_records_key]) == {"setup", "call"}
+    caplog_records = caplog._item.stash[caplog_records_key]
+    assert set(caplog_records) == {"setup", "call"}
 
     caplog.clear()
 
     assert caplog.get_records("call") == []
     assert [x.message for x in caplog.get_records("setup")] == ["a_setup_log"]
-    assert set(caplog._item.stash[caplog_records_key]) == {"setup", "call"}
+    caplog_records = caplog._item.stash[caplog_records_key]
+    assert set(caplog_records) == {"setup", "call"}
 
     logging.info("a_call_log_after_clear")
     assert [x.message for x in caplog.get_records("call")] == ["a_call_log_after_clear"]
     assert [x.message for x in caplog.get_records("setup")] == ["a_setup_log"]
-    assert set(caplog._item.stash[caplog_records_key]) == {"setup", "call"}
+    caplog_records = caplog._item.stash[caplog_records_key]
+    assert set(caplog_records) == {"setup", "call"}
 
 
 def test_ini_controls_global_log_level(pytester: Pytester) -> None: