Lesson 9- Error in running unit test

[narendra-sajwani]

While running unit test for constructor, following error is coming:
Error: invalid signer or provider
Code for the same is below:

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

!developmentChains.includes(network.name)
    ? describe.skip
    : describe("Raffle Unit Tests", async function () {
          let raffle, vrfCoordinatorV2Mock
          const chainId = network.config.chainId

          beforeEach(async function () {
              const deployer = await getNamedAccounts()
              await deployments.fixture(["all"])
              raffle = await ethers.getContract("Raffle", deployer)
              vrfCoordinatorV2Mock = await ethers.getContract("VRFCoordinatorV2Mock", deployer)
          })

          describe("constructor", async function () {
              it("Initializes the raffle correctly", async function () {
                  // Ideally, we make our tests have only 1 assert per "it"
                  const raffleState = await raffle.getRaffleState()
                  const interval = await raffle.getInterval()
                  assert.equal(raffleState.toString(), "0")
                  assert.equal(interval.toString(), networkConfig[chainId][interval])
              })
          })
      })

Can someone help on this?

Edit: Figured out where I made mistake, the working code is below:

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

!developmentChains.includes(network.name)
    ? describe.skip
    : describe("Raffle Unit Tests", async function () {
          let raffle, vrfCoordinatorV2Mock
          const chainId = network.config.chainId

          beforeEach(async function () {
              const { deployer } = await getNamedAccounts()
              await deployments.fixture(["all"])
              raffle = await ethers.getContract("Raffle", deployer)
              vrfCoordinatorV2Mock = await ethers.getContract("VRFCoordinatorV2Mock", deployer)
          })

          describe("constructor", async function () {
              it("Initializes the raffle correctly", async function () {
                  // Ideally, we make our tests have only 1 assert per "it"
                  const raffleState = await raffle.getRaffleState()
                  const interval = await raffle.getInterval()
                  assert.equal(raffleState.toString(), "0")
                  assert.equal(interval.toString(), networkConfig[chainId]["interval"])
              })
          })
      })

Thanks!

[othaime-en]

enclose deployer in curly braces {}
Rewrite the line const deployer = await getNamedAccounts() as const {deployer} = await getNamedAccounts() because you are extracting deployer which is an object from getNamedAccounts

[othaime-en]

You could also write the line as const deployer = (await getNamedAccounts()).deployer
I prefer this.

[narendra-sajwani]

Thanks