Lesson 9. Unit testing: Error: Timeout of 200000ms exceeded. It("picks a winner, reset the lottery, and send money")

[muhammet72]

.
Error

Lottery
       fulfillRandomWords
         picks a winner, reset the lottery, and send money:
     Error: Timeout of 200000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (/home/code/hardhat-smartContract-lottery/test/unit/Lottery.test.js)

---

code

`
it("picks a winner, reset the lottery, and send money", async () => {
const additionalEntrants = 3
const startingAccountIndex = 1 // deployer = 0
const accounts = await ethers.getSigners()
for (let i = startingAccountIndex; i < startingAccountIndex + additionalEntrants; i++) {
const accountConnectedLottery = lottery.connect(accounts[i])
await accountConnectedLottery.enterLottery({ value: lotteryEntranceFee })
}
const startingTimeStamp = await lottery.getLatestTimeStamp()
// performUpkeep (mock being chainlink keeper)
// fulfilledRandomWords (mock being chainlink VRF)
// we will have to wait for fulfilledRandomWords to be called
await new Promise(async (resolve, reject) => {
lottery.once("winnerPicked", async () => {
console.log("Found the event!")
try {
const recentWinner = await lottery.getRecentWinner()
const lotteryState = await lottery.getLotteryState()
const endingTimeStamp = await lottery.getLatestTimeStamp()
const numPlayers = await lottery.getNumPlayers()
const winnerEndingBalance = await accounts[1].getBalance()

            console.log(recentWinner)
            console.log(accounts[0].address)
            console.log(accounts[1].address)
            console.log(accounts[2].address)
            console.log(accounts[3].address)

            assert.equal(numPlayers.toString(), "0")
            assert.equal(lotteryState.toString(), "0")
            assert.equal(endingTimeStamp > startingTimeStamp)
            assert.equal(
              winnerEndingBalance.toString(),
              winnerStartingBalance.add(
                lotteryEntranceFee.mul(additionalEntrants).add(lotteryEntranceFee).toString()
              )
            )
            resolve()
          } catch (e) {
            reject(e)
          }
        })
        // setting up the listener
        //below, we will fire the event, and the listener will pick it up , and resolve
        const tx = await lottery.performUpkeep([])
        const txReciept = await tx.wait(1)
        const winnerStartingBalance = await accounts[1].getBalance()
        await vrfCoordinatorV2Mock.fulfillRandomWords(
          txReciept.events[1].args.requestId,
          lottery.address
        )
      })
    })

`

• only this test I get error , other are fine

[Shobhit-Nagpal]

Hey, did you happen to find any answer to the error?

[Gandouye]

Error: Timeout of 400000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves.
It took me some time but I went step by step to fix it.
Finally, I saw it was an issue with the latest version of hardhat, ethers…
I am using the latest versions… "ethers": "^6.10.0», «hardhat": "^2.19.4", solidity ^0.8.19
The whole solution could be found at my repo: My Repo or directly at the raffle.staging.test.js @raffle.staging.test.js
Mainly changes in the latest versions… please note the main changes:

const raffleAddress = (await deployments.get("Raffle")).address
raffle = await ethers.getContractAt("Raffle", raffleAddress) //instead of getContract

setTimeout(resolve, 5000)                      
raffle.on("WinnerPicked", async () => { // instead of raffle.once

Hope this will help.

[TucanCrypto]

If you want I have the solution for ethers v6 but I suppose it's similar for ethers v5

[nabeel-ahmed004]

Hey @TucanCrypto, can you give the answer?