[DOP-30265] Add tests for all supported data types

[MthW01]

Change Summary

Add tests for all supported data types, update "Data type mappings" documentation

Related issue number

Checklist

• Commit message and PR title is comprehensive
• Keep the change as small as possible
• Unit and integration tests for the changes exist
• Tests pass on CI and coverage does not decrease
• Documentation reflects the changes where applicable
• My PR is ready to review.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.16%. Comparing base (1af8582) to head (cf49379).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop      #19      +/-   ##
===========================================
+ Coverage    76.61%   77.16%   +0.55%     
===========================================
  Files            2        2              
  Lines          124      127       +3     
  Branches        29       30       +1     
===========================================
+ Hits            95       98       +3     
  Misses          19       19              
  Partials        10       10              

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