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import getpass
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import os
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import unittest
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from io import BytesIO, StringIO, TextIOWrapper
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from unittest import mock
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from test import support
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try:
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import termios
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except ImportError:
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termios = None
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try:
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import pwd
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except ImportError:
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pwd = None
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@mock.patch('os.environ')
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class GetpassGetuserTest(unittest.TestCase):
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def test_username_takes_username_from_env(self, environ):
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expected_name = 'some_name'
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environ.get.return_value = expected_name
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self.assertEqual(expected_name, getpass.getuser())
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def test_username_priorities_of_env_values(self, environ):
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environ.get.return_value = None
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try:
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getpass.getuser()
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except ImportError: # in case there's no pwd module
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pass
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self.assertEqual(
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environ.get.call_args_list,
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[mock.call(x) for x in ('LOGNAME', 'USER', 'LNAME', 'USERNAME')])
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def test_username_falls_back_to_pwd(self, environ):
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expected_name = 'some_name'
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environ.get.return_value = None
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if pwd:
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with mock.patch('os.getuid') as uid, \
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mock.patch('pwd.getpwuid') as getpw:
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uid.return_value = 42
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getpw.return_value = [expected_name]
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self.assertEqual(expected_name,
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getpass.getuser())
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getpw.assert_called_once_with(42)
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else:
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self.assertRaises(ImportError, getpass.getuser)
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class GetpassRawinputTest(unittest.TestCase):
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def test_flushes_stream_after_prompt(self):
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# see issue 1703
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stream = mock.Mock(spec=StringIO)
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input = StringIO('input_string')
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getpass._raw_input('some_prompt', stream, input=input)
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stream.flush.assert_called_once_with()
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def test_uses_stderr_as_default(self):
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input = StringIO('input_string')
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prompt = 'some_prompt'
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with mock.patch('sys.stderr') as stderr:
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getpass._raw_input(prompt, input=input)
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stderr.write.assert_called_once_with(prompt)
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@mock.patch('sys.stdin')
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def test_uses_stdin_as_default_input(self, mock_input):
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mock_input.readline.return_value = 'input_string'
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getpass._raw_input(stream=StringIO())
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mock_input.readline.assert_called_once_with()
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@mock.patch('sys.stdin')
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def test_uses_stdin_as_different_locale(self, mock_input):
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stream = TextIOWrapper(BytesIO(), encoding="ascii")
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mock_input.readline.return_value = "Hasło: "
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getpass._raw_input(prompt="Hasło: ",stream=stream)
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mock_input.readline.assert_called_once_with()
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def test_raises_on_empty_input(self):
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input = StringIO('')
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self.assertRaises(EOFError, getpass._raw_input, input=input)
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def test_trims_trailing_newline(self):
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input = StringIO('test\n')
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self.assertEqual('test', getpass._raw_input(input=input))
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# Some of these tests are a bit white-box. The functional requirement is that
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# the password input be taken directly from the tty, and that it not be echoed
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# on the screen, unless we are falling back to stderr/stdin.
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# Some of these might run on platforms without termios, but play it safe.
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@unittest.skipUnless(termios, 'tests require system with termios')
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class UnixGetpassTest(unittest.TestCase):
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def test_uses_tty_directly(self):
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with mock.patch('os.open') as open, \
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mock.patch('io.FileIO') as fileio, \
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mock.patch('io.TextIOWrapper') as textio:
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# By setting open's return value to None the implementation will
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# skip code we don't care about in this test. We can mock this out
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# fully if an alternate implementation works differently.
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open.return_value = None
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getpass.unix_getpass()
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open.assert_called_once_with('/dev/tty',
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os.O_RDWR | os.O_NOCTTY)
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fileio.assert_called_once_with(open.return_value, 'w+')
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textio.assert_called_once_with(fileio.return_value)
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def test_resets_termios(self):
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with mock.patch('os.open') as open, \
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mock.patch('io.FileIO'), \
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mock.patch('io.TextIOWrapper'), \
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mock.patch('termios.tcgetattr') as tcgetattr, \
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mock.patch('termios.tcsetattr') as tcsetattr:
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open.return_value = 3
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fake_attrs = [255, 255, 255, 255, 255]
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tcgetattr.return_value = list(fake_attrs)
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getpass.unix_getpass()
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tcsetattr.assert_called_with(3, mock.ANY, fake_attrs)
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def test_falls_back_to_fallback_if_termios_raises(self):
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with mock.patch('os.open') as open, \
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mock.patch('io.FileIO') as fileio, \
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mock.patch('io.TextIOWrapper') as textio, \
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mock.patch('termios.tcgetattr'), \
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mock.patch('termios.tcsetattr') as tcsetattr, \
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mock.patch('getpass.fallback_getpass') as fallback:
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open.return_value = 3
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fileio.return_value = BytesIO()
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tcsetattr.side_effect = termios.error
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getpass.unix_getpass()
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fallback.assert_called_once_with('Password: ',
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textio.return_value)
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def test_flushes_stream_after_input(self):
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# issue 7208
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with mock.patch('os.open') as open, \
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mock.patch('io.FileIO'), \
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mock.patch('io.TextIOWrapper'), \
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mock.patch('termios.tcgetattr'), \
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mock.patch('termios.tcsetattr'):
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open.return_value = 3
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mock_stream = mock.Mock(spec=StringIO)
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getpass.unix_getpass(stream=mock_stream)
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mock_stream.flush.assert_called_with()
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def test_falls_back_to_stdin(self):
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with mock.patch('os.open') as os_open, \
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mock.patch('sys.stdin', spec=StringIO) as stdin:
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os_open.side_effect = IOError
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stdin.fileno.side_effect = AttributeError
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with support.captured_stderr() as stderr:
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with self.assertWarns(getpass.GetPassWarning):
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getpass.unix_getpass()
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stdin.readline.assert_called_once_with()
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self.assertIn('Warning', stderr.getvalue())
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self.assertIn('Password:', stderr.getvalue())
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if __name__ == "__main__":
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unittest.main()
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