Lesson 7 - Bug deletes constructor in Artifacts

[DorianDaSilva]

When running the cmd:
| $ yarn hardhat test

and/or
| $ yarn hardhat coverage

It sometimes returns the following error:
| Expected 0 arguments but got 2

To correct this error I had to add manuall the constructor inside of
| Artifacts/contracts/test/MockV3Aggregator.json

As such

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The bug is that every time I run test or coverage the 5 tests initially pass (As sseen below) but if I repeat the action the constructor gets deleted from artifacts or the terminal thows some random error forcing me to once again enter the constructor manually into artifacts or even uninstall/reinstall vscode to get it working again (Sometimes the pragma stops working bcz compiler version changes randomly)

Any thoughts on what could be causing this bug? Is this a hardhat issue that I should report?

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Thank you!

[PatrickAlphaC]

wtf

uh.... yeah... It might be good to try to pinpoint a little more what's going on... Like can you get it down to just one test? Can you repeat it on a smaller project?

[DorianDaSilva]

@PatrickAlphaC That's the problem, it happens randomly...I have tried running them individually and together, sometimes the test runs perfectly and if I run the same test again I get the error or constructor data gets deleted or pragma version changes.

After resetting or reinstall it works fine for a while and then eventually I get the same error, even on tests that passed multiple times. I can share my script if that helps. Thank you!

[PatrickAlphaC]

So odd... if you can try to pinpoint what's gong on that would be helpful. If you can reproduce on one test, that would be best.

[DorianDaSilva]

@PatrickAlphaC I am not sure, it is working normally again. Seems to be a bug in my vscode or hardhat. I managed to finish lesson 7 with no major issues from it. Thank you for the help & course!

[PatrickAlphaC]

so odd... well glad you're moving forward!

[djimenezdev]

It is such a weird issue. As I have just encountered that with the hardhat lottery Raffle Contract. I just created a Token contract in the same project allowing users to enter the lottery with the custom token instead of testnet eth and whoever is selected will win testnet eth that the contract owner supplies to the contract. It generates the constructor abi info no problem for the token contract as well as for the mocks but for some reason for the Raffle contract it does not. I believe it is a hardhat bug