def test_output_includes_runtime(self):
main(["euler", "p1"], self.output)
self.assertRegexpMatches(self.output.getvalue(), "\(\d+\.\d{3} secs\)")
def test_invalid_problem_number_reports_appropriate_error_message(self):
main(["euler", "invalid"], self.output)
self.assertIn("ERROR:", self.output.getvalue())
def test_missing_problem_number_gives_usage_message(self):
main(["euler"], self.output)
self.assertIn("usage:", self.output.getvalue())
def test_can_run_individual_problems_by_number(self):
main(["euler", "p1"], self.output)
self.assertIn("Problem p1:", self.output.getvalue())
