Fixes Issue #20165: The unittest module no longer considers tests marked with
@expectedFailure successful if they pass.
diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst
index 5cbc51b..537cc3b 100644
--- a/Doc/library/unittest.rst
+++ b/Doc/library/unittest.rst
@@ -1772,6 +1772,10 @@
Return ``True`` if all tests run so far have passed, otherwise returns
``False``.
+ .. versionchanged:: 3.4
+ Returns ``False`` if there were any :attr:`unexpectedSuccesses`
+ from tests marked with the :func:`expectedFailure` decorator.
+
.. method:: stop()