Fix for JSON on optional nested types.

[kschwab]

Resolves #196

Updated to recursively search the annotation for any model that matches key. Note that there is a possibility that it could get the wrong field in case of union with complex types that both have the same key. Not sure how that case should be handled. For now, it picks first match.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (cc6dc25) 97.61% compared to head (6bbd332) 97.69%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #217      +/-   ##
==========================================
+ Coverage   97.61%   97.69%   +0.07%     
==========================================
  Files           5        5              
  Lines         336      347      +11     
  Branches       71       76       +5     
==========================================
+ Hits          328      339      +11     
  Misses          6        6              
  Partials        2        2              

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[hramezani]

Thanks @kschwab for this PR 🙏

The test case that you've added is great. Could you please add another test case based on the code snippet in reported issue?

[kschwab]

@hramezani good catch. #196 was slightly different issue compared to mine. I have pushed a fix and added test.

[hramezani]

Thanks @kschwab for this. I've just updated the tests.

[kschwab]

Thanks @hramezani!