Check if tests besides dtypes fail by going to pyarrow

Author: mroeschke

pandas/_testing/asserters.py

@@ -474,6 +474,14 @@ def assert_attr_equal(attr: str, left, right, obj: str = "Attributes") -> None:
     left_attr = getattr(left, attr)
     right_attr = getattr(right, attr)
 
+    if attr == "dtype":
+        from pandas.core.arrays.arrow.dtype import ArrowDtype
+
+        if isinstance(left_attr, ArrowDtype):
+            left_attr = left_attr.pyarrow_dtype.to_pandas_dtype()
+        if isinstance(right_attr, ArrowDtype):
+            right_attr = right_attr.pyarrow_dtype.to_pandas_dtype()
+
     if left_attr is right_attr or is_matching_na(left_attr, right_attr):
         # e.g. both np.nan, both NaT, both pd.NA, ...
         return None