Lesson 9: Listener not resolving - TimeOut Error

[DorianDaSilva]

==============================================================================

Problem:

Code runs properly until listener tries to listen to raffle.once("WinnerPicked", async () => { }

• It fails to resolve the try/catch block
• It fails to call upkeep but calls vrf succesfully (transactions for 0.1 ETH registered)

Error:

Error: Timeout of 500000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves.

=============================================================================

Code Block:

          describe("fulfillRandomWords", function () {
              it("works with live Chainlink Keepers and Chainlink VRF, we get a random winner", async function () {
                  // enter the raffle
                  console.log("Setting up test...")
                  const startingTimeStamp = await raffle.getLatestTimeStamp()
                  const accounts = await ethers.getSigners()

                  console.log("Setting up Listener...")
                  await new Promise(async (resolve, reject) => {
                      // setup listener before we enter the raffle
                      // Just in case the blockchain moves REALLY fast
                      raffle.once("WinnerPicked", async () => {
                          console.log("WinnerPicked event fired!")
                          try {
                              // add our asserts here
                              const recentWinner = await raffle.getRecentWinner()
                              const raffleState = await raffle.getRaffleState()
                              const winnerEndingBalance = await accounts[0].getBalance()
                              const endingTimeStamp = await raffle.getLatestTimeStamp()


                              await expect(raffle.getPlayer(0)).to.be.reverted
                              assert.equal(recentWinner.toString(), accounts[0].address)
                              assert.equal(raffleState, 0)
                              assert.equal(
                                  winnerEndingBalance.toString(),
                                  winnerStartingBalance.add(raffleEntranceFee).toString()
                              )
                              assert(endingTimeStamp > startingTimeStamp)
                              resolve()
                          } catch (error) {
                              console.log(error)
                              reject(e)
                          }
                      })

                      // Then entering the raffle
                      console.log("Entering Raffle...")
                      const tx = await raffle.enterRaffle({ value: raffleEntranceFee })
                      await tx.wait(1)
                      console.log("Ok, time to wait...")
                      const winnerStartingBalance = await accounts[0].getBalance()
                      console.log("All Good here!!!")
                      // and this code WONT complete until our listener has finished listening!
                  })
              })
          })
      })

===========================================================================

Solutions Attempted:

• GitHub conversation: Lesson 9: Staging test is getting timeout error (Chainlink issue). #729
  | When removed alters the code and functionality & does not fix the problem in my case

(bool upkeepNeeded, ) = checkUpkeep("");
      if (!upkeepNeeded) {
          revert Raffle__UpkeepNotNeeded(
              address(this).balance,
              s_players.length,
              uint256(s_raffleState)
          );
      }

• GitHub conversation: Lesson 9: Staging test "Time out" error #967
• Google search + Forums

| 5 days spent researching a solution but still no success...

===========================================================================

I would appreciate if someone could help me figure out how to fix the problem block or code so it runs as originally intended.

Thank you!

[alymurtazamemon]

@DorianDaSilva Are you funding a subscription in the deploy raffle?

[alymurtazamemon]

@DorianDaSilva Yes, do not worry, the above one does not fix the issue just shows the terminal. Did you see that console message that you add after emit event?

[DorianDaSilva]

@ali-thegilfoyle No, it did not print anything, only returned error msg

[alymurtazamemon]

@DorianDaSilva Then please check the vrf and keepers configurations because it is problem from that side and that's why I was not able to detect an issue.

[DorianDaSilva]

@ali-thegilfoyle created new subscription with new consumer & used consumer address to create new upkeep. Still not working...Tried to deploy Raffle.sol to rinkeby in order to get contract address from testnet but raffle is not deploying (Not even on remix using the course repo raffle.sol contract)...Also, cloned the course repo and installed all dependencies but it is returning that rinkeby doesn't exist...I am starting to believe that rinkeby is deprecated on alchemy so i will try with ropsten or goerli to see if it works...Thank you for taking the time to help anyways, still appreciate it.

[s-jj]

@DorianDaSilva Did you make any progress on this? I believe I have the exact same issue

[ihasanreza]

I resolved this problem by adding view while defining the checkUpkeep function. I hope it helps you too.

Here's how my checkUpkeep function looks:
Raffle.sol

function checkUpkeep(
        bytes memory /* checkData */
    )
        public
        view // <----------- I added this
        override
        returns (
            bool upkeepNeeded,
            bytes memory /* performData */
        )
    {
        bool timePassed = ((block.timestamp - s_lastTimeStamp) > i_interval);
        bool isOpen = s_raffleState == RaffleState.OPEN;
        bool hasPlayers = s_players.length > 0;
        bool hasBalance = address(this).balance > 0;
        upkeepNeeded = (timePassed && isOpen && hasPlayers && hasBalance);
    }

my staging test looks like this:
Raffle.staging.test.js

const { assert, expect } = require("chai")
const { network, getNamedAccounts, ethers } = require("hardhat")
const { developmentChains } = require("../../helper-hardhat-config")

developmentChains.includes(network.name)
    ? describe.skip
    : describe("Raffle Staging Tests", function () {
          let raffle, deployer, raffleEntranceFee

          beforeEach(async function () {
              deployer = (await getNamedAccounts()).deployer
              raffle = await ethers.getContract("Raffle", deployer)
              raffleEntranceFee = await raffle.getEntraceFee()
          })

          describe("fulfillRandomWords", function () {
              it("works with live Chainlink Keepers and Chainlink VRF, we get a random winnder", async function () {
                  // enter raffle/lottery
                  console.log("Setting up test...")
                  const startingTimeStamp = await raffle.getLatestTimeStamp()
                  const accounts = await ethers.getSigners()

                  console.log("Setting up Listener...")

                  await new Promise(async (resolve, reject) => {
                      raffle.once("WinnerPicked", async () => {
                          console.log("WinnerPicked event fired!")
                          try {
                              const recentWinner = await raffle.getRecentWinner()
                              const raffleState = await raffle.getRaffleState()
                              const winnerEndingBalance = await accounts[0].getBalance()
                              const endingTimeStamp = await raffle.getLatestTimeStamp()

                              await expect(raffle.getPlayer(0)).to.be.reverted
                              assert.equal(recentWinner.toString(), accounts[0].address)
                              assert.equal(raffleState, 0)
                              assert.equal(
                                  winnerEndingBalance.toString(),
                                  winnerStartingBalance.add(raffleEntranceFee).toString()
                              )
                              assert(endingTimeStamp > startingTimeStamp)
                              resolve()
                          } catch (e) {
                              console.log(e)
                              reject(e)
                          }
                      })
                      console.log("Entering Raffle...")
                      const tx = await raffle.enterRaffle({ value: raffleEntranceFee })
                      await tx.wait(1)
                      console.log("Ok, time to wait...")
                      const winnerStartingBalance = await accounts[0].getBalance()
                  })
              })
          })
      })

and helper file like this:
helper-hardhat-config.js

const { ethers } = require("hardhat")

const networkConfig = {
    // we use helper-hardhat-config for our mocks
    4: {
        name: "rinkeby",
        vrfCoordinatorV2: "0x6168499c0cFfCaCD319c818142124B7A15E857ab",
        entranceFee: ethers.utils.parseEther("0.01"),
        gasLane: "0xd89b2bf150e3b9e13446986e571fb9cab24b13cea0a43ea20a6049a85cc807cc", // 30 gwei
        subscriptionId: "9400", // required!
        // required to setup Chainlink Keepers
        callbackGasLimit: "500000", // 500k
        interval: "30",
    },
    31337: {
        name: "hardhat",
        entranceFee: ethers.utils.parseEther("0.01"),
        gasLane: "0xd89b2bf150e3b9e13446986e571fb9cab24b13cea0a43ea20a6049a85cc807cc", // we don't need to specify it, our mock will automatically do it for us. We can put any value here
        callbackGasLimit: "500000",
        interval: "30",
    },
}

const developmentChains = ["hardhat", "localhost"]

module.exports = {
    networkConfig,
    developmentChains,
}

[DorianDaSilva]

@ihasanreza Hey Hasan, thank you so much for this man...It seems we have exactly the same code so it seems the issue maybe with vrf, keepers and Rinkeby on my end. I used Raffle address to create consumer in vrf then used that consumer address to register new upkeep. Contracts deployed fine on rinkeby, unit test ran no problems but I still get time out pushing to mocha to 500000

[ghost]

It seems as if there is no correct solution, because most people have this error and it is not solved

[0xCardiE]

Cross-referencing this post with this one as it has similar issue. I found a bug with code in video so I debug what works and what doesn't in a few cases. Check the thread.
#202 (reply in thread)

[DorianDaSilva]

@adriadrop I appreciate the info but none of these solutions worked for me when tested. Still looking for a fix.

[diasgab]

Adding "view" to checkUpkeep fixed the issue for me. Of course I had to deploy the contract again and create the subscriptions and add the contract as vrf consumer. Thank you for this!