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Tweak docs on review

This commit is contained in:
Zac Hatfield-Dodds 2023-06-30 15:29:03 -07:00
parent 7022fb455d
commit 2d48171e88
2 changed files with 11 additions and 9 deletions
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8
changelog/9288.breaking.rst
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@ -1 +1,7 @@
Set :func:`warns` to re-emit unmatched warnings when the context closes
:func:`pytest.warns <warns>` now re-emits unmatched warnings when the context
closes -- previously it would consume all warnings, hiding those that were not
matched by the function.
While this is a new feature, we decided to announce this as a breaking change
because many test suites are configured to error-out on warnings, and will
therefore fail on the newly-re-emitted warnings.

12
src/_pytest/recwarn.py
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@ -117,10 +117,10 @@ def warns( # noqa: F811
warning of that class or classes.
This helper produces a list of :class:`warnings.WarningMessage` objects, one for
each warning raised (regardless of whether it is an ``expected_warning`` or not).
each warning emitted (regardless of whether it is an ``expected_warning`` or not).
Since pytest 8.0, unmatched warnings are also re-emitted when the context closes.
This function can be used as a context manager, which will capture all the raised
warnings inside it::
This function can be used as a context manager::
>>> import pytest
>>> with pytest.warns(RuntimeWarning):
@ -150,10 +150,6 @@ def warns( # noqa: F811
This could be achieved in the same way as with exceptions, see
:ref:`parametrizing_conditional_raising` for an example.
.. note::
Unlike the stdlib :func:`warnings.catch_warnings` context manager,
unmatched warnings will be re-emitted when the context closes.
"""
__tracebackhide__ = True
if not args:
@ -328,7 +324,7 @@ class WarningsChecker(WarningsRecorder):
if not self.matches(w):
warnings.warn_explicit(
str(w.message),
w.message.__class__, # type: ignore
w.message.__class__, # type: ignore[arg-type]
w.filename,
w.lineno,
module=w.__module__,