test_qrcode.py 文件源码

def test_print_ascii_stdout(self):
        qr = qrcode.QRCode()
        stdout_encoding = sys.stdout.encoding
        with mock.patch('sys.stdout') as fake_stdout:
            # Python 2.6 needs sys.stdout.encoding to be a real string.
            sys.stdout.encoding = stdout_encoding
            fake_stdout.isatty.return_value = None
            self.assertRaises(OSError, qr.print_ascii, tty=True)
            self.assertTrue(fake_stdout.isatty.called)