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import hre from 'hardhat'
import '@nomiclabs/hardhat-ethers'
import { Contract, utils } from 'ethers'
import { toRpcHexString } from '@eth-optimism/core-utils'
import Artifact__L2OutputOracle from '@eth-optimism/contracts-bedrock/forge-artifacts/L2OutputOracle.sol/L2OutputOracle.json'
import { SignerWithAddress } from '@nomiclabs/hardhat-ethers/signers'
import { expect } from './setup'
import { findOutputForIndex, findFirstUnfinalizedStateBatchIndex } from '../src'
describe('helpers', () => {
const deployConfig = {
l2OutputOracleSubmissionInterval: 6,
l2BlockTime: 2,
l2OutputOracleStartingBlockNumber: 0,
l2OutputOracleStartingTimestamp: 0,
l2OutputOracleProposer: '0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266',
l2OutputOracleChallenger: '0x6925B8704Ff96DEe942623d6FB5e946EF5884b63',
// Can be any non-zero value, 1000 is fine.
finalizationPeriodSeconds: 1000,
}
let signer: SignerWithAddress
before(async () => {
;[signer] = await hre.ethers.getSigners()
})
let L2OutputOracle: Contract
beforeEach(async () => {
const Factory__L2OutputOracle = new hre.ethers.ContractFactory(
Artifact__L2OutputOracle.abi,
Artifact__L2OutputOracle.bytecode.object,
signer
)
L2OutputOracle = await Factory__L2OutputOracle.deploy(
deployConfig.l2OutputOracleSubmissionInterval,
deployConfig.l2BlockTime,
deployConfig.l2OutputOracleStartingBlockNumber,
deployConfig.l2OutputOracleStartingTimestamp,
deployConfig.l2OutputOracleProposer,
deployConfig.l2OutputOracleChallenger,
deployConfig.finalizationPeriodSeconds
)
})
describe('findOutputForIndex', () => {
describe('when the output exists once', () => {
beforeEach(async () => {
const latestBlock = await hre.ethers.provider.getBlock('latest')
const params = {
_outputRoot: utils.formatBytes32String('testhash'),
_l2BlockNumber:
deployConfig.l2OutputOracleStartingBlockNumber +
deployConfig.l2OutputOracleSubmissionInterval,
_l1BlockHash: latestBlock.hash,
_l1BlockNumber: latestBlock.number,
}
await L2OutputOracle.proposeL2Output(
params._outputRoot,
params._l2BlockNumber,
params._l1BlockHash,
params._l1BlockNumber
)
})
it('should return the output', async () => {
const output = await findOutputForIndex(L2OutputOracle, 0)
expect(output.l2OutputIndex).to.equal(0)
})
})
describe('when the output does not exist', () => {
it('should throw an error', async () => {
await expect(
findOutputForIndex(L2OutputOracle, 0)
).to.eventually.be.rejectedWith('unable to find output for index')
})
})
})
describe('findFirstUnfinalizedIndex', () => {
describe('when the chain is more then FPW seconds old', () => {
beforeEach(async () => {
const latestBlock = await hre.ethers.provider.getBlock('latest')
const params = {
_l2BlockNumber:
deployConfig.l2OutputOracleStartingBlockNumber +
deployConfig.l2OutputOracleSubmissionInterval,
_l1BlockHash: latestBlock.hash,
_l1BlockNumber: latestBlock.number,
}
await L2OutputOracle.proposeL2Output(
utils.formatBytes32String('outputRoot1'),
params._l2BlockNumber,
params._l1BlockHash,
params._l1BlockNumber
)
// Simulate FPW passing
await hre.ethers.provider.send('evm_increaseTime', [
toRpcHexString(deployConfig.finalizationPeriodSeconds * 2),
])
await L2OutputOracle.proposeL2Output(
utils.formatBytes32String('outputRoot2'),
params._l2BlockNumber + deployConfig.l2OutputOracleSubmissionInterval,
params._l1BlockHash,
params._l1BlockNumber
)
await L2OutputOracle.proposeL2Output(
utils.formatBytes32String('outputRoot3'),
params._l2BlockNumber +
deployConfig.l2OutputOracleSubmissionInterval * 2,
params._l1BlockHash,
params._l1BlockNumber
)
})
it('should find the first batch older than the FPW', async () => {
const first = await findFirstUnfinalizedStateBatchIndex(
L2OutputOracle,
deployConfig.finalizationPeriodSeconds
)
expect(first).to.equal(1)
})
})
describe('when the chain is less than FPW seconds old', () => {
beforeEach(async () => {
const latestBlock = await hre.ethers.provider.getBlock('latest')
const params = {
_outputRoot: utils.formatBytes32String('testhash'),
_l2BlockNumber:
deployConfig.l2OutputOracleStartingBlockNumber +
deployConfig.l2OutputOracleSubmissionInterval,
_l1BlockHash: latestBlock.hash,
_l1BlockNumber: latestBlock.number,
}
await L2OutputOracle.proposeL2Output(
params._outputRoot,
params._l2BlockNumber,
params._l1BlockHash,
params._l1BlockNumber
)
await L2OutputOracle.proposeL2Output(
params._outputRoot,
params._l2BlockNumber + deployConfig.l2OutputOracleSubmissionInterval,
params._l1BlockHash,
params._l1BlockNumber
)
await L2OutputOracle.proposeL2Output(
params._outputRoot,
params._l2BlockNumber +
deployConfig.l2OutputOracleSubmissionInterval * 2,
params._l1BlockHash,
params._l1BlockNumber
)
})
it('should return zero', async () => {
const first = await findFirstUnfinalizedStateBatchIndex(
L2OutputOracle,
deployConfig.finalizationPeriodSeconds
)
expect(first).to.equal(0)
})
})
describe('when no batches submitted for the entire FPW', () => {
beforeEach(async () => {
const latestBlock = await hre.ethers.provider.getBlock('latest')
const params = {
_outputRoot: utils.formatBytes32String('testhash'),
_l2BlockNumber:
deployConfig.l2OutputOracleStartingBlockNumber +
deployConfig.l2OutputOracleSubmissionInterval,
_l1BlockHash: latestBlock.hash,
_l1BlockNumber: latestBlock.number,
}
await L2OutputOracle.proposeL2Output(
params._outputRoot,
params._l2BlockNumber,
params._l1BlockHash,
params._l1BlockNumber
)
await L2OutputOracle.proposeL2Output(
params._outputRoot,
params._l2BlockNumber + deployConfig.l2OutputOracleSubmissionInterval,
params._l1BlockHash,
params._l1BlockNumber
)
await L2OutputOracle.proposeL2Output(
params._outputRoot,
params._l2BlockNumber +
deployConfig.l2OutputOracleSubmissionInterval * 2,
params._l1BlockHash,
params._l1BlockNumber
)
// Simulate FPW passing and no new batches
await hre.ethers.provider.send('evm_increaseTime', [
toRpcHexString(deployConfig.finalizationPeriodSeconds * 2),
])
// Mine a block to force timestamp to update
await hre.ethers.provider.send('hardhat_mine', ['0x1'])
})
it('should return undefined', async () => {
const first = await findFirstUnfinalizedStateBatchIndex(
L2OutputOracle,
deployConfig.finalizationPeriodSeconds
)
expect(first).to.equal(undefined)
})
})
})
})