fix typing for raises-func: does not return None

Author: blueyed

src/_pytest/python_api.py

@@ -558,7 +558,7 @@ def raises(  # noqa: F811
     func: Callable,
     *args: Any,
     **kwargs: Any
-) -> Optional[_pytest._code.ExceptionInfo[_E]]:
+) -> _pytest._code.ExceptionInfo[_E]:
     ...  # pragma: no cover
 
 

testing/python/raises.py

@@ -187,7 +187,7 @@ def __call__(self):
 
         assert refcount == len(gc.get_referrers(t))
 
-    def test_raises_match(self):
+    def test_raises_match(self) -> None:
         msg = r"with base \d+"
         with pytest.raises(ValueError, match=msg):
             int("asdf")
@@ -215,8 +215,8 @@ def test_raises_match(self):
         def tfunc(match):
             raise ValueError("match={}".format(match))
 
-        excinfo = pytest.raises(ValueError, tfunc, match="asdf").match("match=asdf")
-        excinfo = pytest.raises(ValueError, tfunc, match="").match("match=")
+        pytest.raises(ValueError, tfunc, match="asdf").match("match=asdf")
+        pytest.raises(ValueError, tfunc, match="").match("match=")
 
     def test_match_failure_string_quoting(self):
         with pytest.raises(AssertionError) as excinfo: