Lesson 7: Error - Invalid Chai property: revertedWith

[Mark-Four]

I've just reached unit testing the fund function().

On running the test I am receiving the error given above:

"Error: Invalid Chai property: revertedWith"

I've tried the following steps to debug:

1. I've updated chai to version 4.3.6 (Checked in package.json)
2. Checked hardhat.config.js to check if hardhat-waffle is being imported. It is.
3. Checked the chai matchers page for the correct usage of revertedWith. It's correct.
4. Copied and pasted Patrick's code from this repo.

I'm still facing the same error. Please find my FundMe.test.js given below. Any help will be appreciated.

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

describe("FundMe", async function() {
    let fundMe
    let deployer
    let mockV3Aggregator
    beforeEach(async function() {
        //const accounts = await ethers.getSigners()
        //const accountZero = account[0]
        deployer = (await getNamedAccounts()).deployer
        await deployments.fixture(["all"]) // deploy all contracts using deployment.fixture()
        fundMe = await ethers.getContract("FundMe", deployer)
        mockV3Aggregator = await ethers.getContract(
            "MockV3Aggregator",
            deployer
        )
    })

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

    describe("fund", async function() {
        it("Should fail if you don't send enough ETH", async function() {
            await expect(fundMe.fund()).to.be.revertedWith(
                "You need to spend more ETH!"
            )
        })
    })
})

[krakxn]

Did you do this? import { solidity } from "ethereum-waffle"; This tells Chai to use the Solidity plug-in

[krakxn]

It should work in my opinion.

[Mark-Four]

It worked Thank you!!!!!!!

[krakxn]

Awesome!! All the best :)

[salmansarwarr]

In which file should I add this?

[sajidganie]

where to import can anyone tell i am getting the same error

[alymurtazamemon]

@Mark-Four Do you have ethereum-waffle along with @nomiclabs/hardhat-waffle?

[JoaBerra]

Yup worked like a charm!

[JamesEarle]

If you use the @nomicfoundation/hardhat-chai-matchers you can't use waffle as above. You get an error if you try to use both

Error: You are using both @nomiclabs/hardhat-waffle and @nomicfoundation/hardhat-chai-matchers. They don't work correctly together, so please make sure you only use one.
We recommend you migrate to @nomicfoundation/hardhat-chai-matchers. Learn how to do it here: https://hardhat.org/migrate-from-waffle

[0xKarl98]

isn't this already included in hardhat-toolbox ?

[6be709c0]

I confirm, now you only need to use @nomicfoundation/hardhat-toolbox:
import "@nomicfoundation/hardhat-toolbox"
or
require("@nomicfoundation/hardhat-toolbox")

[Vinhnv0901]

should pay attention to the version of ethereum-waffle

[Neharoy2022]

@Mark-Four and @alymurtazamemon Thank you for the necessary discussion and guidance.

[shunbiao]

Try to reinstall the hardhat choosing the latest version -2.0.3
yarn add --dev hardhat

[SamarthBagga]

Hi @Mark-Four @alymurtazamemon I am running into the same error. I have run yarn add ethereum-waffle . But the error still persists, if I require ethereum waffle in the hardhat config i get this error-

Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './lib/utils' is not defined by "exports" in /home/samarth/web3/hardhat-fundme/node_modules/ethers/package.json
    at new NodeError (internal/errors.js:322:7)
    at throwExportsNotFound (internal/modules/esm/resolve.js:332:9)
    at packageExportsResolve (internal/modules/esm/resolve.js:565:3)
    at resolveExports (internal/modules/cjs/loader.js:450:36)
    at Function.Module._findPath (internal/modules/cjs/loader.js:490:31)
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:888:27)
    at Function.Module._load (internal/modules/cjs/loader.js:746:27)
    at Module.require (internal/modules/cjs/loader.js:974:19)
    at require (internal/modules/cjs/helpers.js:101:18)
    at Object.<anonymous> (/home/samarth/web3/hardhat-fundme/node_modules/@ethereum-waffle/provider/src/CallHistory.ts:2:1) {
  code: 'ERR_PACKAGE_PATH_NOT_EXPORTED'
}
error Command failed with exit code 1.

How did you solve this issue could you guide me?

[phanker]

I met an error like yours ,just now I fixed this error.I found the version of "ethereum-waffle" was high for my project and changed it to "ethereum-waffle@^3.0.0"

[haaarshit]

I was getting same error
You should use hardhat-toolbox

Configure these dependencies in hardhat-config.js file

require("@nomicfoundation/hardhat-toolbox")
require("@nomiclabs/hardhat-ethers")
require("hardhat-deploy")
require("solidity-coverage")
require("hardhat-gas-reporter")
require("hardhat-contract-sizer")
require("dotenv").config()

Run following command to install all dependencies

1->

yarn add --dev  @nomicfoundation/hardhat-toolbox

2->

yarn add --dev "@nomicfoundation/hardhat-network-helpers@^1.0.0" "@nomicfoundation/hardhat-verify@^1.0.0" "@types/mocha@>=9.1.0" "@typechain/ethers-v6@^0.4.0" "@typechain/hardhat@^8.0.0" "ethers@^6.4.0" "ts-node@>=8.0.0" "typescript@>=4.5.0"

[zatarx]

I met an error like yours ,just now I fixed this error.I found the version of "ethereum-waffle" was high for my project and changed it to "ethereum-waffle@^3.0.0"

This change won't let you use .emit() that's only available in version 4.
https://ethereum-waffle.readthedocs.io/en/latest/matchers.html#emitting-events