test dtype
-  #43038 closes #xxxx
- 2 tests added / passed
- [ Yes] Ensure all linting tests pass, see [here](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit) for how to run them
- [ ] whatsnew entry

@phofl Can you open this pr beacuse i was assigned to https://github.com/pandas-dev/pandas/issues/43038
and i made the change requested here https://github.com/pandas-dev/pandas/pull/44618
and my last commit passed all the tests You can add the changes to #44618, no need to open a new pr every time you change something