Address errors due to pandas-dev/pandas#63196

Author: spencerkclark

xarray/tests/test_coding_times.py

@@ -599,7 +599,7 @@ def test_cf_timedelta(timedeltas, units, numbers) -> None:
     if timedeltas == "NaT":
         timedeltas = np.timedelta64("NaT", "ns")
     else:
-        timedeltas = pd.to_timedelta(timedeltas).to_numpy()
+        timedeltas = pd.to_timedelta(timedeltas).as_unit("ns").to_numpy()
     numbers = np.array(numbers)
 
     expected = numbers
@@ -623,7 +623,8 @@ def test_cf_timedelta_2d() -> None:
     units = "days"
     numbers = np.atleast_2d([1, 2, 3])
 
-    timedeltas = np.atleast_2d(pd.to_timedelta(["1D", "2D", "3D"]).to_numpy())
+    timedeltas = pd.to_timedelta(["1D", "2D", "3D"]).as_unit("ns")
+    timedeltas = np.atleast_2d(timedeltas.to_numpy())
     expected = timedeltas
 
     actual = decode_cf_timedelta(numbers, units)

xarray/tests/test_plot.py

@@ -2897,7 +2897,7 @@ def test_datetime_hue(self) -> None:
         ds2["hue"] = pd.date_range("2000-1-1", periods=4)
         ds2.plot.scatter(x="A", y="B", hue="hue")
 
-        ds2["hue"] = pd.timedelta_range("-1D", periods=4, freq="D")
+        ds2["hue"] = pd.timedelta_range("-1D", periods=4, freq="D", unit="ns")
         ds2.plot.scatter(x="A", y="B", hue="hue")
 
     def test_facetgrid_hue_style(self) -> None:

xarray/tests/test_variable.py

@@ -1114,7 +1114,7 @@ def test_datetime64_conversion_scalar(self, values, unit):
             (np.timedelta64(1, "m"), "s"),
             (np.timedelta64(1, "D"), "s"),
             (np.timedelta64(1001, "ps"), "ns"),
-            (pd.Timedelta("1 day"), "ns"),
+            (pd.Timedelta("1 day").as_unit("ns"), "ns"),
             (timedelta(days=1), "us" if has_pandas_3 else "ns"),
         ],
     )
@@ -1140,7 +1140,8 @@ def test_0d_datetime(self):
         assert v.values == np.datetime64("2000-01-01", expected_unit)  # type: ignore[call-overload]
 
     @pytest.mark.parametrize(
-        "values, unit", [(pd.to_timedelta("1s"), "ns"), (np.timedelta64(1, "s"), "s")]
+        "values, unit",
+        [(pd.to_timedelta("1s").as_unit("ns"), "ns"), (np.timedelta64(1, "s"), "s")],
     )
     def test_0d_timedelta(self, values, unit):
         # todo: check, if this test is OK