DXCDT-378: Keyword Replacement E2E Tests

[willvedd]

🔧 Changes

As we embark on work to address #328 , it is important to not introduce any regressions with the current keyword replacement functionality. While this functionality has a decent amount of unit-testing, the coverage in our end-to-end tests are lacking. This PR introduces a baseline of testing to fill this gap.

Notably, this PR found a bug that prevents the usage of the @@ array replacement syntax with the directory format (pointed out in comment below). Which just further highlights the need for this testing. Update: This was actually a mistake in the implementation of the E2E test and has been corrected in a separate commit!

🔬 Testing

This PR only introduces testing additions.

📝 Checklist

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)

[willvedd]

It was discovered during this work that the @@ array syntax does not work for directory formats. It does work for the YAML handler though. This will need to be addressed in a follow-up PR.

[willvedd]

Update: Actually, this is a mistake with how I did the E2E test originally and has since been fixed.

[sergiught]

Great work here 💪🏻

Just left suggestions to add new empty lines at the end of each test data file.

[codecov-commenter]

Codecov Report

Base: 83.60% // Head: 83.60% // No change to project coverage 👍

Coverage data is based on head (10f7a26) compared to base (0221678).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #735   +/-   ##
=======================================
  Coverage   83.60%   83.60%           
=======================================
  Files         114      114           
  Lines        3379     3379           
  Branches      628      628           
=======================================
  Hits         2825     2825           
  Misses        324      324           
  Partials      230      230           

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