Add new filtering() method to LogCaptureFixture class (#11625)

Fixes #11610

src/_pytest/logging.py

@@ -564,6 +564,22 @@ class LogCaptureFixture:
             self.handler.setLevel(handler_orig_level)
             logging.disable(original_disable_level)
 
+    @contextmanager
+    def filtering(self, filter_: logging.Filter) -> Generator[None, None, None]:
+        """Context manager that temporarily adds the given filter to the caplog's
+        :meth:`handler` for the 'with' statement block, and removes that filter at the
+        end of the block.
+
+        :param filter_: A custom :class:`logging.Filter` object.
+
+        .. versionadded:: 7.5
+        """
+        self.handler.addFilter(filter_)
+        try:
+            yield
+        finally:
+            self.handler.removeFilter(filter_)
+
 
 @fixture
 def caplog(request: FixtureRequest) -> Generator[LogCaptureFixture, None, None]: