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

describe("Counter", function () {
  it("Should emit the Increment event when calling the inc() function", async function () {
    const counter = await ethers.deployContract("Counter");

    // Di ethers v6, gunakan BigInt untuk literal angka
    await expect(counter.inc())
      .to.emit(counter, "Increment")
      .withArgs(1n);  // pakai 1n (BigInt)
  });

  it("The sum of the Increment events should match the current value", async function () {
    const counter = await ethers.deployContract("Counter");
    const deploymentBlockNumber = await ethers.provider.getBlockNumber();

    // run a series of increments
    for (let i = 1; i <= 10; i++) {
      await counter.incBy(i);
    }

    const events = await counter.queryFilter(
      counter.filters.Increment(),
      deploymentBlockNumber,
      "latest"
    );

    // check that the aggregated events match the current value
    let total = 0n;
    for (const event of events) {
      total += event.args.by; // event.args.by udah BigInt di ethers v6
    }

    expect(await counter.x()).to.equal(total);
  });
});