Lesson9: unit test alternative

[chopperttt]

for the it("returns false if raffle isnt open" test, can we do the following instead of what is shown in the video?

it("returns false if raffle isnt open", async function () {
    await raffle.enterRaffle({ value: raffleEntranceFee })
    await network.provider.send("evm_increaseTime", [interval.toNumber() + 1])
    await network.provider.send("evm_mine", []) //mine one extra block
    await raffle.performUpkeep([])
    await expect(
        raffle.enterRaffle({ value: raffleEntranceFee })
    ).to.be.revertedWithCustomError(raffle, "Raffle__NotOpen")
})

[alymurtazamemon]

@AnneBBB Is it the checkUpkeep test?

[chopperttt]

yes i used chai-matchers instead of waffle

[Nlferu]

Hmm I have installed "@nomicfoundation/hardhat-chai-matchers": "^1.0.6" and in my Raffle.test.js I'm importing same things and I'm still getting error Error: Invalid Chai property: revertedWithCustomError. My package.json is the same as yours also.

@alymurtazamemon, @AnneBBB any idea why is that?

[Nlferu]

Ok nevermind, I have just added require("@nomicfoundation/hardhat-chai-matchers") in hardhat.config.js and disabled hardhat-waffle and it works now.. Thanks @AnneBBB !

[alymurtazamemon]

@AnneBBB For your query, yes this way you can pass the test because if the raffle is not open obviously we cannot enter in that duration but here our purpose is to test the checkUpkeep function which is not testing this way. So the actual test which Patrick uses is the right way to test the checkUpkeep. Hope it answers the question!

[chopperttt]

I see... thanks!