convert most old test data to new testing style

[davidbloss]

Issues

#128

Changelog

Move most test data from testdata/fixtures/**/*(request|response).json into NewTestRequest() arguments.
💥 Deleted 50 old testdata json files ✌️

• List your changes here
• Make a changie entry, N/A testing only

Tophatting

task test - all tests pass

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (b81d606) 76.80% compared to head (244a9c1) 76.75%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #307      +/-   ##
==========================================
- Coverage   76.80%   76.75%   -0.06%     
==========================================
  Files          50       50              
  Lines        3307     3308       +1     
==========================================
- Hits         2540     2539       -1     
- Misses        564      565       +1     
- Partials      203      204       +1     

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