fix type errors, add type tests

[jakkdl]

• Fixes Type error with pyright when creating BaseExceptionGroup #117
• Adds tests/type_test.py as type test, which quickly alerted me to two additional errors I also fixed:
• The cause of Type error with pyright when creating BaseExceptionGroup #117 wasn't isolated to BaseExceptionGroup and ExceptionGroup was also lacking type[...], but instead of getting an error at creation it instead returning ExceptionGroup[Unknown].
  • Both of these were introduced by me in expand CI pyright to use full python version matrix and fix type errors #101
• suppress was typed as expecting instances of BaseException, but README was passing a class. I went with assuming the README was correct and it should only accept exception classes, but maybe it should accept either?
• I also added a random cast to suppress.__exit__ so that file now type checks, though the code isn't type checked in CI so /shrug.

The type test could be much more thorough, and given that I almost instantly found an unrelated error with suppress I suspect there could be more issues hidden. You should definitely add repro's of any other issues you have, and I might check them out and see if they have easy fixes.

[coveralls]

Pull Request Test Coverage Report for Build 8744686812

Details

• 4 of 4 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.01%) to 92.361%

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Totals
Change from base Build 8744427096:	0.01%
Covered Lines:	532
Relevant Lines:	576

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💛 - Coveralls

[agronholm]

One more thing: could you add a changelog note too? I'll merge when that's done.

[jakkdl]

This PR mostly just fixes #101, which didn't have a changelog entry and was unreleased, so I wrote an entry for that, and another entry for suppress() being fixed.

Although you probably want a note for #112 as well

[jakkdl]

I don't really understand #112, but more or less copied over the commit message to the changelog.

[jakkdl]

It looks like the 3.12 failure is unrelated to this PR

[agronholm]

It looks like the 3.12 failure is unrelated to this PR

Seems like this started within the last 24 hours. Perhaps caused by a Python update?

[jakkdl]

It looks like the 3.12 failure is unrelated to this PR

Seems like this started within the last 24 hours. Perhaps caused by a Python update?

Yeah it went from 3.12.2 (https://github.com/agronholm/exceptiongroup/actions/runs/8706318205/job/23878615916#step:3:12) to 3.12.3 (https://github.com/agronholm/exceptiongroup/actions/runs/8736236104/job/23970716558#step:3:12)

[agronholm]

Thanks!