Lesson 7: AssertionError: Expected transaction to be reverted with You need to spend more ETH

[LucidJoy]

Hello community👋,

I have come across an error and I'm not sure how to debug it as my and Patrick's code is same.
Timestamp: 11:20:40

The error says:
AssertionError: Expected transaction to be reverted with You need to spend more ETH, but other exception was thrown: Error: VM Exception while processing transaction: reverted with reason string 'Didn't send enough.'

My FundMe.test.js file:

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

describe('FundMe', async function () {
  let fundMe;
  let mockV3Aggregator;

  beforeEach(async function () {
    // deploy our FundMe contract using Hardhat-deploy
    const { deployer } = await getNamedAccounts();
    await deployments.fixture(['all']);
    fundMe = await ethers.getContract('FundMe', deployer);
    mockV3Aggregator = await ethers.getContract('MockV3Aggregator', deployer);
  });

  describe('constructor', async () => {
    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 don't send enough ETH", async function () {
      await expect(fundMe.fund()).to.be.revertedWith(
        'You need to spend more ETH'
      );
    });
  });
});

The screenshot of Error:

[mattjaf]

your error message in your contract might be different then what was expected

In other words:

most likely the error message in your contract isDidn't send enough

while in your test you have revertedWth:

You need to spend more ETH

[LucidJoy]

Oh, I didn't know the messages should be exactly the same

It worked, thanks mate!

[Kizito007]

Thanks!
I also didn't know.. Y'all are awesome

[ManuWeb3]

Even I did not know that. Just learned today :)