The test suite is currently somewhat weak with respect to testing error cases and validating the resulting error messages.

The test suite should probably move tests that check error cases into a separate directory.

Hi! Charm needs your help. We have a glossary of all of our functions, but it's hard for me to keep it up alone. I know that many of the functions listed may not have 100% correct information, and most of the source codes listed on the page are unupdated. Adding to the [Glossary.yaml](https://github.com/Aearnus/charm/blob/master/do