Method test_check_output

Lib/test/test_subprocess.py:191–203

(self)

        self.assertEqual(c.exception.returncode, 47)

    def test_check_output(self):
        # check_output() function with zero return code
        output = subprocess.check_output(
                [sys.executable, "-c", "print('BDFL')"])
        self.assertIn(b'BDFL', output)

        with self.assertRaisesRegex(ValueError,
                "stdout argument not allowed, it will be overridden"):
            subprocess.check_output([], stdout=None)

        with self.assertRaisesRegex(ValueError,
                "check argument not allowed, it will be overridden"):
            subprocess.check_output([], check=False)

    def test_check_output_nonzero(self):
        # check_call() function with non-zero return code