Method test_command_usage

Lib/test/test_tabnanny.py:332–336

Should display usage on no arguments.

(self)

            self.validate_cmd(file_path)

    def test_command_usage(self):
        """Should display usage on no arguments."""
        path = findfile('tabnanny.py')
        stderr = f"Usage: {path} [-v] file_or_directory ..."
        self.validate_cmd(stderr=stderr, expect_failure=True)

    def test_quiet_flag(self):
        """Should display less when quite mode is on."""