Lesson 7 TypeError: Cannot read properties of undefined (reading 'getContract')

[paulcoffee85]

Not sure if it's line 18 in FundMe.test.js or another connected file. From one other discussion the resolve was yarn add @nomiclabs/hardhat-ethers and/or misspelling of contract names. But not working for me or an issue
I would really like to know if it's possibly in any folder/file or just in FundMe.test.js.

Terminal OUTPUT

$ yarn hardhat test
yarn run v1.22.19
$ C:\Users\paulc\hardhat-fund-me-fcc\node_modules\.bin\hardhat test

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

 0 passing (3s)
 1 failing

1) FundMe
      "before each" hook for "sets the aggregator address correctly":
    TypeError: Cannot read properties of undefined (reading 'getContract')
     at Context.<anonymous> (test\unit\**_FundMe.test.js:18:31)_**
     at processTicksAndRejections (node:internal/process/task_queues:95:5)
     at runNextTicks (node:internal/process/task_queues:64:3)
     at listOnTimeout (node:internal/timers:533:9)
     at processTimers (node:internal/timers:507:7)



error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

``
`const {deployments, ethers, getNamedAccounts } = require("hardhat")
// const { developmentChains } = require("../../helper-hardhat-config")
const {assert } = require("chai")

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

   deployer = ( await getNamedAccounts()).deployer  
   await deployments.fixture(['all']) // deploys all contracts in deploy folder 
    fundMe = await ethers.getContract("FundMe", deployer)
    mockV3Aggregator = await ethers.getContract("MockV3Aggregator", deployer
          )
})
   

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

[paulcoffee85]

As you can see in Patricks' screen, his preferenced properties includes getContract, whereas Mine are only getContractAt & getContractFactory, But I tried both of those to no avail.

[AmitKochar1]

Have you installed hardhat deploy package?

[paulcoffee85]

Have you installed hardhat deploy package?

I just installed this: npm install --save-dev @nomiclabs/hardhat-ethers@npm:hardhat-deploy-ethers

And now it worked. I'm not sure how, but downgrading to v 5.0.0 , than reinstalling the above npm line from https://github.com/wighawag/hardhat-deploy-ethers#readme
Thanks for your input on that, i may not have installed that again. :)

[AmitKochar1]

Perfect!! I had the same issue and re-installed the hardhat deploy package and it worked.

[paulcoffee85]

Thanks again. I'm just not sure which other npm and yarn deploy helpers i was installing, too many to keep track of.
Now I just have to try and understand how this testing code works and how to write my own.

[AmitKochar1]

That's alright, we all are learning. Sometimes, it gets overwhelming due to a number of things to be installed.

[Karakter99]

First I removed all my hardhat-deploy plugins from my code. To remove you can do it like that:
yarn remove hardhat hardhat-deploy (This will remove hardhat-deploy plugin)
Then I installed => npm install --save-dev @nomiclabs/hardhat-ethers 'ethers@^5.0.0' <= this code over here
After that Installed => npm install --save-dev @nomiclabs/hardhat-ethers@npm:hardhat-deploy-ethers <= this one and mine is working now. thanks for the answer