Method assert_log_lines

Lib/test/test_logging.py:169–185

Match the collected log lines against the regular expression self.expected_log_pat, and compare the extracted group values to the expected_values list of tuples.

(self, expected_values, stream=None, pat=None)

        threading_helper.threading_cleanup(*self._threading_key)

    def assert_log_lines(self, expected_values, stream=None, pat=None):
        """Match the collected log lines against the regular expression
        self.expected_log_pat, and compare the extracted group values to
        the expected_values list of tuples."""
        stream = stream or self.stream
        pat = re.compile(pat or self.expected_log_pat)
        actual_lines = stream.getvalue().splitlines()
        self.assertEqual(len(actual_lines), len(expected_values))
        for actual, expected in zip(actual_lines, expected_values):
            match = pat.search(actual)
            if not match:
                self.fail("Log line does not match expected pattern:\n" +
                            actual)
            self.assertEqual(tuple(match.groups()), expected)
        s = stream.read()
        if s:
            self.fail("Remaining output at end of log stream:\n" + s)

    def next_message(self):
        """Generate a message consisting solely of an auto-incrementing