Undeclared identifier

[ghost]

[RoboCrypter]

@DANIA001 : This error is coming due to the incorrect License,

The license on top of your solidity file should be like this : // SPDX-License-Identifier: MIT

It will resolve this issue!

[ghost]

hey @abossofmyself thanks this issue is resolved

can you please answer this also

here is my randomIpfsNft.test.js

const {developmentChains, networkConfig} = require("../../helper-hardhat-config")
const {getNamedAccounts, deployments, ethers} = require("hardhat")
const {assert, expect} = require("chai")

!developmentChains.includes(network.name)?describe.skip:describe("randomIpfs NFT test", function(){
let randomIpfsNft, deployer, vrfCoordinatorV2Mock
const chainId = network.config.chainId

beforeEach(async function(){
accounts = await ethers.getSigners()
deployer = accounts[0]
await deployments.fixture(["mocks", "randomIpfs"])
randomIpfsNft = await ethers.getContract("RandomIpfsNft")
vrfCoordinatorV2Mock = await ethers.getContract("VRFCoordinatorV2Mock")
})
describe("constructor",() =>{
it("sets the initial value correctly", async function(){
const dogTokenUriZero = await randomIpfsNft.getDogTokenUri(0)
const isInitialized = await randomIpfsNft.getInitialized()
assert(dogTokenUriZero.includes("ipfs://"))
assert.equal(isInitialized, true)
})
})
describe("requestNft",()=> {
it("fails if payment is not enough", async () =>{
await expect(randomIpfsNft.requestNft()).to.be.revertedWith("RandomIpfsNft__NeedMoreEth")
})
it("should revert an error if payment amount is less than mint fee", async () =>{
const fee = await randomIpfsNft.getMintFee()
await expect(randomIpfsNft.requestNft({
value:fee.sub(ethers.utils.parseEther("0.001")),}).to.be.revertedWith("RandomIpfsNft__NeedMoreEth"))
})
it("emits an nftRequested events",async () =>{
const fee = await randomIpfsNft.getMintFee()
await expect(randomIpfsNft.requestNft({value:fee.toString()})).to.emit(randomIpfsNft,"NftRequested")
})
})
describe("fulfillRandomWords", async () =>{
})

describe("getBreedFromModdedRng", async () =>{
it("should return pug if the moddedRng is less than 10", async () =>{
const expectedValue = await randomIpfsNft.getBreedFromModdedRng(7)
assert.equal(0, expectedValue)
})
it("should return shiba-INU if the moddedRng value is more than 10 but less than 40", async () =>{
const expectedValue = await randomIpfsNft. getBreedFromModdedRng(21)
assert.equal(1, expectedValue)
})
it("should return st.bernard if moddedRng value is more than 40 but less than 100", async () =>{
const expectedValue = await randomIpfsNft.getBreedFromModdedRng(77)
assert.equal(2, expectedValue)
})
it("should revert back an error if moddedRng value exceed 100", async () =>{
await expect(randomIpfsNft.getBreedFromModdedRng(100)).to.be.revertedWith("RandomIpfsNft__RangeOutOfBounds")
})
})

})

firstly, i do not know where i am going wrong but half of these tests are not working
secondly, i cannot figure out how to write "fulfillRandomWords" tests and i am unable to understand patrick's solution
thirdly, why are we putting these numbers
const expectedValue = await randomIpfsNft.getBreedFromModdedRng(7)
const expectedValue = await randomIpfsNft. getBreedFromModdedRng(21)
const expectedValue = await randomIpfsNft. getBreedFromModdedRng(77)
how are we getting these??? can you please explain...this is from lesson 14, i asked this around 10 days back but i did not get the answer, can you please help

[luloxi]

1. What's the error on each one that's not working?
2. For fulfillRandomWords, you have to use a JavaScript Promise to listen for an event that is fulfilled when the fulfillRandomWords is called by the Mock after requesting for an NFT.
3. This three are for testing you get the right "random" NFT when you input that number.

const expectedValue = await randomIpfsNft.getBreedFromModdedRng(7)
const expectedValue = await randomIpfsNft. getBreedFromModdedRng(21)
const expectedValue = await randomIpfsNft. getBreedFromModdedRng(77)

In your function fulfillRandomWords, when you do uint256 moddedRng = randomWords[0] % MAX_CHANCE_VALUE;, you're getting a number between 0 and 99, because using Modulo with 100 (MAX_CHANCE_VALUE) on a big number will cut out every number that's a multiple of 100.

[RoboCrypter]

@DANIA001 : Send your repo link! , I will try to fix your test!