feat(testing): add __repr__ to testing.Result

[RioAtHome]

Summary of Changes

Added __repr__ to testing.Result, where it shows the status code, content-type header and first 20 char. Also added a simple test.

Related Issues

Issue #2044

Pull Request Checklist

• [x] Applied changes to both WSGI and ASGI code paths and interfaces (where applicable).
• [x] Added tests for changed code.
• [x] Prefixed code comments with GitHub nick and an appropriate prefix.
• [x] Coding style is consistent with the rest of the framework.
• [x] Updated documentation for changed code.
  • [ ] Added docstrings for any new classes, functions, or modules.
  • [ ] Updated docstrings for any modifications to existing code.
  • [ ] Updated both WSGI and ASGI docs (where applicable).
  • [ ] Added references to new classes, functions, or modules to the relevant RST file under docs/.
  • [ ] Updated all relevant supporting documentation files under docs/.
  • [ ] A copyright notice is included at the top of any new modules (using your own name or the name of your organization).
  • [ ] Changed/added classes/methods/functions have appropriate versionadded, versionchanged, or deprecated directives.
• [x] Changes (and possible deprecations) have towncrier news fragments under docs/_newsfragments/, with the file name format {issue_number}.{fragment_type}.rst. (Run towncrier --draft to ensure it renders correctly.)

PR template inspired by the attrs project.

[codecov[bot]]

Codecov Report

Merging #2046 (699eba9) into master (dc67205) will not change coverage. The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master     #2046   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           63        63           
  Lines         6707      6715    +8     
  Branches      1242      1243    +1     
=========================================
+ Hits          6707      6715    +8     

Impacted Files	Coverage Δ
falcon/testing/client.py	100.00% <100.00%> (ø)

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[RioAtHome]

This is shaping up! Should we also add a towncrier newsfragment for this improvement?

towncrier newsfragment? Sorry to be a bother, but any pointers on what this is?, and where to start if i want to add it?

[CaselIT]

towncrier newsfragment?

It's just a few words that should appear on the changelog. See other newsfragments here https://github.com/falconry/falcon/tree/master/docs/_newsfragments and this section of the contributing file https://github.com/falconry/falcon/blob/master/CONTRIBUTING.md#changelog

[RioAtHome]

@CaselIT Thanks for the replying. I like to point out that the link to towncrier in the changelog section of the contributing file does not work.

[vytas7]

Unfortunately towncrier isn't particularly well maintained; we're looking for alternatives, but I don't know when the change could actually happen. Anyway, I'll update the link to https://towncrier.readthedocs.io/, that should be fixed as per https://github.com/twisted/towncrier/issues/367 (although it still says 17.08 in the title? :thinking:)

[RioAtHome]

Hello, sorry to be a bother, but can i get a review on this pull request?

[RioAtHome]

my latest commit changes:

• Result.__repr__ will not show any None values.
• Result.__repr__ shows a total of 40 bytes of Result.content where it takes the first 20 and the last 20 and ellipsize the rest with ....
• made some few adjustments to Result.__repr__ tests, mainly removed duplicate code (the get and post methods).