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72 lines
2.7 KiB
72 lines
2.7 KiB
const { ethers } = require('hardhat');
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const { expect } = require('chai');
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const { loadFixture } = require('@nomicfoundation/hardhat-network-helpers');
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async function fixture() {
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const [holder, alice, bruce] = await ethers.getSigners();
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const amount = 12_000n;
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const helper = await ethers.deployContract('MulticallHelper');
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const mock = await ethers.deployContract('$ERC20MulticallMock', ['name', 'symbol']);
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await mock.$_mint(holder, amount);
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return { holder, alice, bruce, amount, mock, helper };
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}
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describe('Multicall', function () {
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beforeEach(async function () {
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Object.assign(this, await loadFixture(fixture));
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});
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it('batches function calls', async function () {
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expect(await this.mock.balanceOf(this.alice)).to.equal(0n);
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expect(await this.mock.balanceOf(this.bruce)).to.equal(0n);
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await expect(
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this.mock.multicall([
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this.mock.interface.encodeFunctionData('transfer', [this.alice.address, this.amount / 2n]),
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this.mock.interface.encodeFunctionData('transfer', [this.bruce.address, this.amount / 3n]),
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]),
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)
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.to.emit(this.mock, 'Transfer')
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.withArgs(this.holder, this.alice, this.amount / 2n)
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.to.emit(this.mock, 'Transfer')
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.withArgs(this.holder, this.bruce, this.amount / 3n);
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expect(await this.mock.balanceOf(this.alice)).to.equal(this.amount / 2n);
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expect(await this.mock.balanceOf(this.bruce)).to.equal(this.amount / 3n);
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});
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it('returns an array with the result of each call', async function () {
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await this.mock.transfer(this.helper, this.amount);
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expect(await this.mock.balanceOf(this.helper)).to.equal(this.amount);
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await this.helper.checkReturnValues(this.mock, [this.alice, this.bruce], [this.amount / 2n, this.amount / 3n]);
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});
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it('reverts previous calls', async function () {
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expect(await this.mock.balanceOf(this.alice)).to.equal(0n);
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await expect(
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this.mock.multicall([
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this.mock.interface.encodeFunctionData('transfer', [this.alice.address, this.amount]),
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this.mock.interface.encodeFunctionData('transfer', [this.bruce.address, this.amount]),
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]),
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)
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.to.be.revertedWithCustomError(this.mock, 'ERC20InsufficientBalance')
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.withArgs(this.holder, 0, this.amount);
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expect(await this.mock.balanceOf(this.alice)).to.equal(0n);
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});
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it('bubbles up revert reasons', async function () {
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await expect(
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this.mock.multicall([
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this.mock.interface.encodeFunctionData('transfer', [this.alice.address, this.amount]),
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this.mock.interface.encodeFunctionData('transfer', [this.bruce.address, this.amount]),
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]),
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)
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.to.be.revertedWithCustomError(this.mock, 'ERC20InsufficientBalance')
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.withArgs(this.holder, 0, this.amount);
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});
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});
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