Hardhat – Fixing VM Exception Reverted with Reason String ‘Didn’t send enough!’ in Testing Contract

Getting this error while testing one of functions functionality in the contract

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!'

I have used waffles chai-matchers.
This is my test.js

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

describe("FundMe", function () {
    let fundMe
    let deployer
    let mockV3Aggregator
    beforeEach(async function () {
        deployer = (await getNamedAccounts()).deployer
        await deployments.fixture(["all"]) 
        fundMe = await ethers.getContract("FundMe", deployer) 
    describe("fund", 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!!"
            )
        })
    })
})

this is my FundMe.sol contract's fund function

function fund() public payable {
        require(
            msg.value.getConversionRate(priceFeed) >= MINIMUM_USD,
            "Didn't send enough!"
        );
    }