def test_multiline_message(self):
        actual = make_usage_error("foo\nfoo", "--help")
        self.assertStartsWith(actual, "Command-line usage error:")

# TODO: add more tests for this.
Check the formatting of a multi-line message
dataset/ETHPy150Open cjerdonek/open-rcv/openrcv/test/scripts/test_run.py/MakeUsageErrorTest.test_multiline_message