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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()
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