Impersonate Account

[Sotatek-TruongNguyen2]

I'm working with a piece of code that tries to impersonate an account on mainnet, and it works fine in a normal Hardhat test. However, when I run it with solidity-coverage, it fails with the error ProviderError: Unknown account 0xx.

Here's my Hardhat configuration setup:

hardhat: {
      chainId: 31337,
      live: false,
      tags: ['test', 'local'],
      hardfork: HARDFORK,
      blockGasLimit: BigNumber.from(10).pow(15).toNumber(),
      // gas: DEFAULT_BLOCK_GAS_LIMIT,
      throwOnTransactionFailures: true,
      throwOnCallFailures: true,
      forking: {
        enabled: FORKING_ENABLED,
        url: `https://eth-mainnet.g.alchemy.com/v2/${process.env.ALCHEMY_KEY}`,
        blockNumber: 22016809,
      },
      allowUnlimitedContractSize: true,
      allowBlocksWithSameTimestamp: false,
      gasPrice: 2228078444,
      accounts: [
        {
          privateKey: DEPLOYER_PRIVATE_KEY,
          balance: DEFAULT_ACCOUNT_BALANCE,
        },
        ...Array.from({ length: 10 }, () => {
          const wallet = Wallet.createRandom();
          return {
            privateKey: wallet.privateKey,
            balance: DEFAULT_ACCOUNT_BALANCE,
          };
        }),
      ],

And this's my command for running coverage script: COVERAGE=true npx hardhat coverage. Are there any ways to workaround this one ?

[cgewecke]

@Sotatek-TruongNguyen2

Could you try moving the function you use to generate the accounts out of the hardhat config object - i.e storing that value in a local variable at the top of the file and then referencing it in the config?

It's possible that's not resolving correctly within the plugin logic....

[Sotatek-TruongNguyen2]

hardhat: {
      chainId: 31337,
      live: false,
      tags: ['test', 'local'],
      hardfork: HARDFORK,
      blockGasLimit: BigNumber.from(10).pow(15).toNumber(),
      // gas: DEFAULT_BLOCK_GAS_LIMIT,
      throwOnTransactionFailures: true,
      throwOnCallFailures: true,
      forking: {
        enabled: FORKING_ENABLED,
        url: `https://eth-mainnet.g.alchemy.com/v2/${process.env.ALCHEMY_KEY}`,
        blockNumber: 22016809,
      },
      allowUnlimitedContractSize: true,
      allowBlocksWithSameTimestamp: false,
      gasPrice: 2228078444,
      accounts: hardhatGeneratedAccounts,
    },

I moved the account generation to the top of the file, but the error still persists. One thing to note is that the account I'm trying to impersonate is not on the pre-generated list, which seems really weird.

[cgewecke]

Is there any other provider setup logic you're running? Does a simple test without using impersonate account work correctly?