test: Add minimal test mock library

[philprime]

📜 Description

Adds minimal testing framework for mocking dependencies and assert function calling in unit testing. Heavily inspiried by jest.

💡 Motivation and Context

We want to add unit tests which tests files and logic in isolation, as sometimes spinning up the entire SDK can be cumbersome. Using subclasses and protocols we can inject mocked instances. The minimal framework allows creating readable assertion tests.

This has been a timeboxed experiment to evaluate the option of using this instead of a third-party mock SDK which can be bloated and bring in additional unwanted complexity.

🔮 Next steps

• Add testing for framework
• Add more documentation
• Support more than 3 arguments

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 9.053%. Comparing base (013aa42) to head (5675758).

❗ There is a different number of reports uploaded between BASE (013aa42) and HEAD (5675758). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (013aa42)	HEAD (5675758)
	2	1

Additional details and impacted files

@@                         Coverage Diff                          @@
##           philprime/manual-data-tracking    #4898        +/-   ##
====================================================================
- Coverage                          92.290%   9.053%   -83.238%     
====================================================================
  Files                                 661      352       -309     
  Lines                               77747    25052     -52695     
  Branches                            28010       94     -27916     
====================================================================
- Hits                                71753     2268     -69485     
- Misses                               5901    22784     +16883     
+ Partials                               93        0        -93     

see 652 files with indirect coverage changes

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