Improving Testing

[BryceRussell]

Currently, there are some basic unit and end-to-end tests, but these could be improved.

unit

• Add more of them
• ...

e2e

• Test more environments that just Ubuntu
• Add tests for type generation
• Add tests for SSR
• ...

Questions:

• Is the current testing pipeline ok? Can it be improved?
• What cases are tests not covering?

[BryceRussell]

IIRC, I think Astro now has a testing API, we should simplify our current testing by migrating to this new testing API