parthsarthimishra
commented
1 year ago Here is the test code , It uses ethers v6 and is completely working as on date .
const { network, deployments, ethers } = require("hardhat")
const { developmentChains } = require("../../helper-hardhat-config")
const { mock } = require("node:test")
!developmentChains.includes(network.name)
? describe.skip
: describe("FundMe", function () {
let fundMe
let mockV3Aggregator
let deployer
const sendValue = ethers.parseEther("1")
beforeEach(async () => {
// const accounts = await ethers.getSigners()
// deployer = accounts[0]
deployer = (await getNamedAccounts()).deployer
console.log(`deployer is : ${deployer}`)
await deployments.fixture(["all"])
const myContract = await deployments.get("FundMe");
//console.log(myContract)
//console.log(`myContract.adress : ${myContract.address}`)
//console.log(`deployer : ${deplo}`)
fundMe = await ethers.getContractAt(
myContract.abi,
myContract.address,
);
//console.log(fundMe)
//fundMe = await ethers.getContractAt("FundMe", deployer)\
const mymockV3Aggregator = await deployments.get("MockV3Aggregator");
mockV3Aggregator = await ethers.getContractAt(
mymockV3Aggregator.abi,
mymockV3Aggregator.address
)
//console.log(mockV3Aggregator)
//console.log(fundMe.target)
})
describe("constructor", function () {
it("sets the aggregator addresses correctly", async () => {
//console.log(`agar yaha kuch print hua matlab soni bhadwa hai`)
const response = await fundMe.getPriceFeed()
//console.log(`respponsrejunb : ${response}`)
//console.log(mockV3Aggregator)
assert.equal(response, mockV3Aggregator.target)
})
})
describe("fund", function () {
// https://ethereum-waffle.readthedocs.io/en/latest/matchers.html
// could also do assert.fail
it("Fails if you don't send enough ETH", async () => {
await expect(fundMe.fund()).to.be.revertedWith(
"You need to spend more ETH!"
)
})
// we could be even more precise here by making sure exactly $50 works
// but this is good enough for now
it("Updates the amount funded data structure", async () => {
await fundMe.fund({ value: sendValue })
const response = await fundMe.getAddressToAmountFunded(
deployer
)
assert.equal(response.toString(), sendValue.toString())
})
it("Adds funder to array of funders", async () => {
await fundMe.fund({ value: sendValue })
const response = await fundMe.getFunder(0)
assert.equal(response, deployer)
})
})
describe("withdraw", function () {
beforeEach(async () => {
await fundMe.fund({ value: sendValue })
})
it("withdraws ETH from a single funder", async () => {
// Arrange
const startingFundMeBalance =
await ethers.provider.getBalance(fundMe.target)
const startingDeployerBalance =
await ethers.provider.getBalance(deployer)
// Act
const transactionResponse = await fundMe.withdraw()
const transactionReceipt = await transactionResponse.wait()
//console.log(transactionReceipt)
const { gasUsed, gasPrice } = transactionReceipt
console.log(`gasUsed : ${gasUsed} , effectiveGasPrice : ${gasPrice}`)
// gasUsed = BigNumber.from(gasUsed)
// gasPrice = BigNumber.from(gasPrice)
// console.log(`is gasUsed big number : ${ethers.BigNumber.isBigNumber(gasUsed)}`)
const gasCost = gasUsed * gasPrice
const endingFundMeBalance = await ethers.provider.getBalance(
fundMe.target
)
const endingDeployerBalance =
await ethers.provider.getBalance(deployer)
// Assert
// Maybe clean up to understand the testing
assert.equal(endingFundMeBalance, 0)
assert.equal(
(startingFundMeBalance + startingDeployerBalance).toString()
,
(endingDeployerBalance + gasCost).toString()
)
})
// this test is overloaded. Ideally we'd split it into multiple tests
// but for simplicity we left it as one
it("is allows us to withdraw with multiple funders", async () => {
// Arrange
const accounts = await ethers.getSigners()
for (i = 1; i < 6; i++) {
const fundMeConnectedContract = await fundMe.connect(
accounts[i]
)
await fundMeConnectedContract.fund({ value: sendValue })
}
const startingFundMeBalance =
await ethers.provider.getBalance(fundMe.target)
const startingDeployerBalance =
await ethers.provider.getBalance(deployer)
// Act
const transactionResponse = await fundMe.withdraw()
const transactionReceipt = await transactionResponse.wait()
//console.log(transactionReceipt)
const { gasUsed, gasPrice } = transactionReceipt
console.log(`gasUsed : ${gasUsed} , effectiveGasPrice : ${gasPrice}`)
// gasUsed = BigNumber.from(gasUsed)
// gasPrice = BigNumber.from(gasPrice)
// console.log(`is gasUsed big number : ${ethers.BigNumber.isBigNumber(gasUsed)}`)
const withdrawGasCost = gasUsed * gasPrice
const endingFundMeBalance = await ethers.provider.getBalance(
fundMe.target
)
const endingDeployerBalance =
await ethers.provider.getBalance(deployer)
// Assert
assert.equal(
(startingFundMeBalance + startingDeployerBalance).toString(),
(endingDeployerBalance + withdrawGasCost).toString()
)
// Make a getter for storage variables
await expect(fundMe.getFunder(0)).to.be.reverted
for (i = 1; i < 6; i++) {
assert.equal(
await fundMe.getAddressToAmountFunded(
accounts[i].address
),
0
)
}
})
it("Only allows the owner to withdraw", async function () {
const accounts = await ethers.getSigners()
//console.log(accounts[0]);
//console.log(accounts[1]);
const fundMeConnectedContract = await fundMe.connect(
accounts[1]
)
//console.log(await fundMeConnectedContract.withdraw())
await expect(
fundMeConnectedContract.withdraw()
).to.be.revertedWithCustomError(fundMeConnectedContract, "FundMe__NotOwner")
})
})
})
Writing this issue to give solution to all those who want to use ethers V6 instead of downgrading their ethers version as most of the comments out there are pointing out.