Lesson 9 hardhat raffle staging test error: No Contract deployed with name VRFCoordinatorV2Mock

[anooj1]

when I test my tests on GOERLI network, it shows an Error that reads: ** 1) Raffle Unit Tests
"before each" hook for "works with live Chainlink Keepers and Chainlink VRF, we get a random winner":
Error: No Contract deployed with name VRFCoordinatorV2Mock
at Object.getContract (node_modules/@nomiclabs/hardhat-ethers/src/internal/helpers.ts:447:11)
at processTicksAndRejections (node:internal/process/task_queues:96:5)
at Context. (test/staging/Raffle.staging.test.js:15:38)

const { inputToConfig } = require("@ethereum-waffle/compiler")
const { assert, expect } = require("chai")
const { network, getNamedAccounts, deployments, ethers } = require("hardhat")
const { developmentChains, networkConfig } = require("../../helper-hardhat-config")

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

          beforeEach(async function () {
              deployer = (await getNamedAccounts()).deployer
              await deployments.fixture(["all"])
              raffle = await ethers.getContract("Raffle", deployer)
              vrfCoordinatorV2Mock = await ethers.getContract("VRFCoordinatorV2Mock", deployer)
              raffleEntranceFee = await raffle.getEntranceFee()
          })
          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...")
                  await deployments.fixture(["mocks"])
                  const startingTimeStamp = await raffle.getLastTimeStamp()
                  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 {
                             
                              const recentWinner = await raffle.getRecentWinner()
                              const raffleState = await raffle.getRaffleState()
                              const winnerEndingBalance = await accounts[0].getBalance()
                              const endingTimeStamp = await raffle.getLastTimeStamp()

                              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(error)
                          }
                      })
                      // 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()

                      // and this code WONT complete until our listener has finished listening!
                  })
              })
          })
      })

Can anyone help me out with these, here's the link to my repo: https://github.com/anooj1/hardhat-raffle

[Koowah]

Hi @anooj1 ,

It is normal you get this error. You should use await ethers.getContractAt("abi", "address", deployer) with "abi" the abi or the name of the contract interface (that should be compiled in your hardhat project) and "address" the address of the contract in Goerli. Hardhat and ethers.js cannot guess the address of the VRFCoordinatorV2 if you don't provide it !

Also, when working in Goerli network, you won't be using mocks anymore. You'll be using the actual VRFCoordinatorV2 deployed by chainlink. So go to their docs to find the address and use it to get the contract.

Hope that helps,
Cheers 😄

[anooj1]

and

 it("reverts when checkUpkeep is false", async function () {
                  await expect(raffle.performUpkeep("0x")).to.be.revertedWith(
                      "Raffle_UpkeepNotNeeded"
                  )
              })

here the error is: AssertionError: Expected transaction to be reverted
+ expected - actual

  -Transaction NOT reverted.
  +Transaction reverted.

as someone suggested, I tried using revertedWithCustomError() instead of revertedWith() but it shows Error: Invalid Chai property: revertedWithCustomError

[Koowah]

I am facing some other errors with my unit testing:

describe("constructor", function () {
              it("initializes the raffle correctly", async function () {
                  // ideally we make our tests have 1 assert per "it"
                  const raffleState = await raffle.getRaffleState()
                  assert.equal(raffleState.toString(), "0")
                  assert.equal(interval.toString(), networkConfig[chainId]["interval"])
              })
          })

here the error is: ** 1) Raffle Unit Tests constructor initializes the raffle correctly: AssertionError: expected '50' to equal undefined**

There's a problem with your networkConfig[chainId]["interval"]. You should console.log your chainId and your networkConfig[chainId], make sure the values make sense. Also commit your last version of the code to github; currently your helper-config has an interval value of 30 and I can't see your second test.

[Koowah]

as someone suggested, I tried using revertedWithCustomError() instead of revertedWith() but it shows Error: Invalid Chai property: revertedWithCustomError

You can only use revertedWithCustomError() if you've installed hardhat-chai-matchers. You're currently using ethereum Waffle. Just keep using revertedWith() for the moment.

[anooj1]

okay the first problem was solved, however the second error still persists if I use revertedWith()

[DorianDaSilva]

@anooj1 you can try to running using await expect(raffle.performUpkeep("0x")).to.be.reverted( ) without With or "Raffle_UpkeepNotNeeded"

[DorianDaSilva]

@anooj1 Did you install chainlink contracts v4 in vscode?

[anooj1]

yes I did

[Yash112002]

I was facing the same problem. Use await deployments.fixture(["mocks", "raffle"]) instead of await deployments.fixture(["all"]).
I works for me.