import std/times import pkg/asynctest import pkg/chronos import pkg/stint import pkg/dagger/purchasing import ./helpers/mockmarket import ./helpers/mockclock import ./examples suite "Purchasing": var purchasing: Purchasing var market: MockMarket var clock: MockClock var request: StorageRequest setup: market = MockMarket.new() clock = MockClock.new() purchasing = Purchasing.new(market, clock) request = StorageRequest( ask: StorageAsk( duration: uint16.example.u256, size: uint32.example.u256, ) ) proc purchaseAndWait(request: StorageRequest) {.async.} = let purchase = purchasing.purchase(request) market.advanceTimeTo(market.requested[^1].expiry) await purchase.wait() test "submits a storage request when asked": await purchaseAndWait(request) let submitted = market.requested[0] check submitted.ask.duration == request.ask.duration check submitted.ask.size == request.ask.size check submitted.ask.maxPrice == request.ask.maxPrice test "remembers purchases": let purchase1 = purchasing.purchase(request) let purchase2 = purchasing.purchase(request) check purchasing.getPurchase(purchase1.id) == some purchase1 check purchasing.getPurchase(purchase2.id) == some purchase2 test "has a default value for proof probability": check purchasing.proofProbability != 0.u256 test "can change default value for proof probability": purchasing.proofProbability = 42.u256 await purchaseAndWait(request) check market.requested[0].ask.proofProbability == 42.u256 test "can override proof probability per request": request.ask.proofProbability = 42.u256 await purchaseAndWait(request) check market.requested[0].ask.proofProbability == 42.u256 test "has a default value for request expiration interval": check purchasing.requestExpiryInterval != 0.u256 test "can change default value for request expiration interval": purchasing.requestExpiryInterval = 42.u256 let start = getTime().toUnix() await purchaseAndWait(request) check market.requested[0].expiry == (start + 42).u256 test "can override expiry time per request": let expiry = (getTime().toUnix() + 42).u256 request.expiry = expiry await purchaseAndWait(request) check market.requested[0].expiry == expiry test "includes a random nonce in every storage request": await purchaseAndWait(request) await purchaseAndWait(request) check market.requested[0].nonce != market.requested[1].nonce proc createOffer(request: StorageRequest): StorageOffer = StorageOffer( requestId: request.id, expiry: (getTime() + initDuration(hours = 1)).toUnix().u256 ) test "selects the cheapest offer": let purchase = purchasing.purchase(request) let request = market.requested[0] var offer1, offer2 = createOffer(request) offer1.price = 20.u256 offer2.price = 10.u256 discard await market.offerStorage(offer1) discard await market.offerStorage(offer2) market.advanceTimeTo(request.expiry) await purchase.wait() check market.selected[0] == offer2.id test "ignores offers that expired": let expired = (getTime() - initTimeInterval(hours = 1)).toUnix().u256 let purchase = purchasing.purchase(request) let request = market.requested[0] var offer1, offer2 = request.createOffer() offer1.price = 20.u256 offer2.price = 10.u256 offer2.expiry = expired discard await market.offerStorage(offer1) discard await market.offerStorage(offer2) market.advanceTimeTo(request.expiry) await purchase.wait() check market.selected[0] == offer1.id test "has a default expiration margin for offers": check purchasing.offerExpiryMargin != 0.u256 test "ignores offers that are about to expire": let expiryMargin = purchasing.offerExpiryMargin let purchase = purchasing.purchase(request) let request = market.requested[0] var offer1, offer2 = request.createOffer() offer1.price = 20.u256 offer2.price = 10.u256 offer2.expiry = getTime().toUnix().u256 + expiryMargin - 1 discard await market.offerStorage(offer1) discard await market.offerStorage(offer2) market.advanceTimeTo(request.expiry) await purchase.wait() check market.selected[0] == offer1.id