问随时间而变化的白帽测试？

EN

npm install @nomicfoundation/hardhat-network-helpers

import { time } from "@nomicfoundation/hardhat-network-helpers";

async function main() {
  // advance time by one hour and mine a new block
  await helpers.time.increase(3600);

  // mine a new block with timestamp `newTimestamp`
  await helpers.time.increaseTo(newTimestamp);

  // set the timestamp of the next block but don't mine a new block
  await helpers.time.setNextBlockTimestamp(newTimestamp);
}

main();

// suppose the current block has a timestamp of 01:00 PM
await network.provider.send("evm_increaseTime", [3600])
await network.provider.send("evm_mine") // this one will have 02:00 PM as its timestamp

await network.provider.send("evm_setNextBlockTimestamp", [1625097600])
await network.provider.send("evm_mine") // this one will have 2021-07-01 12:00 AM as its timestamp, no matter what the previous block has

await ethers.provider.send("evm_mine", [newTimestampInSeconds]);

const { expect } = require("chai");
const { ethers } = require('hardhat');

const sevenDays = 7 * 24 * 60 * 60;

const blockNumBefore = await ethers.provider.getBlockNumber();
const blockBefore = await ethers.provider.getBlock(blockNumBefore);
const timestampBefore = blockBefore.timestamp;

await ethers.provider.send('evm_increaseTime', [sevenDays]);
await ethers.provider.send('evm_mine');

const blockNumAfter = await ethers.provider.getBlockNumber();
const blockAfter = await ethers.provider.getBlock(blockNumAfter);
const timestampAfter = blockAfter.timestamp;

expect(blockNumAfter).to.be.equal(blockNumBefore + 1);
expect(timestampAfter).to.be.equal(timestampBefore + sevenDays);