Check server errors when a request context exits

[sricharanreddycheruku]

wait() stops when its first stopping condition is met, so unexpected requests sent after all ordered requests complete are not reported by that context. As proposed in #482, this adds with_check() to run the existing server checks when a block exits normally.

The helper reports unexpected requests and response-handler errors without changing wait() semantics. It yields the server instance and preserves exceptions raised inside the block. It does not wait for requests or stop the server. The how-to documentation and a Reno release note describe these semantics.

Four regression tests cover successful ordered requests, an unexpected request after the expected requests, handler errors, and preservation of a client-side exception. All four fail on the original source because the helper is absent; all pass with this change.

Validation on Linux with Python 3.12.14 and the locked development dependencies installed using Poetry 2.1.1:

• HTTP suite including release/package tests: pytest -q tests --release — 154 passed, 3 skipped, 2 xfailed; the existing tar-extraction warning remains.
• Existing HTTPS suite: pytest -q tests --ssl — 1 passed, 158 skipped by the SSL selection.
• Handler-error and wait tests: 13 passed.
• Mypy: no issues in 57 source files.
• make precommit and git diff --check: passed.
• make doc: passed. Its 59 warnings also occur with unchanged source; this change introduces none.

Fixes #482

[csernazs]

Hi @sricharanreddycheruku,

Thanks for your PR, it looks good and I'll merge it now.

Since I had a release a couple of days ago, is it ok for you to wait a few days for the next release? Until then you can give it a try by referencing to the master branch of this repository.

Thanks,
Zsolt

[sricharanreddycheruku]

Thanks, Yes, waiting a few days for the next release is fine. Thanks for reviewing and merging the PR.