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WormholeMessenger.js
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WormholeMessenger.js
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/*global describe, context, beforeEach, it*/
const { expect } = require("chai");
const { ethers } = require("hardhat");
describe("WormholeMessenger", function () {
let targetRelayer;
let wormholeMessenger;
let olas;
let signers;
let deployer;
const AddressZero = ethers.constants.AddressZero;
const Bytes32Zero = "0x" + "0".repeat(64);
const sourceChain = 2;
const addressPrefix = "0x" + "0".repeat(24);
beforeEach(async function () {
signers = await ethers.getSigners();
deployer = signers[0];
// Deploy the mock of TargetRelayer contract
const TargetRelayer = await ethers.getContractFactory("MockL2Relayer");
targetRelayer = await TargetRelayer.deploy(deployer.address, deployer.address);
await targetRelayer.deployed();
// The deployer is the analogue of the Timelock on L1 and the FxRoot mock on L1 as well
const WormholeMessenger = await ethers.getContractFactory("WormholeMessenger");
wormholeMessenger = await WormholeMessenger.deploy(targetRelayer.address,
addressPrefix + deployer.address.slice(2), sourceChain);
await wormholeMessenger.deployed();
// Change the WormholeMessenger contract address in the TargetRelayer
await targetRelayer.changeBridgeMessenger(wormholeMessenger.address);
// OLAS represents a contract deployed on L2
const OLAS = await ethers.getContractFactory("OLAS");
olas = await OLAS.deploy();
await olas.deployed();
});
context("Initialization", async function () {
it("Deploying with zero addresses", async function () {
const WormholeMessenger = await ethers.getContractFactory("WormholeMessenger");
await expect(
WormholeMessenger.deploy(AddressZero, Bytes32Zero, 0)
).to.be.revertedWithCustomError(wormholeMessenger, "ZeroAddress");
await expect(
WormholeMessenger.deploy(signers[1].address, Bytes32Zero, 0)
).to.be.revertedWithCustomError(wormholeMessenger, "ZeroValue");
await expect(
WormholeMessenger.deploy(signers[1].address, addressPrefix + signers[2].address.slice(2), 0)
).to.be.revertedWithCustomError(wormholeMessenger, "ZeroValue");
});
});
context("Process message from source", async function () {
it("Should fail when trying to call from incorrect contract addresses and chain Id", async function () {
await expect(
wormholeMessenger.connect(deployer).receiveWormholeMessages("0x", [], Bytes32Zero, 0, Bytes32Zero)
).to.be.revertedWithCustomError(wormholeMessenger, "TargetRelayerOnly");
// Simulate incorrect sourceGovernor address
await targetRelayer.changeSourceGovernor(AddressZero);
await expect(
targetRelayer.receiveWormholeMessages("0x")
).to.be.revertedWithCustomError(wormholeMessenger, "SourceGovernorOnly32");
// Simulate incorrect source chain Id
await targetRelayer.changeSourceChain(0);
await expect(
targetRelayer.receiveWormholeMessages("0x")
).to.be.revertedWithCustomError(wormholeMessenger, "WrongSourceChainId");
});
it("Should fail when trying to process message with the incorrect minimal payload length", async function () {
await expect(
targetRelayer.receiveWormholeMessages("0x")
).to.be.revertedWithCustomError(wormholeMessenger, "IncorrectDataLength");
});
it("Should fail when trying to change the source governor from any other contract / EOA", async function () {
await expect(
wormholeMessenger.connect(deployer).changeSourceGovernor(addressPrefix + signers[1].address.slice(2))
).to.be.revertedWithCustomError(wormholeMessenger, "SelfCallOnly");
});
it("Should fail when trying to call with the zero address", async function () {
const target = AddressZero;
const value = 0;
const payload = "";
const data = ethers.utils.solidityPack(
["address", "uint96", "uint32"],
[target, value, payload.length]
);
await expect(
targetRelayer.receiveWormholeMessages(data)
).to.be.revertedWithCustomError(wormholeMessenger, "ZeroAddress");
});
it("Should fail when trying to call with the incorrectly provided payload", async function () {
const target = olas.address;
const value = 0;
const rawPayload = "0x" + "abcd".repeat(10);
const payload = ethers.utils.arrayify(rawPayload);
const data = ethers.utils.solidityPack(
["address", "uint96", "uint32", "bytes"],
[target, value, payload.length, payload]
);
await expect(
targetRelayer.receiveWormholeMessages(data)
).to.be.revertedWithCustomError(wormholeMessenger, "TargetExecFailed");
});
it("Unpack the data and call one specified target on the OLAS contract", async function () {
// Minter of OLAS must be the wormholeMessenger contract
await olas.connect(deployer).changeMinter(wormholeMessenger.address);
// OLAS contract across the bridge must mint 100 OLAS for the deployer
const amountToMint = 100;
const rawPayload = olas.interface.encodeFunctionData("mint", [deployer.address, amountToMint]);
// Pack the data into one contiguous buffer
const target = olas.address;
const value = 0;
const payload = ethers.utils.arrayify(rawPayload);
const data = ethers.utils.solidityPack(
["address", "uint96", "uint32", "bytes"],
[target, value, payload.length, payload]
);
// Execute the unpacked transaction
await targetRelayer.receiveWormholeMessages(data);
// Check that OLAS tokens were minted to the deployer
const balance = Number(await olas.balanceOf(deployer.address));
expect(balance).to.equal(amountToMint);
// Try to unpack with the same delivery hash
await expect(
targetRelayer.receiveWormholeMessages(data)
).to.be.revertedWithCustomError(wormholeMessenger, "AlreadyDelivered");
});
it("Unpack the data and call two specified targets on the OLAS contract", async function () {
