FI-3475: Unit testing improvements

[Jammjammjamm]

This branch factors out common unit testing behaviors. For a demonstration of a test kit using this functionality, see inferno-framework/subscriptions-test-kit#13

The template has also been updated to use these shared behaviors. If you generate a new test kit, comment out the inferno_core requirement in the gemspec, and point at this inferno_core branch in the Gemfile, the unit tests should pass in the created test kit.

[codecov]

Codecov Report

Attention: Patch coverage is 85.71429% with 1 line in your changes missing coverage. Please review.

Project coverage is 84.05%. Comparing base (050f4e8) to head (8d83a85).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/inferno/dsl/resume_test_route.rb	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #559      +/-   ##
==========================================
- Coverage   84.05%   84.05%   -0.01%     
==========================================
  Files         262      262              
  Lines       11409    11415       +6     
  Branches     1255     1256       +1     
==========================================
+ Hits         9590     9595       +5     
- Misses       1809     1810       +1     
  Partials       10       10              

Flag	Coverage Δ
backend	92.17% <85.71%> (-0.02%)	⬇️
frontend	79.31% <ø> (ø)

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[karlnaden]

looks good to me. How much do existing spec tests need to change to work with this? Should existing tests override this added context, or will they need to be updated to align?

[Shaumik-Ashraf]

Tested this inferno_core and a test kit created by inferno new and both worked.

[Jammjammjamm]

How much do existing spec tests need to change to work with this? Should existing tests override this added context, or will they need to be updated to align?

It shouldn't interfere with existing specs, as demonstrated in this PR: inferno-framework/subscriptions-test-kit#13