3da05f2812
* upgrade bancor SDK for batch requests * lint * changes after review * deploy bancor bridge * small fixes
73 lines
3.3 KiB
TypeScript
73 lines
3.3 KiB
TypeScript
import { web3Factory, Web3ProviderEngine } from '@0x/dev-utils';
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import { Ethereum, getDecimals } from '@bancor/sdk/dist/blockchains/ethereum';
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import { fromWei, toWei } from '@bancor/sdk/dist/helpers';
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import { BlockchainType } from '@bancor/sdk/dist/types';
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import * as chai from 'chai';
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import * as _ from 'lodash';
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import 'mocha';
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import { BancorFillData, BigNumber } from '../src';
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import { BancorService, token } from '../src/utils/market_operation_utils/bancor_service';
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import { chaiSetup } from './utils/chai_setup';
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chaiSetup.configure();
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const expect = chai.expect;
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const ADDRESS_REGEX = /^(0x)?[0-9a-f]{40}$/i;
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const RPC_URL = `https://mainnet.infura.io/v3/${process.env.INFURA_PROJECT_ID}`;
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const provider: Web3ProviderEngine = web3Factory.getRpcProvider({ rpcUrl: RPC_URL });
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// tslint:disable:custom-no-magic-numbers
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let bancorService: BancorService;
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// These tests test the bancor SDK against mainnet
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// TODO (xianny): After we move asset-swapper out of the monorepo, we should add an env variable to circle CI to run this test
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describe.skip('Bancor Service', () => {
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const eth = '0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee';
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const bnt = '0x1f573d6fb3f13d689ff844b4ce37794d79a7ff1c';
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it('should retrieve the bancor network address', async () => {
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bancorService = await BancorService.createAsync(provider);
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const networkAddress = bancorService.getBancorNetworkAddress();
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expect(networkAddress).to.match(ADDRESS_REGEX);
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});
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it('should retrieve a quote', async () => {
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const amt = new BigNumber(10e18);
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const quotes = await bancorService.getQuotesAsync(eth, bnt, [amt]);
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const fillData = quotes[0].fillData as BancorFillData;
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// get rate from the bancor sdk
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const blockchain = bancorService.sdk._core.blockchains[BlockchainType.Ethereum] as Ethereum;
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const sourceDecimals = await getDecimals(blockchain, token(eth));
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const rate = await bancorService.sdk.pricing.getRateByPath(
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fillData.path.map(p => token(p)),
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fromWei(amt.toString(), sourceDecimals),
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);
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const expectedRate = toWei(rate, await getDecimals(blockchain, token(bnt)));
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expect(fillData.networkAddress).to.match(ADDRESS_REGEX);
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expect(fillData.path[0].toLowerCase()).to.eq(eth);
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expect(fillData.path[2].toLowerCase()).to.eq(bnt);
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expect(fillData.path.length).to.eq(3); // eth -> bnt should be single hop!
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expect(quotes[0].amount.dp(0)).to.bignumber.eq(
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new BigNumber(expectedRate).multipliedBy(bancorService.minReturnAmountBufferPercentage).dp(0),
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);
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});
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// HACK (xianny): for exploring SDK results
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it('should retrieve multiple quotes', async () => {
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const amts = [1, 10, 100, 1000].map(a => new BigNumber(a).multipliedBy(10e18));
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const quotes = await bancorService.getQuotesAsync(eth, bnt, amts);
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quotes.map((q, i) => {
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// tslint:disable:no-console
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const fillData = q.fillData as BancorFillData;
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console.log(
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`Input ${amts[i].toExponential()}; Output: ${q.amount}; Ratio: ${q.amount.dividedBy(amts[i])}, Path: ${
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fillData.path.length
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}\nPath: ${JSON.stringify(fillData.path)}`,
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);
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// tslint:enable:no-console
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});
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});
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});
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