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devel / comp.lang.python.announce / [Python-announce] pytest-when 1.0.3

[Python-announce] pytest-when 1.0.3

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From: iam@zhukovgreen.pro (Artem Zhukov)
Newsgroups: comp.lang.python.announce
Subject: [Python-announce] pytest-when 1.0.3
Date: Fri, 19 May 2023 18:38:19 +0200
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by: Artem Zhukov - Fri, 19 May 2023 16:38 UTC

Hi all,
happy to announce a better developer experience with pytest-when fixture.
With pytest-mock you can define the complex mocking behavior via natural interface:
```
when(some_object, "attribute").called_with(1, 2).then_return("mocked")
```
In this case the some_object.attribute(1, 2) == "mocked". But if it will be called with any other
arguments, it will return what it is suppose to return.

Project GitHub:
https://github.com/zhukovgreen/pytest-when
zhukovgreen/pytest-when: Pytest plugin for more readable mocking
github.com
Support python>=3.8 and tested until 3.11

Small example from the docs:
# class which we're going to mock in the test
class Klass1:
def some_method(
self,
arg1: str,
arg2: int,
*,
kwarg1: str,
kwarg2: str,
) -> str:
return "Not mocked"

def test_should_properly_patch_calls(when):
when(Klass1, "some_method").called_with(
"a",
when.markers.any,
kwarg1="b",
kwarg2=when.markers.any,
).then_return("Mocked")
assert (
Klass1().some_method(
"a",
1,
kwarg1="b",
kwarg2="c",
)
== "Mocked"
)
assert (
Klass1().some_method(
"not mocked param",
1,
kwarg1="b",
kwarg2="c",
)
== "Not mocked"
)
# if you need to patch a function
def test_patch_a_function(when):
when(example_module, "some_normal_function").called_with(
"a",
when.markers.any,
kwarg1="b",
kwarg2=when.markers.any,
).then_return("Mocked")
assert (
example_module.some_normal_function(
"a",
1,
kwarg1="b",
kwarg2="c",
)
== "Mocked"
)
assert (
example_module.some_normal_function(
"not mocked param",
1,
kwarg1="b",
kwarg2="c",
)
== "Not mocked"
)

Thank you for any feedback
--
zhukovgreen,
Data Engineer @Paylocity
https://github.com/zhukovgreen

Subject	Author
[Python-announce] pytest-when 1.0.3	Artem Zhukov