try using a new custom object instead of object

Author: darikg

xarray/tests/test_dataarray.py

@@ -6836,6 +6836,9 @@ def test_delete_coords():
 
 
 def test_deepcopy_obj_array():
-    x0 = DataArray(np.array([object()]))
+    class Dummy:
+        pass
+
+    x0 = DataArray(np.array([Dummy()]))
     x1 = deepcopy(x0)
     assert x0.values[0] is not x1.values[0]

xarray/tests/test_dataset.py

@@ -6457,6 +6457,9 @@ def test_weakref():
 
 
 def test_deepcopy_obj_array():
-    x0 = Dataset(dict(foo=DataArray(np.array([object()]))))
+    class Dummy:
+        pass
+    
+    x0 = Dataset(dict(foo=DataArray(np.array([Dummy()]))))
     x1 = deepcopy(x0)
     assert x0["foo"].values[0] is not x1["foo"].values[0]