Getting error in lesson 7 unit testing please help.

[gradder7]

Hi guys, I tried all the steps that you suggested still getting errors. please help me i am stuck here form last 1 day.
For reference my repo link:-https://github.com/gradder7/hardhatFundMe

my test file

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

describe("FundMe", async () => {
  let fundMe;
  let deployer;
  let mockV3Aggreator;
  beforeEach(async () => {
    //deploy  our fund me contract using hardhat deploy
    deployer = (await getNamedAccounts()).deployer;
    // run our entire folder as many as tags we want
    await deployments.fixture(["all"]);
    // get the recent deployment what we have done
    fundMe = await ethers.getContract("FundMe", deployer);
    mockV3Aggreator = await ethers.getContract("MockV3Aggregator", deployer);
  });
  describe("constructor", async () => {
    it("sets the aggregator address correctly", async () => {
      const response = await fundMe.pricefeed();
      assert.equal(response, mockV3Aggreator.address);
    });
  });
});

my pakage.json

{
  "name": "hardhatfundme",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "@nomiclabs/hardhat-ethers": "npm:hardhat-deploy-ethers@^0.3.0-beta.13",
    "ethers": "^5.7.2",
    "hardhat": "^2.15.0",
    "hardhat-deploy": "^0.11.31"
  },
  "dependencies": {
    "@chainlink/contracts": "^0.6.1",
    "@nomicfoundation/hardhat-toolbox": "^3.0.0",
    "dotenv": "^16.3.1"
  }
}

errror

  FundMe
    constructor
==> 31337

      1) "before each" hook for "sets the aggregator address correctly"


  0 passing (2s)
  1 failing

  1) FundMe
       "before each" hook for "sets the aggregator address correctly":
     TypeError: ethers.getContract is not a function
      at Context.<anonymous> (test\unit\Fundme.test.js:14:27)
      at processTicksAndRejections (node:internal/process/task_queues:96:5)
      at runNextTicks (node:internal/process/task_queues:65:3)
      at listOnTimeout (node:internal/timers:528:9)
      at processTimers (node:internal/timers:502:7)

[pacelliv]

Hello @gradder7 in line 121 you created a getter called getPriceFeed. This is the method you need to call to get the address of the MockV3Aggregator.

You test should look like this:

    it("sets the aggregator address correctly", async () => {
      const response = await fundMe.getPriceFeed();
      assert.equal(response, mockV3Aggreator.address);
    });

[gradder7]

Hello, @pacelliv thanks for highlighting the mistake but the same error is occurring.
if you have a solution please help me i am stuck here.

[alfaqi]

1- The issue with ethers library is that has more than one package.
you can decrease the version of hardhat-toolbox to 2.0.2 in package.json file
from this:
"@nomicfoundation/hardhat-toolbox": "^3.0.0",
to this:
"@nomicfoundation/hardhat-toolbox": "^2.0.2",
and it works fine,
this is NOT the perfect solution, but it works.

2- change the name of pricefeed() to getPriceFeed()
from
const response = await fundMe.pricefeed();
to
const response = await fundMe.getPriceFeed();