ocean.js/test/unit/balancer/Balancer.test.ts

import { assert } from 'chai'
import { TestContractHandler } from '../../TestContractHandler'
import { BalancerContractHandler } from '../../BalancerContractHandler'
import { DataTokens } from '../../../src/datatokens/Datatokens'
import { Balancer } from '../../../src/balancer/balancerlib'
import { Ocean } from '../../../src/ocean/Ocean'
import { Config } from '../../../src/models/Config'

const Web3 = require('web3')
const web3 = new Web3('http://127.0.0.1:8545')
const factory = require('@oceanprotocol/contracts/artifacts/development/Factory.json')
const datatokensTemplate = require('@oceanprotocol/contracts/artifacts/development/DataTokenTemplate.json')

// this will be replaced by our SFactory/SPool
const balancerFactory = require('../../../src/balancer/artifacts/BFactory.json')
const balancerPool = require('../../../src/balancer/artifacts/BPool.json')

describe('Balancer flow', () => {
    let oceanTokenAddress
    let balancerFactoryAddress
    let balancer
    let balancerContracts
    let oceandatatoken
    let alicePool
    let alicePoolAddress
    let bobPool
    let currentDtPrice
    let owner
    let bob
    let alice
    let contracts
    let datatoken
    let tokenAddress
    let transactionId
    const tokenAmount = web3.utils.toWei('1000')
    const transferAmount = web3.utils.toWei('200')
    const blob = 'http://localhost:8030/api/v1/services/consume'
    describe('#test', () => {
        it('Initialize Ocean contracts v3', async () => {
            contracts = new TestContractHandler(
                factory.abi,
                datatokensTemplate.abi,
                datatokensTemplate.bytecode,
                factory.bytecode,
                web3
            )
            await contracts.getAccounts()
            owner = contracts.accounts[0]
            alice = contracts.accounts[1]
            bob = contracts.accounts[2]
            await contracts.deployContracts(owner)
        })
        it('should initialize datatokens class', async () => {
            datatoken = new DataTokens(
                contracts.factoryAddress,
                factory.abi,
                datatokensTemplate.abi,
                web3
            )
            assert(datatoken !== null)
        })

        it('should create datatokens smart contract', async () => {
            tokenAddress = await datatoken.create(blob, alice)
            assert(tokenAddress !== null)
        })
        it('Create a dummy OceanToken', async () => {
            // Alice creates a Datatoken
            oceandatatoken = new DataTokens(
                contracts.factoryAddress,
                factory.abi,
                datatokensTemplate.abi,
                web3
            )
            oceanTokenAddress = await oceandatatoken.create(blob, alice)
        })
        it('Deploy Balancer Factory', async () => {
            balancerContracts = new BalancerContractHandler(
                balancerFactory.abi,
                balancerFactory.bytecode,
                web3
            )
            await balancerContracts.getAccounts()
            owner = balancerContracts.accounts[0]
            await balancerContracts.deployContracts(owner)
            balancerFactoryAddress = balancerContracts.factoryAddress
            assert(balancerFactoryAddress !== null)
        })
        it('should initialize balancer class', async () => {
            balancer = new Balancer(
                web3,
                alice,
                balancerFactory.abi,
                balancerPool.abi,
                balancerFactoryAddress,
                oceanTokenAddress
            )
            assert(balancer !== null)
        })

        it('Alice mints 1000 tokens', async () => {
            await datatoken.mint(tokenAddress, alice, tokenAmount)
        })
        it('Alice mints 1000 Ocean tokens', async () => {
            await oceandatatoken.mint(oceanTokenAddress, alice, tokenAmount)
        })
        it('Alice transfers 200 ocean token to Bob', async () => {
            const ts = await datatoken.transfer(
                oceanTokenAddress,
                bob,
                transferAmount,
                alice
            )
            transactionId = ts.transactionHash
        })
        it('Alice creates a new balancer pool', async () => {
            /// new pool with total DT = 45 , dt weight=90% with swap fee 2%
            alicePoolAddress = await balancer.createDTPool(tokenAddress, 45, 9, '0.02')
            alicePool = await balancer.loadDTPool(alicePoolAddress)
            assert(alicePool !== null)
        })
        it('Get pool information', async () => {
            const currentTokens = await alicePool.getCurrentTokens()
            assert(currentTokens.length === 2)
            assert(currentTokens.includes(tokenAddress))
            assert(currentTokens.includes(oceanTokenAddress))
        })
        it('Get pool swap fee', async () => {
            const currentSwapFee = await alicePool.getSwapFee()
            assert(currentSwapFee === '0.02')
        })
        it('Get dtPrice from the pool ', async () => {
            currentDtPrice = await alicePool.getDTPrice()
            assert(currentDtPrice > 0)
        })
        it('Get dtToken pool reserve ', async () => {
            const currentDtReserve = await alicePool.getBalance(tokenAddress)
            assert(currentDtReserve > 0)
        })
        it('Get dtToken pool reserve ', async () => {
            const currentOceanReserve = await alicePool.getOceanBalance()
            assert(currentOceanReserve > 0)
        })
        it("Bob should load Alice's pool ", async () => {
            bobPool = new Balancer(
                web3,
                bob,
                balancerFactory.abi,
                balancerPool.abi,
                balancerFactoryAddress,
                oceanTokenAddress
            )
            await bobPool.loadDTPool(alicePoolAddress)
        })
        it('Bob should buy a DT ', async () => {
            const maxPrice = parseFloat(currentDtPrice) * 2
            await bobPool.buyDT('1', '2', String(maxPrice))
            const bobDtBalance = await datatoken.balance(tokenAddress, bob)
            const bobOceanBalance = await datatoken.balance(oceanTokenAddress, bob)
            assert(bobDtBalance > 0)
            assert(bobOceanBalance > 0)
        })
    })
})