Function test_log_file_mode_ini

testing/logging/test_reporting.py:814–852

(pytester: Pytester)

def test_log_file_mode_ini(pytester: Pytester) -> None:
    log_file = str(pytester.path.joinpath("pytest.log"))

    pytester.makeini(
        f"""
        [pytest]
        log_file={log_file}
        log_file_mode=a
        log_file_level=WARNING
        """
    )
    pytester.makepyfile(
        """
        import pytest
        import logging
        def test_log_file(request):
            plugin = request.config.pluginmanager.getplugin('logging-plugin')
            assert plugin.log_file_handler.level == logging.WARNING
            logging.getLogger('catchlog').info("This log message won't be shown")
            logging.getLogger('catchlog').warning("This log message will be shown")
            print('PASSED')
    """
    )

    with open(log_file, mode="w", encoding="utf-8") as wfh:
        wfh.write("A custom header\n")

    result = pytester.runpytest("-s")

    # fnmatch_lines does an assertion internally
    result.stdout.fnmatch_lines(["test_log_file_mode_ini.py PASSED"])

    assert result.ret == ExitCode.OK
    assert os.path.isfile(log_file)
    with open(log_file, encoding="utf-8") as rfh:
        contents = rfh.read()
        assert "A custom header" in contents
        assert "This log message will be shown" in contents
        assert "This log message won't be shown" not in contents


def test_log_file_ini_level(pytester: Pytester) -> None: