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

mahiro72 · web-flow · commit 10748b2fdb02 · 2025-12-18T10:42:06.000-05:00
## Summary  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  - Added test cases for `match`-only, `check`-only, and both arguments. - `cargo test -p ruff_linter -- "pytestraiseswithoutexception"` passes
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
@@ -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
@@ -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());
             }
