Python getpass 模块，unix_getpass() 实例源码

def test_uses_tty_directly(self):
        with mock.patch('os.open') as open, \
                mock.patch('io.FileIO') as fileio, \
                mock.patch('io.TextIOWrapper') as textio:
            # By setting open's return value to None the implementation will
            # skip code we don't care about in this test.  We can mock this out
            # fully if an alternate implementation works differently.
            open.return_value = None
            getpass.unix_getpass()
            open.assert_called_once_with('/dev/tty',
                                         os.O_RDWR | os.O_NOCTTY)
            fileio.assert_called_once_with(open.return_value, 'w+')
            textio.assert_called_once_with(fileio.return_value)

def test_resets_termios(self):
        with mock.patch('os.open') as open, \
                mock.patch('io.FileIO'), \
                mock.patch('io.TextIOWrapper'), \
                mock.patch('termios.tcgetattr') as tcgetattr, \
                mock.patch('termios.tcsetattr') as tcsetattr:
            open.return_value = 3
            fake_attrs = [255, 255, 255, 255, 255]
            tcgetattr.return_value = list(fake_attrs)
            getpass.unix_getpass()
            tcsetattr.assert_called_with(3, mock.ANY, fake_attrs)

def test_falls_back_to_fallback_if_termios_raises(self):
        with mock.patch('os.open') as open, \
                mock.patch('io.FileIO') as fileio, \
                mock.patch('io.TextIOWrapper') as textio, \
                mock.patch('termios.tcgetattr'), \
                mock.patch('termios.tcsetattr') as tcsetattr, \
                mock.patch('getpass.fallback_getpass') as fallback:
            open.return_value = 3
            fileio.return_value = BytesIO()
            tcsetattr.side_effect = termios.error
            getpass.unix_getpass()
            fallback.assert_called_once_with('Password: ',
                                             textio.return_value)

def test_flushes_stream_after_input(self):
        # issue 7208
        with mock.patch('os.open') as open, \
                mock.patch('io.FileIO'), \
                mock.patch('io.TextIOWrapper'), \
                mock.patch('termios.tcgetattr'), \
                mock.patch('termios.tcsetattr'):
            open.return_value = 3
            mock_stream = mock.Mock(spec=StringIO)
            getpass.unix_getpass(stream=mock_stream)
            mock_stream.flush.assert_called_with()

def test_falls_back_to_stdin(self):
        with mock.patch('os.open') as os_open, \
                mock.patch('sys.stdin', spec=StringIO) as stdin:
            os_open.side_effect = IOError
            stdin.fileno.side_effect = AttributeError
            with support.captured_stderr() as stderr:
                with self.assertWarns(getpass.GetPassWarning):
                    getpass.unix_getpass()
            stdin.readline.assert_called_once_with()
            self.assertIn('Warning', stderr.getvalue())
            self.assertIn('Password:', stderr.getvalue())

def test_uses_tty_directly(self):
        with mock.patch('os.open') as open, \
                mock.patch('io.FileIO') as fileio, \
                mock.patch('io.TextIOWrapper') as textio:
            # By setting open's return value to None the implementation will
            # skip code we don't care about in this test.  We can mock this out
            # fully if an alternate implementation works differently.
            open.return_value = None
            getpass.unix_getpass()
            open.assert_called_once_with('/dev/tty',
                                         os.O_RDWR | os.O_NOCTTY)
            fileio.assert_called_once_with(open.return_value, 'w+')
            textio.assert_called_once_with(fileio.return_value)

def test_resets_termios(self):
        with mock.patch('os.open') as open, \
                mock.patch('io.FileIO'), \
                mock.patch('io.TextIOWrapper'), \
                mock.patch('termios.tcgetattr') as tcgetattr, \
                mock.patch('termios.tcsetattr') as tcsetattr:
            open.return_value = 3
            fake_attrs = [255, 255, 255, 255, 255]
            tcgetattr.return_value = list(fake_attrs)
            getpass.unix_getpass()
            tcsetattr.assert_called_with(3, mock.ANY, fake_attrs)

def test_falls_back_to_fallback_if_termios_raises(self):
        with mock.patch('os.open') as open, \
                mock.patch('io.FileIO') as fileio, \
                mock.patch('io.TextIOWrapper') as textio, \
                mock.patch('termios.tcgetattr'), \
                mock.patch('termios.tcsetattr') as tcsetattr, \
                mock.patch('getpass.fallback_getpass') as fallback:
            open.return_value = 3
            fileio.return_value = BytesIO()
            tcsetattr.side_effect = termios.error
            getpass.unix_getpass()
            fallback.assert_called_once_with('Password: ',
                                             textio.return_value)

def test_flushes_stream_after_input(self):
        # issue 7208
        with mock.patch('os.open') as open, \
                mock.patch('io.FileIO'), \
                mock.patch('io.TextIOWrapper'), \
                mock.patch('termios.tcgetattr'), \
                mock.patch('termios.tcsetattr'):
            open.return_value = 3
            mock_stream = mock.Mock(spec=StringIO)
            getpass.unix_getpass(stream=mock_stream)
            mock_stream.flush.assert_called_with()

def test_falls_back_to_stdin(self):
        with mock.patch('os.open') as os_open, \
                mock.patch('sys.stdin', spec=StringIO) as stdin:
            os_open.side_effect = IOError
            stdin.fileno.side_effect = AttributeError
            with support.captured_stderr() as stderr:
                with self.assertWarns(getpass.GetPassWarning):
                    getpass.unix_getpass()
            stdin.readline.assert_called_once_with()
            self.assertIn('Warning', stderr.getvalue())
            self.assertIn('Password:', stderr.getvalue())