Lesson 9: Staging test failed - Timeout of 500000ms

[samlak]

All my unit tests passed successfully and the deployment works fine.. Unfortunately, the staging test is not working as expected.
I got this error

Error: Timeout of 500000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (/Users/mac/Desktop/Project/hd-fcc/hardhat-lottery/test/staging/Raffle.staging.test.js)

This is Raffle.staging.test.js

const { assert, expect } = require("chai");
const { network, getNamedAccounts, 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 () => {
              deployer = (await getNamedAccounts()).deployer;
              raffle = await ethers.getContract("Raffle", deployer);
              raffleEntranceFee = await raffle.getEntranceFee();
          });

          describe("fulfillRandomWords", function () {
              it("works with live Chainlink Keepers and Chainlink VRF, we get a random winner", async function () {
                  console.log("Setting up test...");
                  const startingTimeStamp = await raffle.getLastTimeStamp();
                  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.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 (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();
              });
          });
      });

When the code reaches Setting up Listener... it stops working and takes long before the test failed. When I commented the Promise out everything works fine but the test failed if I leave the Promise. I think the problem is with the promise.

This is the link to the contract

@PatrickAlphaC and @ali-thegilfoyle What is the way out.

[alymurtazamemon]

@samlak You need to put the enterRaffle whole code inside promise and out of event lisenter.

[alymurtazamemon]

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.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 (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();
});

[samlak]

Thank you @ali-thegilfoyle It worked