Added test for NaT

Author: Chris Bertinato

doc/source/whatsnew/v0.25.0.rst

@@ -33,7 +33,7 @@ Backwards incompatible API changes
 Other API Changes
 ^^^^^^^^^^^^^^^^^
 
-- ``Timestamp`` and ``Timedelta`` scalars now implement the :meth:`to_numpy` method as aliases to :meth:`Timestamp.to_datetime64` and :meth:`Timedelta.to_timedelta64`, respectively.
+- ``Timestamp`` and ``Timedelta`` scalars now implement the :meth:`to_numpy` method as aliases to :meth:`Timestamp.to_datetime64` and :meth:`Timedelta.to_timedelta64`, respectively. (:issue:`24653`)
 
 -
 -

pandas/tests/scalar/test_nat.py

@@ -339,3 +339,8 @@ def test_nat_arithmetic_td64_vector(op_name, box):
 def test_nat_pinned_docstrings():
     # see gh-17327
     assert NaT.ctime.__doc__ == datetime.ctime.__doc__
+
+
+def test_to_numpy_alias():
+    # GH 24653: alias .to_numpy() for scalars
+    assert NaT.to_datetime64() == NaT.to_numpy()