Address errors due to pandas-dev/pandas#63146

Author: spencerkclark

xarray/tests/test_groupby.py

@@ -3815,7 +3815,7 @@ def test_mean_with_cftime_objects_dask():
 
 def test_groupby_bins_datetime_mean():
     """Test groupby_bins with datetime mean (issue #6995)"""
-    times = pd.date_range("2020-01-01", "2020-02-01", freq="1h")
+    times = pd.date_range("2020-01-01", "2020-02-01", freq="1h", unit="ns")
     index = np.arange(len(times))
     bins = np.arange(0, len(index), 5)
 
@@ -3836,7 +3836,10 @@ def test_groupby_bins_mean_time_series():
     ds = xr.Dataset(
         {
             "measurement": ("trial", np.arange(0, 100, 10)),
-            "time": ("trial", pd.date_range("20240101T1500", "20240101T1501", 10)),
+            "time": (
+                "trial",
+                pd.date_range("20240101T1500", "20240101T1501", 10, unit="ns"),
+            ),
         }
     )
 

xarray/tests/test_interp.py

@@ -721,7 +721,7 @@ def test_datetime(x_new, expected) -> None:
     da = xr.DataArray(
         np.arange(24),
         dims="time",
-        coords={"time": pd.date_range("2000-01-01", periods=24)},
+        coords={"time": pd.date_range("2000-01-01", periods=24, unit="ns")},
     )
 
     actual = da.interp(time=x_new)
@@ -739,7 +739,7 @@ def test_datetime_single_string() -> None:
     da = xr.DataArray(
         np.arange(24),
         dims="time",
-        coords={"time": pd.date_range("2000-01-01", periods=24)},
+        coords={"time": pd.date_range("2000-01-01", periods=24, unit="ns")},
     )
     actual = da.interp(time="2000-01-01T12:00")
     expected = xr.DataArray(0.5)

xarray/tests/test_variable.py

@@ -279,7 +279,7 @@ def test_0d_time_data(self):
         expected = np.datetime64("2000-01-01", "ns")
         assert x[0].values == expected
 
-    dt64_data = pd.date_range("1970-01-01", periods=3)
+    dt64_data = pd.date_range("1970-01-01", periods=3, unit="ns")
 
     @pytest.mark.parametrize(
         "values, unit",
@@ -3158,7 +3158,7 @@ def test_from_pint_wrapping_dask(self, Var):
         (np.datetime64("2000-01-01", "s"), "s"),
         (np.array([np.datetime64("2000-01-01", "ns")]), "ns"),
         (np.array([np.datetime64("2000-01-01", "s")]), "s"),
-        (pd.date_range("2000", periods=1), "ns"),
+        (pd.date_range("2000", periods=1, unit="ns"), "ns"),
         (
             datetime(2000, 1, 1),
             "us" if has_pandas_3 else "ns",
@@ -3167,10 +3167,17 @@ def test_from_pint_wrapping_dask(self, Var):
             np.array([datetime(2000, 1, 1)]),
             "us" if has_pandas_3 else "ns",
         ),
-        (pd.date_range("2000", periods=1, tz=pytz.timezone("America/New_York")), "ns"),
+        (
+            pd.date_range(
+                "2000", periods=1, tz=pytz.timezone("America/New_York"), unit="ns"
+            ),
+            "ns",
+        ),
         (
             pd.Series(
-                pd.date_range("2000", periods=1, tz=pytz.timezone("America/New_York"))
+                pd.date_range(
+                    "2000", periods=1, tz=pytz.timezone("America/New_York"), unit="ns"
+                )
             ),
             "ns",
         ),