lesson 7 Error: No deployment found for: MockV3Aggregator

[SiegfriedBz]

Hi all,
Could someone help me ?

the link to my repo
https://github.com/SiegfriedBz/hardhat_fundme_fcc

I get this error when I run yarn hardhat test

[krakxn]

@SiegfriedBz

This is due to a typo in the naming of the contract inside contracts folder. Inside it, in the test folder, it should be MockV3Aggregator instead; the current one is incorrect.

Do not forget to clean cache and artifacts:

• yarn hardhat clean
• yarn hardhat compile
• Deploy contracts via the scripts.
• Finally, you can test now--it should work as intended.

[krakxn]

yarn hardhat deploy

[SiegfriedBz]

Thank you, this works

but still prb with test

[pacelliv]

@SiegfriedBz the command await deployments.fixture(["all"]) keep track of all the scripts that contain the tag "all", this is how your test is able to get the last deployments of FundMe and MockV3Aggregator and store them in the fundMe and mockV3Aggregator variables, respectively.

[SiegfriedBz]

Thanks a lot @pacelliv !! is much clearer to me now :)
just one doubt, does await deployments.fixture(["all"]) "keeps track" or allows to access all deployments that are 'marked' with a tag all ?

[pacelliv]

@SiegfriedBz this answer should give you a bit more information about how the command works: wighawag/hardhat-deploy#289 (comment). But basically it picks up any deployment with an specific tag, in this case all, this is how I see it.

[JamesMckenna]

in hardhat_helper_config.js change

  80001: {
    // chainId
    name: "polygon mumbai",
    ethUsdPriceFeedAddress: "0x0715A7794a1dc8e42615F059dD6e406A6594651A",
  },

to

  80001: {
    // chainId
    name: "polygonMumbai",
    ethUsdPriceFeedAddress: "0x0715A7794a1dc8e42615F059dD6e406A6594651A",
  },

const developmentChains = ["hardhat", "localhost", "polygonMumbai"] //<-- edit for clarification. 

Then to the hardhat.config.js add

  networks: {
    goerli: {
      chainId: 5,
      url: GOERLI_RPC_URL,
      accounts: [PRIV_KEY],
      blockConfirmations: 6,
    },
   polygonMumbai: {              //<----- developmentChains.includes(network.name)
         chainId: 80001
    },
    localhost: {
      chainId: 31337,
      url: "http://127.0.0.1:8545/",
    },
  },

[SiegfriedBz]

I tried, and added an endpoint with Alchemy on mumbai

it gives the same error

But yarn hardhat test spins up the local test network isn t it ? so it should not use goerli or mumbai, just localhost isn t it ?

[SiegfriedBz]

this can not work without a url for mumbai

[JamesMckenna]

yarn hardhat test spins up the local test network

Correct

yarn hardhat test --network polygonMumbai

should run the test against a deployed contract on a testnet
and yes, you will probably need url and accounts as in you screenshot

[JamesMckenna]

and if running on a test net, and not local, I was worng in saying

const developmentChains = ["hardhat", "localhost", "polygonMumbai"] <--- wrong, please excuse me

const developmentChains = ["hardhat", "localhost"] <-- was correct

[SiegfriedBz]

no prb @JamesMckenna, thank you for trying to help

[RoboCrypter]

@SiegfriedBz : I have made a PR in your repo, Merge it, and try it out!

After Merging, Your tests will run just fine!

Let me know, If it resolves your issue!

[pacelliv]

@abossofmyself it worked! I've been reading that repo for over an hour and I cannot believe I missed that! OMG.

[SiegfriedBz]

@abossofmyself thank you so much !!!
it was messing the export and I guess was hence not "trackable" by await deployments.fixture(["all"])