import getpass import os import unittest from io import StringIO from unittest import mock from test import support try: import termios except ImportError: termios = None try: import pwd except ImportError: pwd = None @mock.patch('os.environ') class GetpassGetuserTest(unittest.TestCase): def test_username_takes_username_from_env(self, environ): expected_name = 'some_name' environ.get.return_value = expected_name self.assertEqual(expected_name, getpass.getuser()) def test_username_priorities_of_env_values(self, environ): environ.get.return_value = None try: getpass.getuser() except ImportError: # in case there's no pwd module pass self.assertEqual( environ.get.call_args_list, [mock.call(x) for x in ('LOGNAME', 'USER', 'LNAME', 'USERNAME')]) def test_username_falls_back_to_pwd(self, environ): expected_name = 'some_name' environ.get.return_value = None if pwd: with mock.patch('os.getuid') as uid, \ mock.patch('pwd.getpwuid') as getpw: uid.return_value = 42 getpw.return_value = [expected_name] self.assertEqual(expected_name, getpass.getuser()) getpw.assert_called_once_with(42) else: self.assertRaises(ImportError, getpass.getuser) class GetpassRawinputTest(unittest.TestCase): def test_flushes_stream_after_prompt(self): # see issue 1703 stream = mock.Mock(spec=StringIO) input = StringIO('input_string') getpass._raw_input('some_prompt', stream, input=input) stream.flush.assert_called_once_with() def test_uses_stderr_as_default(self): input = StringIO('input_string') prompt = 'some_prompt' with mock.patch('sys.stderr') as stderr: getpass._raw_input(prompt, input=input) stderr.write.assert_called_once_with(prompt) @mock.patch('sys.stdin') def test_uses_stdin_as_default_input(self, mock_input): mock_input.readline.return_value = 'input_string' getpass._raw_input(stream=StringIO()) mock_input.readline.assert_called_once_with() def test_raises_on_empty_input(self): input = StringIO('') self.assertRaises(EOFError, getpass._raw_input, input=input) def test_trims_trailing_newline(self): input = StringIO('test\n') self.assertEqual('test', getpass._raw_input(input=input)) # Some of these tests are a bit white-box. The functional requirement is that # the password input be taken directly from the tty, and that it not be echoed # on the screen, unless we are falling back to stderr/stdin. # Some of these might run on platforms without termios, but play it safe. @unittest.skipUnless(termios, 'tests require system with termios') class UnixGetpassTest(unittest.TestCase): def test_uses_tty_directly(self): with mock.patch('os.open') as open, \ mock.patch('os.fdopen'): # 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) def test_resets_termios(self): with mock.patch('os.open') as open, \ mock.patch('os.fdopen'), \ 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('os.fdopen') as fdopen, \ mock.patch('termios.tcgetattr'), \ mock.patch('termios.tcsetattr') as tcsetattr, \ mock.patch('getpass.fallback_getpass') as fallback: open.return_value = 3 fdopen.return_value = StringIO() tcsetattr.side_effect = termios.error getpass.unix_getpass() fallback.assert_called_once_with('Password: ', fdopen.return_value) def test_flushes_stream_after_input(self): # issue 7208 with mock.patch('os.open') as open, \ mock.patch('os.fdopen'), \ 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()) if __name__ == "__main__": unittest.main()