chore: cover all tests

[ematipico]

Changes

This PR adds snapshot testing to ALL tests.

I also changed a bit the way we create snapshot testing, I created an utility called MakeSnapshot inside test_utils.go, which accepts certain options to generate the snapshots.

Before this PR, the snapshots were stored inside a __snapshots__ folder, but I preferred to configure that value, and pass a specific folder for each test suite we're testing. I found dividing snapshots by test case to be nice.

Testing

CI should pass

Docs

N/A

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[bluwy]

Do we need snapshot testing for all tests? Seems like these are rather short and can be asserted entirely with a single string. The features are also well-defined and isolated (and unlikely to have internal implementation change).

I think it's fine to leave it as is, and perhaps leave snapshots for larger file outputs only that's hard to assert and susceptible to internal implementation change.

[ematipico]

Do we need snapshot testing for all tests? Seems like these are rather short and can be asserted entirely with a single string. The features are also well-defined and isolated (and unlikely to have internal implementation change).

That's my question from me to you, as you have more knowledge than me, background-wise. I hope you can tell me which tests don't need a snapshot and why.

From what I can tell, ALL tests use a transformation step, which is the whole point of the snapshot.

[matthewp]

The printer tests are the ones that should be a snapshot. But from this PR it doesn't look like the old manual tests are removed. So I don't think I am following what is going on.

[ematipico]

The printer tests are the ones that should be a snapshot. But from this PR it doesn't look like the old manual tests are removed. So I don't think I am following what is going on.

1. I'll reduce the amount of snapshots to the printing
2. Regarding the old tests, I explained here why I found them useful: feat: snapshot testing (1/*) #995 (comment)