brownie test --coverage produces empty json file - Tested with every brownie release since 1.15.2 - With A / B Test

[GalloDaSballo]

The following issue shows 2 sets of code that are really similar, however, one version of the code works with --coverage as intended, while the second breaks the system for some reason

TL;DR
main -> Coverage works
feat-dust-handling -> Coverage doesn't work and sets up an empty file that looks like this:

{
  "coverage": {},
  "highlights": {
    "branches": {},
    "statements": {}
  },
  "sha1": {}
}

Repository: https://github.com/GalloDaSballo/badger-onchain-rewards

Environment information

• brownie Version: 1.15 upwards to 1.19.0
• ganache-cli 6.12.2
• solc Version: 0.8.12
• Python Version: 3.9
• OS: osx/linux/win: Mac

What was wrong?

Running tests with --coverage flag produces empty json object.

I've tried with every brownie version since 1.15.2 and all tests run and pass properly, but coverage .json file is a bunch of empty json data.

Please include information like:

Has been tried by multiple devs, with the code in this repository:
https://github.com/GalloDaSballo/badger-onchain-rewards/tree/feat-dust-handling

Coverage does work for:
https://github.com/GalloDaSballo/badger-onchain-rewards/tree/b0.1

• what command you ran -> brownie test --coverage

How can it be fixed?

I have no clue but assume that the differences between the two code-bases (which are very minor) should help you shed light into this pretty obscure behaviour