gh-93649: Split exception tests from _testcapimodule.c

[erlend-aasland]

• Issue: Split up _testcapimodule.c #93649

Automerge-Triggered-By: GH:erlend-aasland

[erlend-aasland]

Rationale: make it easier to increase coverage of the C API for exception handling.

Regarding the Lib/test part: the _testcapi stuff is scattered across a lot of test files. Would it make sense to consolidate these (in a follow-up PR)?

[iritkatriel]

Rationale: make it easier to increase coverage of the C API for exception handling.

Regarding the Lib/test part: the _testcapi stuff is scattered across a lot of test files. Would it make sense to consolidate these (in a follow-up PR)?

It depends, we'd need to see why it's scattered like that. Could be divided on some other criteria.

[miss-islington]

@erlend-aasland: Status check is done, and it's a failure or timed out ❌.

[miss-islington]

@erlend-aasland: Status check is done, and it's a failure or timed out ❌.

[miss-islington]

Status check is done, and it's a success ✅.