{upkeepNeeded} = undefined after preforming checkUpKeep static call

[Ahmedborwin]

Hope you are well

The const { upkeepNeeded } = await raffleContract.callStatic.checkUpkeep("0x") s resulting in an undefined upkeepNeeded const no matter what I do. 

At this point, I have copy/pasted both the checkUpkeep and the test function but my const returned or upkeepNeeded is still undefined...

Bearing in mind other tests that interact with the contract as working fine, it's only when I try to call the checkupKeep function (for now)

Any suggestions on what I am doing? Thank you in advance

// UpKeep function on my Contract
    function checkUpkeep(
        bytes memory /* checkData */
    ) public view override returns (bool upkeepNeeded, bytes memory /* performData */) {
        bool isOpen = RaffleState.OPEN == s_raffleState;
        bool timePassed = ((block.timestamp - s_lastTimeStamp) > i_interval);
        bool hasPlayers = s_players.length > 0;
        bool hasBalance = address(this).balance > 0;
        upkeepNeeded = (timePassed && isOpen && hasBalance && hasPlayers);
        return (upkeepNeeded, "0x0"); // can we comment this out?

// Test for upkeep function
          describe("checkupkeep tests", async () => {
              it("returns false if enough time hasn't passed", async () => {
                  await raffleContract.enterRaffle({ value: raffleEntranceFee })
                  await network.provider.send("evm_increaseTime", [interval.toNumber() - 5]) // use a higher number here if this test fails
                  await network.provider.request({ method: "evm_mine", params: [] })
                  const { upkeepNeeded } = await raffleContract.callStatic.checkUpkeep("0x") // upkeepNeeded = (timePassed && isOpen && hasBalance && hasPlayers)
                  assert.equal(upkeepNeeded == false)
              })
          })
    }

[PatrickAlphaC]

Hmmm perhaps your contract isn't being deployed correctly. Could you clone this repo and see if you're still getting the error?

[Ahmedborwin]

Hi Patrick,

It's strange because the {upkeepNeeded} is set to true when the checkUpkeep tests all pass. If they fail though rather than setting upkeepNeeded = false, it's undefined. When i realised i could pass the tests by using !upkeepNeeded I ended up moving on with the course. Thank you for responding Patrick