Add bake() method for pre-configured request expectations

[HayaoSuzuki]

Add HTTPServer.bake(**kwargs) which returns a BakedHTTPServer proxy with pre-configured defaults for expect_request() and related methods.

• BakedHTTPServer is a lightweight proxy, such that no new server is created.
• Defaults use last-wins merging, such that call-time kwargs override baked defaults.
• bake() can be chained, such that httpserver.bake(method="POST").bake(headers={...}) .
• All three expect_* methods are supported.
• Other attributes (url_for, check_assertions, etc.) are delegated via __getattr__ .
• Context manager protocol is supported via explicit __enter__ and __exit__ delegation.

Closes #46

[csernazs]

Thanks for the PR, I submitted my comments

[HayaoSuzuki]

Thanks for the review. I submitted fix commits. Feel free to check them when you have time.

[csernazs]

may I ask you to write a release notes for this? You can run .venv/bin/reno new --edit stackable-expectations and then write a short text in yaml. Feel free to add your github handle there as you implemented the whole thing.

If you don't want, I can do that as well.

[csernazs]

hi @HayaoSuzuki ,

Thanks for all the changes, I think everything looks great.

Could you please squash your commits?

Then I'm happy to merge it.

Zsolt

[HayaoSuzuki]

@csernazs I squashed some commits. Thanks for the gracious review of our PR.

[csernazs]

hi @HayaoSuzuki ,

This has been released with version 1.1.5.

Thanks for the implementation again,
Zsolt