Add some regression tests on generated package files #329
Description
Is Your Feature Request Related to a Problem? Please Describe
We don't currently have any regression tests for the files that are generated by the package template. As an example of where this would have been useful, see #309. I made a mistake that broke a couple of the pyproject.toml fields, that would have been more easily spotted if there was a test that compared pyproject.toml against a reference/expected file.
Describe the Solution You'd Like
Add a test that compares pyproject.toml to an expected/reference file, which fails if the generated file doesn't match. I would suggest starting with just pyprojec.toml to pin down the testing machinery, and then rolling out to other files in a follow up PR.
Describe Alternatives You've Considered
No response
Additional Context
No response