Fix: Check fail

Author: Aniketsy

pandas/_testing/asserters.py

@@ -328,7 +328,14 @@ def _check_types(left, right, obj: str = "Index") -> None:
             try:
                 mismatch = left._values != right._values
             except TypeError:
-                mismatch = left._internal_get_values() != right._internal_get_values()
+                if hasattr(left, "_internal_get_values") and hasattr(
+                    right, "_internal_get_values"
+                ):
+                    mismatch = (
+                        left._internal_get_values() != right._internal_get_values()
+                    )
+                else:
+                    mismatch = left.values != right.values
 
             if not isinstance(mismatch, np.ndarray):
                 mismatch = cast("ExtensionArray", mismatch).fillna(True)