#18663: document that assertAlmostEqual also works when the values are equal and add tests.
diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst
index 1bd3819..f36a44d 100644
--- a/Doc/library/unittest.rst
+++ b/Doc/library/unittest.rst
@@ -1017,7 +1017,7 @@
like the :func:`round` function) and not *significant digits*.
If *delta* is supplied instead of *places* then the difference
- between *first* and *second* must be less (or more) than *delta*.
+ between *first* and *second* must be less or equal to (or greater than) *delta*.
Supplying both *delta* and *places* raises a ``TypeError``.