From 10748b2fdb021e4d8e548f09e8e182c69d7c1f5a Mon Sep 17 00:00:00 2001
From: mahiro <70263039+mahiro72@users.noreply.github.com>
Date: Fri, 19 Dec 2025 00:42:06 +0900
Subject: [PATCH] [`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
---
 .../test/fixtures/flake8_pytest_style/PT010.py       | 12 ++++++++++++
 .../src/rules/flake8_pytest_style/rules/raises.rs    |  5 +++++
 2 files changed, 17 insertions(+)

diff --git a/crates/ruff_linter/resources/test/fixtures/flake8_pytest_style/PT010.py b/crates/ruff_linter/resources/test/fixtures/flake8_pytest_style/PT010.py
index e6cc58cbc3..4191976043 100644
--- a/crates/ruff_linter/resources/test/fixtures/flake8_pytest_style/PT010.py
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_pytest_style/PT010.py
@@ -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
diff --git a/crates/ruff_linter/src/rules/flake8_pytest_style/rules/raises.rs b/crates/ruff_linter/src/rules/flake8_pytest_style/rules/raises.rs
index 04c9a8c372..c9e3e8e702 100644
--- a/crates/ruff_linter/src/rules/flake8_pytest_style/rules/raises.rs
+++ b/crates/ruff_linter/src/rules/flake8_pytest_style/rules/raises.rs
@@ -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());
             }