Debugger proxies for resilience strategies

[martintmk]

Details on the issue fix or feature implementation

Simplifies the debugging. Contributes to #1367

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• I started this PR by branching from the head of the default branch
• I have targeted the PR to merge into the default branch
• I have included unit tests for the issue/feature
• I have successfully run a local build

[codecov]

Codecov Report

Merging #1379 (bf9b9e7) into main (870d053) will increase coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #1379      +/-   ##
==========================================
+ Coverage   83.60%   83.63%   +0.03%     
==========================================
  Files         267      269       +2     
  Lines        6397     6411      +14     
  Branches     1002     1004       +2     
==========================================
+ Hits         5348     5362      +14     
  Misses        840      840              
  Partials      209      209              

Flag	Coverage Δ
linux	?
macos	83.63% <100.00%> (+0.03%)	⬆️
windows	83.63% <100.00%> (+0.03%)	⬆️

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Impacted Files	Coverage Δ
src/Polly.Core/ResilienceStrategy.TResult.Async.cs	100.00% <ø> (ø)
src/Polly.Core/ResilienceStrategy.cs	100.00% <ø> (ø)
src/Polly.Core/Utils/ResilienceStrategyPipeline.cs	100.00% <ø> (ø)
src/Polly.Core/ResilienceStrategy.DebuggerProxy.cs	100.00% <100.00%> (ø)
...y.Core/ResilienceStrategy.TResult.DebuggerProxy.cs	100.00% <100.00%> (ø)

[martincostello]

Nice!

Do you have some screenshots of how this appears in the debugger?

[martintmk]

Nice!

Do you have some screenshots of how this appears in the debugger?

When you expand it it will show the list of strategies inside.

[martincostello]

Just playing with this and it's not quite right - if you expand the pipeline to see what it's composed of, then each individual item just repeats forever.

I don't seem to be able to get VS to take a screenshot without hiding the debugger tooltip though 😄

[martintmk]

@martincostello, checked the behavior too and it's strange. Let me try to address it.