TypeError: Cannot read properties of undefined (reading 'fund'). [ lec 7 - 11:20:00]

[AYOO117]

FundMe.test.js

const { assert, expect } = require("chai")
const { network, deployments, ethers } = require("hardhat")
const { developmentChains } = require("../../helper-hardhat-config")
const { describe } = require("node:test")

describe("FundMe", function () {
    let fundMe
    let mockV3Aggregator
    let deployer
    const sendValue = ethers.utils.parseEther("1")
    beforeEach(async () => {
        // const accounts = await ethers.getSigners()
        // deployer = accounts[0]
        deployer = (await getNamedAccounts()).deployer
        await deployments.fixture(["all"])
        fundMe = await ethers.getContract("FundMe", deployer)
        mockV3Aggregator = await ethers.getContract(
            "MockV3Aggregator",
            deployer
        )
    })

    describe("constructor", function () {
        it("sets the aggregator addresses correctly", async () => {
            const response = await fundMe.getPriceFeed()
            assert.equal(response, mockV3Aggregator.address)
        })
    })
    describe("fund", async function () {
        await expect(fundMe.fund()).to.be.revertedWith(
            "need to spend more ETH!"
        )
    })
})

FundMe.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";
import "./PriceConverter.sol";

error FundMe__NotOwner();

contract FundMe {
    using PriceConverter for uint256;

    mapping(address => uint256) public addressToAmountFunded;
    address[] public funders;

    // Could we make this constant?  /* hint: no! We should make it immutable! */
    address public /* immutable */ i_owner;
    uint256 public constant MINIMUM_USD = 50 * 10 ** 18;
    
    AggregatorV3Interface public priceFeed;
     
    modifier onlyOwner {
        // require(msg.sender == owner);
        if (msg.sender != i_owner) revert FundMe__NotOwner();
        _;
    }

    constructor(address priceFeedAddress) {
        i_owner = msg.sender;
        priceFeed = AggregatorV3Interface (priceFeedAddress);
    }

 
    function fund() public payable {
        require(msg.value.getConversionRate(priceFeed) >= MINIMUM_USD, "You need to spend more ETH!");
        // require(PriceConverter.getConversionRate(msg.value) >= MINIMUM_USD, "You need to spend more ETH!");
        addressToAmountFunded[msg.sender] += msg.value;
        funders.push(msg.sender);
    }
  
    
    function withdraw() public onlyOwner {
        for (uint256 funderIndex=0; funderIndex < funders.length; funderIndex++){
            address funder = funders[funderIndex];
            addressToAmountFunded[funder] = 0;
        }
        funders = new address[](0);
       
        (bool callSuccess, ) = payable(msg.sender).call{value: address(this).balance}("");
        require(callSuccess, "Call failed");
    }
       function getPriceFeed() public view returns (AggregatorV3Interface) {
        return priceFeed;
    }


}

terminal: ayushsinghchauhan@Ayushs-MacBook-Air-4 hardhat-fund-me-fcc % yarn hardhat test 
yarn run v1.22.19
warning package.json: No license field
$ '/Users/ayushsinghchauhan/Desktop/lets  Code/hardhat-fund-me-fcc/node_modules/.bin/hardhat' test
▶ FundMe
  ✔ constructor (0.058041ms)
  ✖ fund (0.035125ms)
    TypeError: Cannot read properties of undefined (reading 'fund')
        at SuiteContext.<anonymous> (/Users/ayushsinghchauhan/Desktop/lets  Code/hardhat-fund-me-fcc/test/unit/FundMe.test.js:32:35)
        at Suite.runInAsyncScope (node:async_hooks:203:9)
        at new Suite (node:internal/test_runner/test:755:29)
        at Suite.createSubtest (node:internal/test_runner/test:368:18)
        at run (node:internal/test_runner/harness:196:28)
        at test (node:internal/test_runner/harness:203:39)
        at SuiteContext.<anonymous> (/Users/ayushsinghchauhan/Desktop/lets  Code/hardhat-fund-me-fcc/test/unit/FundMe.test.js:31:11)
        at Suite.runInAsyncScope (node:async_hooks:203:9)
        at new Suite (node:internal/test_runner/test:755:29)
        at Test.createSubtest (node:internal/test_runner/test:368:18)

▶ FundMe (0.776334ms)



  ✔ sets the aggregator addresses correctly

  1 passing (270ms)

✨  Done in 1.90s.
ayushsinghchauhan@Ayushs-MacBook-Air-4 hardhat-fund-me-fcc % ```

[alymurtazamemon]

@AYOO117 It looks like the fundMe reference is undefined, check it, otherwise please leave your repo link so I can check.

[AYOO117]

there was a blunder in code ,i missed a code line