// Minter of OLAS must be the wormholeMessenger contract
await olas.connect(deployer).changeMinter(wormholeMessenger.address);
// Change OLAS owner to the wormholeMessenger contract
await olas.connect(deployer).changeOwner(wormholeMessenger.address);
// FxGivernorTunnel changes the minter to self as being the owner, then mint 100 OLAS for the deployer
const amountToMint = 100;
const payloads = [olas.interface.encodeFunctionData("changeMinter", [wormholeMessenger.address]),
olas.interface.encodeFunctionData("mint", [deployer.address, amountToMint])];
// Pack the data into one contiguous buffer
const targets = [olas.address, olas.address];
const values = [0, 0];
let data = "0x";
for (let i = 0; i < targets.length; i++) {
const payload = ethers.utils.arrayify(payloads[i]);
const encoded = ethers.utils.solidityPack(
["address", "uint96", "uint32", "bytes"],
[targets[i], values[i], payload.length, payload]
);
data += encoded.slice(2);
}
// Execute the unpacked transaction
await targetRelayer.receiveWormholeMessages(data);
// Check that OLAS tokens were minted to the deployer
const balance = Number(await olas.balanceOf(deployer.address));
expect(balance).to.equal(amountToMint);
});
it("Change the source governor", async function () {
const rawPayload = wormholeMessenger.interface.encodeFunctionData("changeSourceGovernor",
[addressPrefix + signers[1].address.slice(2)]);
// Pack the data into one contiguous buffer
const target = wormholeMessenger.address;
const value = 0;
const payload = ethers.utils.arrayify(rawPayload);
const data = ethers.utils.solidityPack(
["address", "uint96", "uint32", "bytes"],
[target, value, payload.length, payload]
);
// Execute the unpacked transaction
await targetRelayer.receiveWormholeMessages(data);
// Check that the new source governor is signers[1].address
const sourceGovernor = await wormholeMessenger.sourceGovernor();
expect(sourceGovernor).to.equal((addressPrefix + signers[1].address.slice(2)).toLowerCase());
});
it("Should fail when trying to change the source governor to the zero address", async function () {
const rawPayload = wormholeMessenger.interface.encodeFunctionData("changeSourceGovernor", [Bytes32Zero]);
// Pack the data into one contiguous buffer
const target = wormholeMessenger.address;
const value = 0;
const payload = ethers.utils.arrayify(rawPayload);
const data = ethers.utils.solidityPack(
["address", "uint96", "uint32", "bytes"],
[target, value, payload.length, payload]
);
// Execute the unpacked transaction
await expect(
targetRelayer.receiveWormholeMessages(data)
).to.be.revertedWithCustomError(wormholeMessenger, "TargetExecFailed");
});
it("Unpack the data and call one specified target to send funds", async function () {
const amount = ethers.utils.parseEther("1");
// Pack the data into one contiguous buffer
const target = deployer.address;
const value = amount;
const payloadLength = 0;
const data = ethers.utils.solidityPack(
["address", "uint96", "uint32"],
[target, value, payloadLength]
);
// Try to execute the unpacked transaction without the contract having enough balance
await expect(
targetRelayer.receiveWormholeMessages(data)
).to.be.revertedWithCustomError(wormholeMessenger, "InsufficientBalance");
// Send funds to the contract
await deployer.sendTransaction({to: wormholeMessenger.address, value: amount});
// Now the funds can be transferred
const balanceBefore = await ethers.provider.getBalance(deployer.address);
const tx = await targetRelayer.receiveWormholeMessages(data);
const receipt = await tx.wait();
const gasCost = ethers.BigNumber.from(receipt.gasUsed).mul(ethers.BigNumber.from(tx.gasPrice));
const balanceAfter = await ethers.provider.getBalance(deployer.address);
const balanceDiff = balanceAfter.sub(balanceBefore).add(gasCost);
expect(balanceDiff).to.equal(amount);
});
it("Unpack the data and call one specified target to send funds and to mint OLAS", async function () {
const amount = ethers.utils.parseEther("1");
const amountToMint = 100;
// Minter of OLAS must be the wormholeMessenger contract
await olas.connect(deployer).changeMinter(wormholeMessenger.address);
// Pack the first part of data with the zero payload
let target = deployer.address;
let value = amount;
const payloadLength = 0;
let data = ethers.utils.solidityPack(
["address", "uint96", "uint32"],
[target, value, payloadLength]
);
// OLAS contract across the bridge must mint 100 OLAS for the deployer
const rawPayload = olas.interface.encodeFunctionData("mint", [deployer.address, amountToMint]);
// Pack the second part of data
target = olas.address;
value = 0;
const payload = ethers.utils.arrayify(rawPayload);
data += ethers.utils.solidityPack(
["address", "uint96", "uint32", "bytes"],
[target, value, payload.length, payload]
).slice(2);
// Send funds to the contract
await deployer.sendTransaction({to: wormholeMessenger.address, value: amount});
// Execute the function and check for the deployer balance
const balanceBefore = await ethers.provider.getBalance(deployer.address);
const tx = await targetRelayer.receiveWormholeMessages(data);
const receipt = await tx.wait();
const gasCost = ethers.BigNumber.from(receipt.gasUsed).mul(ethers.BigNumber.from(tx.gasPrice));
const balanceAfter = await ethers.provider.getBalance(deployer.address);
const balanceDiff = balanceAfter.sub(balanceBefore).add(gasCost);
expect(balanceDiff).to.equal(amount);
// Check that OLAS tokens were minted to the deployer
const olasBalance = Number(await olas.balanceOf(deployer.address));
expect(olasBalance).to.equal(amountToMint);
});
});
});