121 lines
3.9 KiB
JavaScript
121 lines
3.9 KiB
JavaScript
const { expect } = require("chai")
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const { ethers, deployments } = require("hardhat")
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const { hexlify, randomBytes } = ethers.utils
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const { AddressZero } = ethers.constants
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const { exampleRequest } = require("./examples")
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const { advanceTime, advanceTimeTo, currentTime } = require("./evm")
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const { requestId, slotId } = require("./ids")
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const { periodic } = require("./time")
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describe("Storage", function () {
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const proof = hexlify(randomBytes(42))
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let storage
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let token
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let client, host
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let request
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let collateralAmount, slashMisses, slashPercentage
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let slot
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let id
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function switchAccount(account) {
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token = token.connect(account)
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storage = storage.connect(account)
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}
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beforeEach(async function () {
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;[client, host] = await ethers.getSigners()
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await deployments.fixture(["TestToken", "Storage"])
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token = await ethers.getContract("TestToken")
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storage = await ethers.getContract("Storage")
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await token.mint(client.address, 1000)
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await token.mint(host.address, 1000)
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collateralAmount = await storage.collateralAmount()
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slashMisses = await storage.slashMisses()
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slashPercentage = await storage.slashPercentage()
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request = exampleRequest()
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request.client = client.address
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id = requestId(request)
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slot = {
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request: requestId(request),
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index: request.content.erasure.totalNodes / 2,
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}
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switchAccount(client)
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await token.approve(storage.address, request.ask.reward)
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await storage.requestStorage(request)
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switchAccount(host)
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await token.approve(storage.address, collateralAmount)
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await storage.deposit(collateralAmount)
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})
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it("can retrieve storage requests", async function () {
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const id = requestId(request)
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const retrieved = await storage.getRequest(id)
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expect(retrieved.client).to.equal(request.client)
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expect(retrieved.expiry).to.equal(request.expiry)
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expect(retrieved.nonce).to.equal(request.nonce)
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})
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it("can retrieve host that fulfilled request", async function () {
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expect(await storage.getHost(requestId(request))).to.equal(AddressZero)
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await storage.fulfillRequest(requestId(request), proof)
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expect(await storage.getHost(requestId(request))).to.equal(host.address)
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})
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describe("ending the contract", function () {
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async function waitUntilEnd() {
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const end = (await storage.proofEnd(slotId(slot))).toNumber()
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await advanceTimeTo(end)
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}
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it("unlocks the host collateral", async function () {
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await storage.fillSlot(slot.request, slot.index, proof)
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await waitUntilEnd()
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await expect(storage.withdraw()).not.to.be.reverted
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})
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})
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describe("slashing when missing proofs", function () {
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let period, periodOf, periodEnd
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beforeEach(async function () {
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period = (await storage.proofPeriod()).toNumber()
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;({ periodOf, periodEnd } = periodic(period))
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})
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async function waitUntilProofIsRequired() {
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await advanceTimeTo(periodEnd(periodOf(await currentTime())))
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while (
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!(
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(await storage.isProofRequired(id)) &&
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(await storage.getPointer(id)) < 250
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)
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) {
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await advanceTime(period)
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}
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}
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it("reduces collateral when too many proofs are missing", async function () {
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await storage.fulfillRequest(requestId(request), proof)
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for (let i = 0; i < slashMisses; i++) {
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await waitUntilProofIsRequired()
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let missedPeriod = periodOf(await currentTime())
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await advanceTime(period)
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await storage.markProofAsMissing(id, missedPeriod)
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}
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const expectedBalance = (collateralAmount * (100 - slashPercentage)) / 100
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expect(await storage.balanceOf(host.address)).to.equal(expectedBalance)
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})
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})
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})
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// TODO: implement checking of actual proofs of storage, instead of dummy bool
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// TODO: allow other host to take over contract when too many missed proofs
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// TODO: small partial payouts when proofs are being submitted
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// TODO: reward caller of markProofAsMissing
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