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71 lines
2.8 KiB
71 lines
2.8 KiB
const { contract, accounts, web3 } = require('@openzeppelin/test-environment');
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const { BN, expectRevert } = require('@openzeppelin/test-helpers');
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const { expect } = require('chai');
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const Create2Impl = contract.fromArtifact('Create2Impl');
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const ERC20Mock = contract.fromArtifact('ERC20Mock');
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const ERC20 = contract.fromArtifact('ERC20');
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describe('Create2', function () {
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const [deployerAccount] = accounts;
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const salt = 'salt message';
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const saltHex = web3.utils.soliditySha3(salt);
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const constructorByteCode = `${ERC20Mock.bytecode}${web3.eth.abi
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.encodeParameters(['address', 'uint256'], [deployerAccount, 100]).slice(2)
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}`;
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beforeEach(async function () {
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this.factory = await Create2Impl.new();
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});
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it('should compute the correct contract address', async function () {
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const onChainComputed = await this.factory
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.computeAddress(saltHex, constructorByteCode);
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const offChainComputed =
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computeCreate2Address(saltHex, constructorByteCode, this.factory.address);
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expect(onChainComputed).to.equal(offChainComputed);
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});
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it('should compute the correct contract address with deployer', async function () {
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const onChainComputed = await this.factory
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.computeAddress(saltHex, constructorByteCode, deployerAccount);
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const offChainComputed =
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computeCreate2Address(saltHex, constructorByteCode, deployerAccount);
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expect(onChainComputed).to.equal(offChainComputed);
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});
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it('should deploy a ERC20 from inline assembly code', async function () {
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const offChainComputed =
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computeCreate2Address(saltHex, ERC20.bytecode, this.factory.address);
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await this.factory
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.deploy(saltHex, ERC20.bytecode, { from: deployerAccount });
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expect(ERC20.bytecode).to.include((await web3.eth.getCode(offChainComputed)).slice(2));
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});
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it('should deploy a ERC20Mock with correct balances', async function () {
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const offChainComputed =
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computeCreate2Address(saltHex, constructorByteCode, this.factory.address);
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await this.factory
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.deploy(saltHex, constructorByteCode, { from: deployerAccount });
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const erc20 = await ERC20Mock.at(offChainComputed);
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expect(await erc20.balanceOf(deployerAccount)).to.be.bignumber.equal(new BN(100));
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});
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it('should failed deploying a contract in an existent address', async function () {
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await this.factory.deploy(saltHex, constructorByteCode, { from: deployerAccount });
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await expectRevert(
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this.factory.deploy(saltHex, constructorByteCode, { from: deployerAccount }), 'Create2: Failed on deploy'
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);
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});
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});
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function computeCreate2Address (saltHex, bytecode, deployer) {
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return web3.utils.toChecksumAddress(`0x${web3.utils.sha3(`0x${[
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'ff',
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deployer,
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saltHex,
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web3.utils.soliditySha3(bytecode),
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].map(x => x.replace(/0x/, '')).join('')}`).slice(-40)}`);
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}
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