[Maintenance] Add Cypress code coverage to Codecov

[thetif]

Description and related issues

We would like to add the code coverage from Cypress to the Codecov tool

This task is done when…

• [ ] integrate Cypress code coverage reports into Codecov

Notes for Tif:

• https://docs.cypress.io/guides/tooling/code-coverage

• Only way I was able to get a code coverage report for /web/src/ was when I added this line of code to the babel config file in /web/

  • plugins = ['istanbul']
  • However, this breaks the frontend tests. Throws an error about duplicate plugins:

• What hasn't worked:

  • Using plugins = ['istanbul'] only in the /e2e/ babel config. This generates a code coverage report for code only within /e2e/
  • Using plugins = ['istanbul'] only in the root babel config. This doesn't cover any code.
  • Using nyc:
    • Cypress documentation only uses nyc to instrument the code. However, no matter where I put the instrumented code, cypress couldn't see it and didn't generate a report.

• Possible solutions:

  • Fix duplicate plugin error
  • Move Cypress into web? Then the instrumented code would be in the same directory? Not sure if this will work however.