moved and updated test

Author: ArtificialQualia

pandas/tests/scalar/test_nat.py

@@ -348,3 +348,16 @@ def test_to_numpy_alias():
     result = NaT.to_numpy()
 
     assert isna(expected) and isna(result)
+
+
+@pytest.mark.parametrize("op", [
+    lambda a, b: a > b, lambda a, b: a >= b,
+    lambda a, b: a < b, lambda a, b: a <= b
+])
+@pytest.mark.parametrize("other", [
+    Timedelta(0), Timestamp(0)
+])
+def test_nat_comparisons(op, other):
+    # GH 26039
+    assert op(NaT, other) is False
+    assert op(other, NaT) is False

pandas/tests/scalar/timedelta/test_arithmetic.py

@@ -689,37 +689,3 @@ def test_rdivmod_invalid(self):
     def test_td_op_timedelta_timedeltalike_array(self, op, arr):
         with pytest.raises(TypeError):
             op(arr, Timedelta('1D'))
-
-
-class TestTimedeltaCompare():
-    """
-    Tests for Timedelta comparisons.
-    """
-
-    def test_timedelta_nat_comparisons(self):
-        # GH 26039
-        td = pd.Timedelta(0)
-
-        result = td > NaT
-        assert result is False
-
-        result = td >= NaT
-        assert result is False
-
-        result = td < NaT
-        assert result is False
-
-        result = td <= NaT
-        assert result is False
-
-        result = NaT > td
-        assert result is False
-
-        result = NaT >= td
-        assert result is False
-
-        result = NaT < td
-        assert result is False
-
-        result = NaT <= td
-        assert result is False