How to specify the type of a unittest.mock.sentinel?

I am using unittest.mock.sentinel to provide dumb values to my test functions and then assert calls.

I'd like to be able to specify the type of the sentinel so that it passes type checking in the methods.

MWE:

import collections

from unittest.mock import sentinel



def fun(x):

    if not isinstance(x, collections.Iterable):

        raise TypeError('x should be iterable')

    pass



def test_fun_pass_if_x_is_instance_iterable():

# this does not work and raise because sentinel is not iterable

    assert fun(sentinel.x) is None

EDIT

I have tried to do sentinel.x = collections.Iterable() but got the error:

TypeError: Can't instantiate abstract class Iterable with abstract methods __iter__

So far I can do sentinel.x = tuple() or sentinel.x = list() for instance, but these are special case of an iterable

edited Nov 12 '18 at 9:58

asked Nov 12 '18 at 9:46

clemlaflemme

1,608719

add a comment |

I am using unittest.mock.sentinel to provide dumb values to my test functions and then assert calls.

I'd like to be able to specify the type of the sentinel so that it passes type checking in the methods.

MWE:

import collections

from unittest.mock import sentinel



def fun(x):

    if not isinstance(x, collections.Iterable):

        raise TypeError('x should be iterable')

    pass



def test_fun_pass_if_x_is_instance_iterable():

# this does not work and raise because sentinel is not iterable

    assert fun(sentinel.x) is None

EDIT

I have tried to do sentinel.x = collections.Iterable() but got the error:

TypeError: Can't instantiate abstract class Iterable with abstract methods __iter__

So far I can do sentinel.x = tuple() or sentinel.x = list() for instance, but these are special case of an iterable

edited Nov 12 '18 at 9:58

asked Nov 12 '18 at 9:46

clemlaflemme

1,608719

add a comment |

I am using unittest.mock.sentinel to provide dumb values to my test functions and then assert calls.

I'd like to be able to specify the type of the sentinel so that it passes type checking in the methods.

MWE:

import collections

from unittest.mock import sentinel



def fun(x):

    if not isinstance(x, collections.Iterable):

        raise TypeError('x should be iterable')

    pass



def test_fun_pass_if_x_is_instance_iterable():

# this does not work and raise because sentinel is not iterable

    assert fun(sentinel.x) is None

EDIT

I have tried to do sentinel.x = collections.Iterable() but got the error:

TypeError: Can't instantiate abstract class Iterable with abstract methods __iter__

So far I can do sentinel.x = tuple() or sentinel.x = list() for instance, but these are special case of an iterable

edited Nov 12 '18 at 9:58

asked Nov 12 '18 at 9:46

clemlaflemme

1,608719

I am using unittest.mock.sentinel to provide dumb values to my test functions and then assert calls.

I'd like to be able to specify the type of the sentinel so that it passes type checking in the methods.

MWE:

import collections

from unittest.mock import sentinel



def fun(x):

    if not isinstance(x, collections.Iterable):

        raise TypeError('x should be iterable')

    pass



def test_fun_pass_if_x_is_instance_iterable():

# this does not work and raise because sentinel is not iterable

    assert fun(sentinel.x) is None

EDIT

I have tried to do sentinel.x = collections.Iterable() but got the error:

TypeError: Can't instantiate abstract class Iterable with abstract methods __iter__

So far I can do sentinel.x = tuple() or sentinel.x = list() for instance, but these are special case of an iterable

python-3.x unit-testing

edited Nov 12 '18 at 9:58

asked Nov 12 '18 at 9:46

clemlaflemme

1,608719

edited Nov 12 '18 at 9:58

asked Nov 12 '18 at 9:46

clemlaflemme

1,608719

edited Nov 12 '18 at 9:58

asked Nov 12 '18 at 9:46

clemlaflemme

1,608719

asked Nov 12 '18 at 9:46

clemlaflemme

1,608719

asked Nov 12 '18 at 9:46

clemlaflemme

1,608719

add a comment |

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How to specify the type of a unittest.mock.sentinel?

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