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
python-3.x unit-testing
asked Nov 12 '18 at 9:46
clemlaflemme
1,603719
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
python-3.x unit-testing
asked Nov 12 '18 at 9:46
clemlaflemme
1,603719
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
python-3.x unit-testing
asked Nov 12 '18 at 9:46
clemlaflemme
1,603719
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
python-3.x unit-testing
asked Nov 12 '18 at 9:46
clemlaflemme
1,603719
asked Nov 12 '18 at 9:46
clemlaflemme
1,603719
edited Nov 12 '18 at 9:58
asked Nov 12 '18 at 9:46
clemlaflemme
1,603719
asked Nov 12 '18 at 9:46
clemlaflemme
1,603719
asked Nov 12 '18 at 9:46
clemlaflemme
1,603719
1,603719
add a comment |
add a comment |
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