Lesson 9 - Staging Test Promise Not Resolving

[JussaMouse]

VRF and Keepers are working, WinnerPicked event is firing, and it seems like everything is working. BUT, after all that happens, the test just hangs. It never outputs the pass/ fail report and terminates. I have tried swapping out my code with a copy/paste of the Raffle.staging.test.js from the github here and that didn't work either. I have added a console.log after every "await" inside the promise and they all output as expected. Can anyone tell me why my resolve() is apparently never hitting?

Raffle.staging.test.js:

const { getNamedAccounts, deployments, ethers, network } = require("hardhat");
const { developmentChains, networkConfig } = require("../../helper-hardhat-config");

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

          beforeEach(async function () {
              deployer = (await getNamedAccounts()).deployer;
              raffle = await ethers.getContract("Raffle", deployer);
              raffleEntranceFee = await raffle.getEntranceFee();
          });
          describe("fulfillRandomWords", function () {
              it("Works with live Chainlink Keepers and live Chainlink VRF/ gives random winner", async function () {
                  console.log("Setting up test...");
                  const startingTimestamp = await raffle.getLatestTimestamp();
                  console.log(`startingTimestamp: ${startingTimestamp.toString()}`);
                  const accounts = await ethers.getSigners();
                  console.log(`accounts[0]: ${accounts[0].address}`);

                  console.log("Setting up Listener...");
                  await new Promise(async (resolve, reject) => {
                      // set up the listener before we enter the raffle
                      raffle.once("winnerPicked", async () => {
                          console.log("winnerPicked event fired!");
                          try {
                              // asserts go here
                              const recentWinner = await raffle.getRecentWinner();
                              console.log(`recentWinner: ${recentWinner}`);
                              const raffleState = await raffle.getRaffleState();
                              console.log(`raffleState: ${raffleState}`);
                              const winnerEndingBalance = await accounts[0].getBalance();
                              console.log(`winnerEndingBalance: ${winnerEndingBalance.toString()}`);
                              const endingTimestamp = await raffle.getLatestTimestamp();
                              console.log(`endingTimestamp: ${endingTimestamp}`);

                              // one  way to check if the raffle has been reset:
                              // 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);
                          }
                      });
                      //enter the raffle here
                      console.log("Entering the raffle");
                      const tx = await raffle.enterRaffle({ value: raffleEntranceFee });
                      console.log("OK time to wait...");
                      await tx.wait(1);
                      const winnerStartingBalance = await accounts[0].getBalance();
                      console.log(`winnerStartingBalance: ${winnerStartingBalance.toString()}`);
                  });
              });
          });
      });

Terminal output:

  Raffle Staging Test
    fulfillRandomWords
Setting up test...
startingTimestamp: 1666843656
accounts[0]: 0x62F6eb210af5d1E9d4C37bDae35F5Cd95E10E50d
Setting up Listener...
Entering the raffle
OK time to wait...
winnerStartingBalance: 770371144709389151
winnerPicked event fired!
recentWinner: 0x62F6eb210af5d1E9d4C37bDae35F5Cd95E10E50d
raffleState: 0
winnerEndingBalance: 780371144709389151
endingTimestamp: 1666849248

Then it just hangs until the mocha timeout forever (edited). Any tips would be very appreciated!

[alymurtazamemon]

@JussaMouse here you should also add console.log statements to see the location of error.

assert.equal(recentWinner.toString(), accounts[0].address);
console.log("Checkpoint 1");
assert.equal(raffleState, 0);
console.log("Checkpoint 2");
assert.equal(
    winnerEndingBalance.toString(),
    winnerStartingBalance.add(raffleEntranceFee).toString()
);
console.log("Checkpoint 3");
assert(endingTimestamp > startingTimestamp);
console.log("Checkpoint 4");
resolve();

[alymurtazamemon]

@JussaMouse Is it the correct code? because this code has even issues in the deploy scripts, so how did you reach to staging tests?

[JussaMouse]

Yes. I do believe that deploy script is the one I used to deploy the contract here: https://goerli.etherscan.io/address/0x7a391a66e764daf9ce41a4b901b5b6348d37115b

[JussaMouse]

I cleaned up the deploy script. But when I ran deploy again it just said "reusing 0x7a391a66e764daf9ce41a4b901b5b6348d37115b" instead of publishing it to a new address.

[AGMASO]

I'm having the same issue. Everything working and passing till it hangs on the resolve(). The Promise is not ending, neither Rejecting or Resolving. Some idea why?

I´m getting also issue with the assert.equal of endingBalance == to startingBalance.add(fee).

Thank you in advance

[rajesh-kumar-k]

i am also facing same issue, test is getting struck at promise function.

[chopperttt]

mine still doesnt work after checking all the related threads and fixes, can someone help?
my repo: https://github.com/AnneBBB/hardhat-smartcontract-lottery-fcc

[alymurtazamemon]

@AnneBBB Hey! Please create a new discussion and post your query with the complete information about error or any issue you are facing and tag me so I can help you. Thanks.

[siddharth-chauhan-it]

After hours of debugging in vscode javascript debug terminal, I found the fix.
The promise does get resolved and flow of control goes back to mocha and hardhat.

The issue is with the gas reporter.
While running the staging test, DISABLE THE GAS REPORTER!!!

In your hardhat.config.js:

gasReporter: {
    enabled: false, // disable for staging test
    outputFile: "gas-report.text",
    noColors: true,
    currency: "USD",
    coinmarketcap: COINMARKETCAP_API_KEY,
    token: "ETH",
  },