TST:Disallow bare pytest raises issue 30999
- [x] refers #30999 
- [ ] tests added / passed
- [x] passes `black pandas`
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

This pull request is to add appropriate match arguments to bare pytest.raises listed in #30999 [Comment](https://github.com/pandas-dev/pandas/issues/30999#issuecomment-574339599)
Hello @shubchat! Thanks for updating this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:







There are currently no PEP 8 issues detected in this Pull Request. Cheers! :beers: 

##### Comment last updated at 2020-01-21 19:45:51 UTC Thanks @shubchat ! > Thanks @shubchat !

My pleasure @jorisvandenbossche 