[flake8-pytest-style] Allow match and check keyword arguments without an expected exception type (PT010) (#21964)

## Summary

<!-- What's the purpose of the change? What does it do, and why? -->

Updates PT010(`pytest-raises-without-exception`) to recognize `match`
and `check` keyword arguments as valid alternatives to specifying an
exception class.

As of pytest 8.4.0, `pytest.raises()` can be called with only `match` or
`check` keyword arguments without an expected exception.

Fixes #18653

## Test Plan

<!-- How was it tested? -->

- Added test cases for `match`-only, `check`-only, and both arguments.
- `cargo test -p ruff_linter -- "pytestraiseswithoutexception"` passes
This commit is contained in:
mahiro 2025-12-19 00:42:06 +09:00 committed by GitHub
parent 56539db520
commit 10748b2fdb
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2 changed files with 17 additions and 0 deletions

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@ -9,3 +9,15 @@ def test_ok():
def test_error():
with pytest.raises(UnicodeError):
pass
def test_match_only():
with pytest.raises(match="some error message"):
pass
def test_check_only():
with pytest.raises(check=lambda e: True):
pass
def test_match_and_check():
with pytest.raises(match="some error message", check=lambda e: True):
pass

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@ -125,6 +125,9 @@ impl Violation for PytestRaisesTooBroad {
/// ## Why is this bad?
/// `pytest.raises` expects to receive an expected exception as its first
/// argument. If omitted, the `pytest.raises` call will fail at runtime.
/// The rule will also accept calls without an expected exception but with
/// `match` and/or `check` keyword arguments, which are also valid after
/// pytest version 8.4.0.
///
/// ## Example
/// ```python
@ -181,6 +184,8 @@ pub(crate) fn raises_call(checker: &Checker, call: &ast::ExprCall) {
.arguments
.find_argument("expected_exception", 0)
.is_none()
&& call.arguments.find_keyword("match").is_none()
&& call.arguments.find_keyword("check").is_none()
{
checker.report_diagnostic(PytestRaisesWithoutException, call.func.range());
}