hyperlane-monorepo/solidity/app/test/xAppConnectionClient.test.ts

import { ethers } from 'hardhat';
import { expect } from 'chai';
import { SignerWithAddress } from '@nomiclabs/hardhat-ethers/signers';
import {
  Outbox__factory,
  XAppConnectionManager,
  XAppConnectionManager__factory,
} from '@abacus-network/core';

import {
  TestXAppConnectionClient,
  TestXAppConnectionClient__factory,
} from '../types';

const ONLY_OWNER_REVERT_MSG = 'Ownable: caller is not the owner';

describe('XAppConnectionClient', async () => {
  let connectionClient: TestXAppConnectionClient,
    connectionManager: XAppConnectionManager,
    signer: SignerWithAddress,
    nonOwner: SignerWithAddress;

  before(async () => {
    [signer, nonOwner] = await ethers.getSigners();
  });

  beforeEach(async () => {
    const connectionManagerFactory = new XAppConnectionManager__factory(signer);
    connectionManager = await connectionManagerFactory.deploy();

    const connectionClientFactory = new TestXAppConnectionClient__factory(
      signer,
    );
    connectionClient = await connectionClientFactory.deploy();
    await connectionClient.initialize(connectionManager.address);
  });

  it('Cannot be initialized twice', async () => {
    await expect(
      connectionClient.initialize(ethers.constants.AddressZero),
    ).to.be.revertedWith('Initializable: contract is already initialized');
  });

  it('owner can set connection manager', async () => {
    const newConnectionManager = signer.address;
    expect(await connectionClient.xAppConnectionManager()).to.not.equal(
      newConnectionManager,
    );
    await connectionClient.setXAppConnectionManager(newConnectionManager);
    expect(await connectionClient.xAppConnectionManager()).to.equal(
      newConnectionManager,
    );
  });

  it('non-owner cannot set connection manager', async () => {
    await expect(
      connectionClient
        .connect(nonOwner)
        .setXAppConnectionManager(signer.address),
    ).to.be.revertedWith(ONLY_OWNER_REVERT_MSG);
  });

  it('returns outbox from connection manager', async () => {
    const outbox = nonOwner.address;
    expect(await connectionClient.outbox()).to.equal(
      ethers.constants.AddressZero,
    );
    await connectionManager.setOutbox(outbox);
    expect(await connectionClient.outbox()).to.equal(outbox);
  });

  it('returns paymaster from connection manager', async () => {
    const paymaster = nonOwner.address;
    expect(await connectionClient.interchainGasPaymaster()).to.equal(
      ethers.constants.AddressZero,
    );
    await connectionManager.setInterchainGasPaymaster(paymaster);
    expect(await connectionClient.interchainGasPaymaster()).to.equal(paymaster);
  });

  it('returns inbox from connection manager', async () => {
    const inbox = nonOwner.address;
    const domain = 1;
    expect(await connectionClient.isInbox(inbox)).to.equal(false);
    await connectionManager.enrollInbox(domain, inbox);
    expect(await connectionClient.isInbox(inbox)).to.equal(true);
  });

  it('returns local domain from outbox', async () => {
    const localDomain = 3;
    const outboxFactory = new Outbox__factory(signer);
    const outbox = await outboxFactory.deploy(localDomain);
    await connectionManager.setOutbox(outbox.address);
    expect(await connectionClient.localDomain()).to.equal(localDomain);
  });
});