"@nomicfoundation/hardhat-foundry" breaks coverage tests.

[LucasGrasso]

Version of Hardhat

2.14.0

What happened?

I Don't know if this is a solidity-coverage or a hardhat-foundry issue, but after importing the latter, it just seems to break coverage tests.
With hardhat-foundry imported;

Without hardhat-foundry imported:

Tests in Foundry and in Hardhat were made for DecentBatchDepositor.sol. Sorry for the lack of a profound explanation, I just discovered it randomly and seems like a incompatibility bug. Thanks for your help.

Minimal reproduction steps

• Install and import "@nomicfoundation/hardhat-foundry" in hardhat.config.ts
• Run coverage tests with npx hardhat coverage
• Unimport "@nomicfoundation/hardhat-foundry" in hardhat.config.ts
• Run coverage tests once again with npx hardhat coverage

Search terms

foundry, coverage

[fvictorio]

Hey @LucasGrasso, sorry for not responding sooner.

I can't reproduce this, at least in the simple Hardhat sample project.

Can you try again with the latest versions of the plugins and see if it's still happening?

And if it's still happening, could you create and share a minimal reproducible example?

[LucasGrasso]

Hello @fvictorio , don't worry. As soon as I get some spare time I'll get to it.

[tariqkb]

@fvictorio I am able to reproduce this issue with the following minimal steps

1. hardhat init
2. npm install @nomicfoundation/hardhat-foundry
3. Add require("@nomicfoundation/hardhat-foundry") to hardhat.config.js
4. hardhat init-foundry (coverage will work until after this step)
5. hardhat coverage

Produces this report:

[fvictorio]

Thanks @tariqkb, you are right. I think I forgot to run hh init-foundry when I tried to reproduce this 🤦‍♂️

[gatekeeper-app]

Hi, I am getting the same issue, just wondering if there was any update. Thanks

[bingen]

I’m getting the same error. It seems that the problem is foundry.toml file. If I remove it, it works again.

[miguelmtzinf]

Same issue here

[partylikeits1983]

Hello all, I had this same exact issue. Removing the foundry.toml file in the base of the repository fixed this issue. Code coverage is no longer 0%

[cgewecke]

This should be fixed now in the latest solidity-coverage release:
https://github.com/sc-forks/solidity-coverage/releases/tag/v0.8.8

Make sure you run the clean task after you update:

npm install --save-dev solidity-coverage@latest
npx hardhat clean

If there are further problems after installing the patch please report to solidity-coverage issue 853

[miguelmtzinf]

works on my end! @cgewecke goat 🥇

[bingen]

It works for me too, thanks!
I’m now having problems with skipping contracts. I think this was working before, so may it be related?

[cgewecke]

@bingen Yes that sounds like it might be related - have opened a ticket about this in the coverage repo at the link above and will take a look later today.

[kanej]

I am going to close this, thanks @cgewecke