Add unit/integration tests for error dialogs

[ajbozarth]

We surface a variety of error dialogs to the user. We should take stock of all the error dialogs we raise and create a integration test suite checking each one of them.

[ajbozarth]

If no one picks this up before I get to it I can handle this. This would be a good way to get familiar with both our integration test frame work as well as our various dialog and error handling. Depending on how this is addressed it may make sense to test all dialogs here, not just error dialogs.

[vhada7]

I would like to work on this !