45 lines
1.5 KiB
TypeScript
45 lines
1.5 KiB
TypeScript
import { expect } from './shared/expect'
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import { LiquidityMathTest } from '../typechain/LiquidityMathTest'
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import { ethers, waffle } from 'hardhat'
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import snapshotGasCost from './shared/snapshotGasCost'
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const { BigNumber } = ethers
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describe('LiquidityMath', () => {
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let liquidityMath: LiquidityMathTest
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const fixture = async () => {
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const factory = await ethers.getContractFactory('LiquidityMathTest')
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return (await factory.deploy()) as LiquidityMathTest
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}
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beforeEach('deploy LiquidityMathTest', async () => {
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liquidityMath = await waffle.loadFixture(fixture)
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})
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describe('#addDelta', () => {
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it('1 + 0', async () => {
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expect(await liquidityMath.addDelta(1, 0)).to.eq(1)
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})
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it('1 + -1', async () => {
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expect(await liquidityMath.addDelta(1, -1)).to.eq(0)
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})
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it('1 + 1', async () => {
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expect(await liquidityMath.addDelta(1, 1)).to.eq(2)
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})
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it('2**128-15 + 15 overflows', async () => {
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await expect(liquidityMath.addDelta(BigNumber.from(2).pow(128).sub(15), 15)).to.be.revertedWith('LA')
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})
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it('0 + -1 underflows', async () => {
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await expect(liquidityMath.addDelta(0, -1)).to.be.revertedWith('LS')
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})
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it('3 + -4 underflows', async () => {
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await expect(liquidityMath.addDelta(3, -4)).to.be.revertedWith('LS')
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})
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it('gas add', async () => {
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await snapshotGasCost(liquidityMath.getGasCostOfAddDelta(15, 4))
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})
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it('gas sub', async () => {
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await snapshotGasCost(liquidityMath.getGasCostOfAddDelta(15, -4))
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})
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})
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})
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