Update assert.rst

[alanmehio]

pytest 8.3.2
Python 3.12.1
os : Window 10 Enterprise

[alanmehio]

Should be verified on Linux also . Test fails on Window 10 but has not been verified on Linux

[graingert]

"Eventhough" is not a valid word in English

And it's incorrect to say the pytest.raises call fails

[The-Compiler]

I'm afraid I can't make sense of this at all. Those changes both are unneeded and in fact incorrect, but I'm confused as your description/comment ("Should be verified on Linux also . Test fails on Window 10 but has not been verified on Linux") seems to be entirely unrelated to what you're changing (a simple doc update, without any code involved). Can you elaborate?

[alanmehio]

Yes I can. The test case fails as it gives the below error when you run it on window 10 see below console output

pytest test_foo_not_implemented.py
================================================= test session starts =================================================
platform win32 -- Python 3.12.1, pytest-8.3.2, pluggy-1.5.0
rootdir: .... \tox-proj\tests
collected 1 item

test_foo_not_implemented.py F [100%]

====================================================== FAILURES =======================================================
______________________________________________ test_foo_not_implemented _______________________________________________

def test_foo_not_implemented():
    def foo():
        raise NotImplementedError

    with pytest.raises(RuntimeError) as excinfo:
        foo()

  assert excinfo.type is RuntimeError

E AssertionError: assert <class 'NotImplementedError'> is RuntimeError
E + where <class 'NotImplementedError'> = <ExceptionInfo NotImplementedError() tblen=2>.type

test_foo_not_implemented.py:8: AssertionError
=============================================== short test summary info ===============================================
FAILED test_foo_not_implemented.py::test_foo_not_implemented - AssertionError: assert <class 'NotImplementedError'> is RuntimeError
================================================== 1 failed in 0.22s ==================================================

The "test_foo_not_implemented.py" is as below which is copied from the documentation:

import pytest 
def test_foo_not_implemented():
    def foo():
        raise NotImplementedError

    with pytest.raises(RuntimeError) as excinfo:
        foo()
    assert excinfo.type is RuntimeError

[graingert]

Ah the example code is incorrect, but the wording is correct

[graingert]

Line 113 should be assert excinfo.type is NotImplementedError

[The-Compiler]

No, both the text and the code are correct. The whole point of that example is that this fails, as explained right there...

NotImplementedError is a subclass of RuntimeError; however the following assert statement will
catch the problem.

[graingert]

Ah yes indeed

[alanmehio]

The code should be changed from . Otherwise the assertion statement fails. Please reconsider the code change
assert excinfo.type is RuntimeError
to
assert issubclass(excinfo.type, RuntimeError)

[The-Compiler]

Yes, it fails. That's the whole point, as explained in the text around it.