Cannot deploy Unit Test for FundMe contract

[isosatya]

I am trying to deploy the Unit Test and it seems to work for the MockV3Aggregator, but not for my FundMe contract. The code in the video is different than the one in the repository, but either of them is working for me.

When normally deploying the contracts in Sepolia or Local network I have no issues. But the testing is just throwing error.
The deployment of FundMe seems to be the problem:

fundMe = await ethers.getContractAt("FundMe", deployer);

I am using ethers.getContractAt() because looks like getContract() is deprecated (I downgraded my Ethers version to 5 but still not able to find getContract()

Which is an extract from the beforeEach:

    beforeEach(async () => {

        const accounts = await ethers.getSigners();
        deployer = (await getNamedAccounts()).deployer;
        await deployments.fixture(["all"]);
        fundMe = await ethers.getContractAt("FundMe", deployer);

        mockV3Aggregator = await ethers.getContractAt(
            "MockV3Aggregator",
            deployer
        );
    });

When running "hardhat test" I get the following result:

Error: call revert exception [ See: https://links.ethers.org/v5-errors-CALL_EXCEPTION ] (method="priceFeed()", data="0x", errorArgs=null, errorName=null, errorSignature=null, reason=null, code=CALL_EXCEPTION, version=abi/5.7.0)

I thought it was something with the method/property priceFeed()but it is just throwing error for any property, which for me means the contracts is just not being deployed.

[isosatya]

Hope this format of discussion is good enough @PatrickAlphaC ;)

[alymurtazamemon]

@isosatya getContractAt is different than getContract. getContract is not deprecated instead it is a function of hardhat-deploy. You need to install these;

npm install -D hardhat-deploy @nomiclabs/hardhat-ethers@npm:hardhat-deploy-ethers ethers

and add this in you hardhat.configs.js file;

require('hardhat-deploy');

[isosatya]

Oh man it worked! I have been stuck with this for days... GREAT thank! Did I miss the part where Patrick talks about this 'hardhat-deploy' package?
I have a really hard time with finding any documentation for these kind of packages. And there are so many of them that need to be installed that it´s hard to keep track of all of them.

[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)

[alymurtazamemon]

@gradder7 Please follow this #5574