Fixed test failures

Author: WillAyd

pandas/tests/extension/test_arrow.py

@@ -3451,7 +3451,7 @@ def test_string_to_datetime_parsing_cast():
 )
 def test_interpolate_not_numeric(data):
     if not data.dtype._is_numeric:
-        with pytest.raises(ValueError, match="Values must be numeric."):
+        with pytest.raises(NotImplementedError, match="interpolate is not implemented"):
             pd.Series(data).interpolate()
 
 

pandas/tests/frame/methods/test_astype.py

@@ -767,6 +767,7 @@ def test_astype_dt64_to_string(
             assert item is pd.NA
 
         # Check that Series/DataFrame.astype matches DatetimeArray.astype
+        result = obj.astype("str")
         expected = frame_or_series(dta.astype("str"))
         tm.assert_equal(result, expected)