Closes issue 7030.
diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst
index b1899ce..d3b0767 100644
--- a/Doc/library/unittest.rst
+++ b/Doc/library/unittest.rst
@@ -806,12 +806,16 @@
.. versionadded:: 2.7
- .. method:: assertSameElements(expected, actual, msg=None)
+ .. method:: assertSameElements(actual, expected, msg=None)
Test that sequence *expected* contains the same elements as *actual*,
regardless of their order. When they don't, an error message listing
the differences between the sequences will be generated.
+ Duplicate elements are ignored when comparing *actual* and *expected*.
+ It is the equivalent of ``assertEqual(set(expected), set(actual))``
+ but it works with sequences of unhashable objects as well.
+
If specified *msg* will be used as the error message on failure.
.. versionadded:: 2.7