Lesson 7 : Error: No Contract deployed with name FundMe

[himanshukrabc]

I am getting the following error when I run the unit test

yarn run v1.22.19
       $ D:\BlockChain\HardhatFundMe\node_modules\.bin\hardhat test
       FundMe
         constructor

           1) "before each" hook for "Sets the aggregator address correctly"
       0 passing (1s)
       1 failing
       1) FundMe
            "before each" hook for "Sets the aggregator address correctly":
          Error: No Contract deployed with name FundMe
           at Object.getContract (node_modules\@nomiclabs\hardhat-ethers\src\internal\helpers.ts:447:11)
           at processTicksAndRejections (node:internal/process/task_queues:95:5)
           at Context.<anonymous> (test\unit\FundMe.test.js:20:18)

I have pushed my code to the following repo : https://github.com/Himanshukrabc/HardhatFundMe

Here is my 00-deploy-mocks.js script

  const { network } = require("hardhat");
  const { developmentChains, DECIMALS, INITIAL_ANSWER } = require("../helper-hardhat-config");
  
  module.exports.default = async ({ getNamedAccounts, deployments }) => {
      const { deploy, log } = deployments;
      const { deployer } = await getNamedAccounts();
      if(developmentChains.includes(network.name)){
          log("Local network detected, deploying mocks...");
          await deploy("MockV3Aggregator",{
              contract:"MockV3Aggregator",
              from:deployer,
              log:true,
              args:[DECIMALS, INITIAL_ANSWER]//check from implementation
          });
          log("Mock scripts deployed.");
          log("-------------------------------------------------------------------");
      }
  }
  module.exports.tags = ["all","mocks"];

my 01-deploy-fund-me.js script

  const { network } = require("hardhat");
  const { networkConfig, developmentChains } = require("../helper-hardhat-config");
  const { verify } = require("../utils/verify");
  
  module.exports.default = async ({ getNamedAccounts, deployments }) => {
      const { deploy, log } = deployments;
      const { deployer } = await getNamedAccounts();
      // namedAccounts ==> see hardhat.config
      const chainId = network.config.chainId;
      let priceFeedAddress;
      if (developmentChains.includes(network.name)) {
          const ethUsdAggregator = await deployments.get("MockV3Aggregator");
          priceFeedAddress = ethUsdAggregator.address;
      }
      else priceFeedAddress = networkConfig[chainId]["ethUsdPriceFeed"];
  
      const fundme = await deploy("FundMe", {
          from: deployer,
          args: [priceFeedAddress],
          log: true,
          waitConfirmations: network.config.blockConfirmations || 1
      })
      log("--------------------------------------------------------------------");
  
      if (!developmentChains.includes(network.name) && process.env.API_KEY) {
          await verify(fundme.address, [priceFeedAddress]);
      }
  }
  
  module.exports.tags = ["all","fundme"];

and finally the unit test script

    const { deployments, ethers, getNamedAccounts } = require('hardhat');
    const { assert } = require('chai');
    
    describe("FundMe", function () {
        let fundme, MockV3Aggregator;
        let deployer;
        beforeEach(async function () {
            deployer = (await getNamedAccounts()).deployer;
    
            await deployments.fixture(["all"]);
            fundme = await ethers.getContract("FundMe",deployer);
            MockV3Aggregator = await ethers.getContract("MockV3Aggregator",deployer);
        })
    
        describe("constructor", function () {
            it("Sets the aggregator address correctly", async function () {
                // All variables become getter functions with same name
                const response = await fundme.priceFeed();
                assert.equal(response, MockV3Aggregator.address);
            })
        })
    })

I have read most of the discussions on similar issues but I cannot find the bug here. Any help wil be greatly appreciated.

[olaoyesalem]

check and correct the name of the contract in your solidity file to be the same as the name of the file that conatins your contract.

FundMe.sol (file) should be the same as
contract FundMe{
......
.....
.....
.....
}

[himanshukrabc]

It is the same. FundMe contract is named FundMe.sol

[himanshukrabc]

The issue got resolved. When exporting I was using module.exports.default instead of module.exports in the deploy scripts.

[olaoyesalem]

Okay. That's alright buddy.

[Night-Prime]

The issue got resolved. When exporting I was using module.exports.default instead of module.exports in the deploy scripts.

Where is this line of code located? is it at the module.exports.tags = ["all", "fundme] ??

[olaoyesalem]

It is located at the end of the file.
Here
module.exports.tags = ["all", "fundme]

[popsean]

I have the same issue too because i forget to

module.exports.tags = ["all", "fundme"]

at end of 01-deploy-fund-me.js

[Taha-Zerarkaa]

change this >>

fundme = await ethers.getContract("FundMe",deployer);
MockV3Aggregator = await ethers.getContract("MockV3Aggregator",deployer);

to this >>

fundme = await ethers.getContractFactory("FundMe",deployer);
MockV3Aggregator = await ethers.getContractFactory("MockV3Aggregator",deployer);