Logging block timestamps

testotron.ts

import { BigNumber } from "@ethersproject/bignumber";
import { Signer } from "@ethersproject/abstract-signer";
import { waffle } from "@nomiclabs/buidler";
import { expect } from "chai";

export function shouldBehaveLikeGreeter(_signers: Signer[]): void {
  describe("1st Block", function () {
    beforeEach(async function () {
      await waffle.provider.send("evm_setNextBlockTimestamp", [1597348800]);
      const blockTimestamp: BigNumber = await this.testotron.getBlockTimestamp();
      console.log({ "1stTimestamp": blockTimestamp.toString() });
    });

    it("should pass the 1st test", async function () {
      expect(await this.greeter.greet()).to.equal("Hello, world!");

      await this.greeter.setGreeting("Hola, mundo!");
      expect(await this.greeter.greet()).to.equal("Hola, mundo!");
    });
  });

  describe("2nd Block", function () {
    it("pass the 2nd test", async function () {
      expect(await this.greeter.greet()).to.equal("Hello, world!");

      await this.greeter.setGreeting("Hola, mundo!");
      expect(await this.greeter.greet()).to.equal("Hola, mundo!");
    });

    beforeEach(async function () {
      const blockTimestamp: BigNumber = await this.testotron.getBlockTimestamp();
      console.log({ "2ndTimestamp": blockTimestamp.toString() });
    });
  });

  describe("3rd Block", function () {
    it("pass the 2nd test", async function () {
      expect(await this.greeter.greet()).to.equal("Hello, world!");

      await this.greeter.setGreeting("Hola, mundo!");
      expect(await this.greeter.greet()).to.equal("Hola, mundo!");
    });

    beforeEach(async function () {
      const blockTimestamp: BigNumber = await this.testotron.getBlockTimestamp();
      console.log({ "3rdTimestamp": blockTimestamp.toString() });
    });
  });
}