Lesson 7 : AssertionError on FundMe.test.js

[Milot121]

this is my FundMe.test.js :

const { deployments, ethers, getNamedAccounts, network } = require("hardhat")
const { assert, expect } = require("chai")

describe("FundMe", function () {
    let fundMe
    let deployer
    let mockV3Aggregator
    beforeEach(async function () {
        // const account = await ethers.getSigners()
        // const accountOne = accounts[0]
        deployer = (await getNamedAccounts()).deployer
        await deployments.fixture(["all"])
        fundMe = await ethers.getContract("FundMe", deployer)
        mockV3Aggregator = await ethers.getContract(
            "MockV3Aggregator",
            deployer
        )
    })

    describe("constructor", async function () {
        it("sets the aggregator addresses correctly", async function () {
            const response = await fundMe.getPriceFeed()
            assert.equal(response, mockV3Aggregator.address)
        })
    })

    describe("fund", async function () {
        it("Fails if you dont send enough ETH"),
            async function () {
                await expect(fundMe.fund()).to.be.revertedWith(
                    "You need to spend more ETH!"
                )
            }
    })
})

this is the error :

  FundMe
    constructor

      1) sets the aggregator addresses correctly
    fund
      - Fails if you dont send enough ETH


  0 passing (872ms)
  1 pending
  1 failing

  1) FundMe
       constructor
         sets the aggregator addresses correctly:
     AssertionError: expected '0x5FbDB2315678afecb367f032d93F642f641…' to equal undefined
      at Context.<anonymous> (test\unit\FundMe.test.js:23:20)

[austinlight-aigeek]

If you're using hardhat v2.22.8 and solidity 0.8.24, try with this one.

describe("FundMe", function () {
  let fundMe;
  let deployer;
  let mockV3Aggregator;

  beforeEach(async function () {
    // deploy FundMe contract using hardhat deploy
    // const accounts = await ethers.getSigners();
    // const accountZero = accounts[0];

    deployer = (await getNamedAccounts()).deployer;
    await deployments.fixture(["all"]);

    const fundMeDeployment = await deployments.get("FundMe");
    fundMe = await ethers.getContractAt(
      "FundMe",
      fundMeDeployment.address,
      deployer
    );

    const mockV3AggregatorDeployment = await deployments.get(
      "MockV3Aggregator"
    );
    mockV3Aggregator = await ethers.getContractAt(
      "MockV3Aggregator",
      mockV3AggregatorDeployment.address,
      deployer
    );
  });

  describe("constructor", function () {
    it("sets the aggregator address correctly", async function () {
      const response = fundMe.priceFeed;
      assert.equal(response, mockV3Aggregator.address);
    });
  });
});

[wasim007choudhary]

const { deployments, getNamedAccounts, ethers } = require("hardhat")
const { assert } = require("chai")

describe("Fundme", function () {
    let fundMe
    let mockV3Aggregator
    let deployer

    beforeEach(async function () {
        deployer = (await getNamedAccounts()).deployer

        // Deploy all contracts including mocks
        await deployments.fixture(["all"])

        // Get the deployed contracts
        fundMe = await deployments.get("Fundme") // Use deployments.get for deployed contracts
        mockV3Aggregator = await deployments.get("MockV3Aggregator") // Use deployments.get for deployed contracts

        // Attach ethers to the deployed contract
        fundMe = await ethers.getContractAt("Fundme", fundMe.address) // Get contract instance
        mockV3Aggregator = await ethers.getContractAt(
            "MockV3Aggregator",
            mockV3Aggregator.address,
        ) // Get contract instance
    })

    describe("constructor", function () {
        it("sets the aggregator address correctly", async () => {
            // Check if the price feed address in the FundMe contract is correct
            const response = await fundMe.pricefeed()
            assert.equal(response, mockV3Aggregator.address)
        })
    })
})

try this it will work for sure
but be sure to run this in the terminal

yarn add --dev hardhat-deploy @nomiclabs/hardhat-ethers@npm:hardhat-deploy-ethers ethers\n

if you use npm then use npm and it will work like a charm