better tests

Author: fujiisoup

xarray/tests/test_dataarray.py

@@ -6178,8 +6178,16 @@ def test_rolling_iter(da):
                 actual.values[actual.values.nonzero()],
                 expected.values[expected.values.nonzero()],
             )
-    # no error
-    repr(rolling_obj)
+
+
+@pytest.mark.parametrize("da", (1,), indirect=True)
+def test_rolling_repr(da):
+    rolling_obj = da.rolling(time=7)
+    assert repr(rolling_obj) == "DataArrayRolling [time->7]"
+    rolling_obj = da.rolling(time=7, center=True)
+    assert repr(rolling_obj) == "DataArrayRolling [time->7(center)]"
+    rolling_obj = da.rolling(time=7, x=3, center=True)
+    assert repr(rolling_obj) == "DataArrayRolling [time->7(center),x->3(center)]"
 
 
 def test_rolling_doc(da):