Lesson14: Can I use the following code instead of Promise?

[f-hk]

i write some code here for "fulfillRandomWords" Test, but i don't use "New Promise" function like in the video, is it OK?

describe("fulfillRandomWords", async () => {
              beforeEach(async () => {
                  const txResponse = await randomIpfsNft.requestNft({
                      value: sendValue,
                  })
                  const txReceipt = await txResponse.wait(1)
                  const requestId = txReceipt.events[1].args.requestId
                  await vrfCoodinatorV2Mock.fulfillRandomWords(
                      requestId,
                      randomIpfsNft.address
                  )
              })

              it("mints NFT after random number is returned", async () => {
                  randomIpfsNft.once("NftMinted", async () => {
                      const tokenUri = await randomIpfsNft.tokenURI(0)
                      const tokenCounter = await randomIpfsNft.getTokenCounter()
                      assert.equal(
                          tokenUri.toString().includes("ipfs://"),
                          true
                      )
                      assert.equal(tokenCounter.toString(), "1")
                  })
              })
          })

also my test is passed

I'm afraid it's a coincidence...
Thank you for helping me answer

[othaime-en]

Hey @f-hk you could totally use the code as it is above. We use the promise just to be safe incase the blockchain moves fast or slow i.e. the events gets emitted faster before we can "catch" it/ listen for it. But this is totally workable.

[f-hk]

ok i got it, Thanks!