Lesson-7 (11.17.59): I was trying to test fundme contract and getting error, can anyone help me? Thank you.

[rahulpandey70]

This is the error message i'm getting.

 FundMe
    constructor
      1) Sets the aggregator Address


  0 passing (1s)
  1 failing

  1) FundMe
       constructor
         Sets the aggregator Address:
     Error: could not decode result data (value="0x", info={ "method": "priceFeed", "signature": "priceFeed()" }, code=BAD_DATA, version=6.5.1)

This is my unit test code

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

describe("FundMe", () => {
    let fundMe
    let mockV3Aggregator
    beforeEach(async () => {
        const { deployer } = await getNamedAccounts()
        await deployments.fixture(["all"])
        fundMe = await ethers.getContractAt("FundMe", deployer)
        mockV3Aggregator = await ethers.getContractAt(
            "MockV3Aggregator",
            deployer
        )
    })

    describe("constructor", () => {
        it("Sets the aggregator Address", async () => {
            const response = await fundMe.priceFeed()
            assert.equal(response, await mockV3Aggregator.address)
        })
    })
})

[alfaqi]

delete await from assert.equal(response, await mockV3Aggregator.address)
just assert.equal(response, mockV3Aggregator.address)

and why you are using getContractAt() instead of getContract()

[rahulpandey70]

Still not working friend getting same error TypeError: ethers.getContract is not a function

[alfaqi]

Please share your repo

[rahulpandey70]

Ok sure,
Repo Link :- https://github.com/rahulpandey70/Hardhat-fund-me

[alfaqi]

it was about libraries.
I replaced your package.json with this

{
  "dependencies": {
    "@nomicfoundation/hardhat-toolbox": "^2.0.2",
    "@nomiclabs/hardhat-ethers": "npm:hardhat-deploy-ethers@^0.3.0-beta.13",
    "dotenv": "^16.0.3",
    "hardhat": "^2.14.0",
    "solhint": "^3.4.1"
  },
  "devDependencies": {
    "@chainlink/contracts": "^0.6.1",
    "@nomiclabs/hardhat-solhint": "^3.0.1",
    "hardhat-deploy": "^0.11.29",
    "solidity-coverage": "^0.8.2"
  }
}

and it works fine
you may need to install the package by npm i --force

[rahulpandey70]

Thanks friend, it worked.