Separate Hardhat task to run tests on mainnet fork

test-fork.ts

import {task, types} from "hardhat/config";

task("test-fork", "Runs mocha tests on a fork of mainnet").addOptionalParam(
    "url",
    "The URL of the Mainnet archive node",
    "",
    types.string
  ).setAction(async (taskArgs, hre) => {
    hre.config.networks.hardhat.forking = {
        url: taskArgs.url,
        blockNumber: 13825000, 
        enabled: true
    };
    await hre.run("test");
});