Lesson:7: Error wile testing fund() function at 11:21

[ritesh798]

getting this error when i used expect from chai

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

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

  beforeEach(async function () {
    const deployer = (await getNamedAccounts()).deployer;
    await deployments.fixture(["all"]);
    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);
    });
  });
  describe("fund", async function () {
    it("fails if you dont send enough ETH", async function () {
      await expect(fundMe.fund()).to.be.revertedWith(
        "You need to spend more ETH"
      );
    });
  });
});

[krakxn]

Try revertedWithCustomError instead of revertedWith. This should fix your issue. Let me know!

[ritesh798]

it is throwing this error now after using revertedWithCustomError

FundMe
    constructor
31337
      ✔ sets the aggregator address correctly
    fund
      1) fails if you dont send enough ETH


  1 passing (1s)
  1 failing

  1) FundMe
       fund
         fails if you dont send enough ETH:
     TypeError: The first argument of .revertedWithCustomError must be the contract that defines the custom error
      at Proxy.<anonymous> (node_modules/@nomicfoundation/hardhat-chai-matchers/src/internal/reverted/revertedWithCustomError.ts:23:15)
      at Proxy.methodWrapper (node_modules/chai/lib/chai/utils/addMethod.js:57:25)
      at doAsserterAsyncAndAddThen (node_modules/chai-as-promised/lib/chai-as-promised.js:289:22)
      at Proxy.<anonymous> (node_modules/chai-as-promised/lib/chai-as-promised.js:255:20)
      at Proxy.overwritingMethodWrapper (node_modules/chai/lib/chai/utils/overwriteMethod.js:78:33)
      at Context.<anonymous> (test/unit/FundMe.test.js:23:41)



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

[Sunil-Reddy-Gummalla]

Please Check in your contract the fund() is reverting with same message you Provided in the Test Case or not

[krakxn]

Show your code after editing it to custom error

[ritesh798]

ok, so it was my mistake the message was not identical in contract. I thought it will override
Thanks for the help

[alymurtazamemon]

@ritesh798

"You need to spend more ETH"

Your this message is different in the smart contract check that and make sure it is similar.

[alymurtazamemon]

@ritesh798 Your contract has a message Didnt send enough ETH

And the more important thing, Please follow this guide next time when you ask a question. How to Ask Question Guide

[ritesh798]

thanks for help