--- xarray-0.18.1/xarray/tests/test_dataset.py	2021-05-19 15:51:40.453553119 +0200
+++ xarray-0.18.1/xarray/tests/test_dataset.py	2021-05-19 15:52:03.669706686 +0200
@@ -3988,7 +3988,7 @@
         expected_ = ds.bar.to_series().resample("24H").mean()
         expected_.index += to_offset("-12H")
         expected = DataArray.from_series(expected_)
-        assert_identical(actual, expected)
+        assert_allclose(actual, expected)
 
     def test_resample_by_mean_discarding_attrs(self):
         times = pd.date_range("2000-01-01", freq="6H", periods=10)