def test_stdin_ignore(self):
        """test 'echo test | cowsay Hello, World!' printing 'Hello World!'"""
        output = self.run_command("echo test | cowsay Hello, World!", exitcode=0)
        self.assertIn("Hello, World!", output)
        self.assertNotIn("test", output)
test 'echo test | cowsay Hello, World!' printing 'Hello World!'
tests/misc/test_cowsay.py