Adjust tests in generic folder for arrow string option (#56139)

Author: phofl

pandas/tests/generic/test_to_xarray.py

@@ -29,7 +29,7 @@ def df(self):
             }
         )
 
-    def test_to_xarray_index_types(self, index_flat, df):
+    def test_to_xarray_index_types(self, index_flat, df, using_infer_string):
         index = index_flat
         # MultiIndex is tested in test_to_xarray_with_multiindex
         if len(index) == 0:
@@ -51,7 +51,9 @@ def test_to_xarray_index_types(self, index_flat, df):
         # datetimes w/tz are preserved
         # column names are lost
         expected = df.copy()
-        expected["f"] = expected["f"].astype(object)
+        expected["f"] = expected["f"].astype(
+            object if not using_infer_string else "string[pyarrow_numpy]"
+        )
         expected.columns.name = None
         tm.assert_frame_equal(result.to_dataframe(), expected)
 
@@ -63,7 +65,7 @@ def test_to_xarray_empty(self, df):
         assert result.dims["foo"] == 0
         assert isinstance(result, Dataset)
 
-    def test_to_xarray_with_multiindex(self, df):
+    def test_to_xarray_with_multiindex(self, df, using_infer_string):
         from xarray import Dataset
 
         # MultiIndex
@@ -78,7 +80,9 @@ def test_to_xarray_with_multiindex(self, df):
 
         result = result.to_dataframe()
         expected = df.copy()
-        expected["f"] = expected["f"].astype(object)
+        expected["f"] = expected["f"].astype(
+            object if not using_infer_string else "string[pyarrow_numpy]"
+        )
         expected.columns.name = None
         tm.assert_frame_equal(result, expected)