Lesson 14: AssertionError: expected '0' to equal '1'

[Tosinkoa]

@PatrickAlphaC advice us to write our own test for BasicNft and RandomIpfsNft lesson. When I wrote a test for token counter, it was failing. But when I copied @PatrickAlphaC code for the token counter aspect, it keeps failing with an error that says, AssertionError: expected '0' to equal '1' Should the token counter should actually be zero, I mean should I compare the token counter with "0"?

Here is the code for both lessons.

 describe("fulfillRandomWords", () => {
        it("mints NFT after random number is returned", async function () {
          await new Promise(async (resolve, reject) => {
            randomIpfsNft.once("NftMinted", async () => {
              try {
                const tokenUri = await randomIpfsNft.tokenURI("0");
                const tokenCounter = await randomIpfsNft.getTokenCounter();
                assert.equal(tokenUri.toString().includes("ipfs://"), true);
                assert.equal(tokenCounter.toString(), "1");
                resolve();
              } catch (e) {
                console.log(e);
                reject(e);
              }
            });
            try {
              const fee = await randomIpfsNft.getMintFee();
              const requestNftResponse = await randomIpfsNft.requestNft({
                value: fee.toString(),
              });
              const requestNftReceipt = await requestNftResponse.wait(1);
              await vrfCoordinatorV2Mock.fulfillRandomWords(
                requestNftReceipt.events[1].args.requestId,
                randomIpfsNft.address
              );
            } catch (e) {
              console.log(e);
              reject(e);
            }
          });
        });
      });

------------------------------And this---------------------------

  it("Allows users to mint an NFT, and updates appropriately", async function () {
        const txResponse = await basicNft.mintNft();
        await txResponse.wait(1);
        const tokenURI = await basicNft.tokenURI(0);
        const tokenCounter = await basicNft.getTokenCounter();

        assert.equal(tokenCounter.toString(), "1");
        assert.equal(tokenURI, await basicNft.TOKEN_URI());
      });

[alymurtazamemon]

@PatrickAlphaC

[PatrickAlphaC]

No, it should be one. Try copy-pasting my solution.

[MuhammadLuqman-99]

i already try copy but also got same errror.anyone have solution?

[MuhammadLuqman-99]

it fixed after i change at contract s_tokenCounter += s_tokenCounter; to s_tokenCounter = s_tokenCounter + 1;

[benjbright]

Thank you Muhammad this worked for me as well