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import { BlockchainLifecycle } from '@0xproject/dev-utils';
import { assetProxyUtils, generatePseudoRandomSalt } from '@0xproject/order-utils';
import { BigNumber } from '@0xproject/utils';
import * as chai from 'chai';
import ethUtil = require('ethereumjs-util');
import { TestAssetDataDecodersContract } from '../../src/generated_contract_wrappers/test_asset_data_decoders';
import { artifacts } from '../../src/utils/artifacts';
import { chaiSetup } from '../../src/utils/chai_setup';
import { provider, txDefaults, web3Wrapper } from '../../src/utils/web3_wrapper';
chaiSetup.configure();
const expect = chai.expect;
const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
describe('TestAssetDataDecoders', () => {
let testAssetProxyDecoder: TestAssetDataDecodersContract;
let testAddress: string;
before(async () => {
await blockchainLifecycle.startAsync();
});
after(async () => {
await blockchainLifecycle.revertAsync();
});
before(async () => {
// Setup accounts & addresses
const accounts = await web3Wrapper.getAvailableAddressesAsync();
testAddress = accounts[0];
testAssetProxyDecoder = await TestAssetDataDecodersContract.deployFrom0xArtifactAsync(
artifacts.TestAssetDataDecoders,
provider,
txDefaults,
);
});
beforeEach(async () => {
await blockchainLifecycle.startAsync();
});
afterEach(async () => {
await blockchainLifecycle.revertAsync();
});
describe('Asset Data Decoders', () => {
it('should correctly decode ERC721 asset data', async () => {
const tokenId = generatePseudoRandomSalt();
const encodedAssetData = assetProxyUtils.encodeERC721AssetData(testAddress, tokenId);
const encodedAssetDataWithoutProxyId = encodedAssetData.slice(0, -2);
const expectedDecodedAssetData = assetProxyUtils.decodeERC721AssetData(encodedAssetData);
let decodedTokenAddress: string;
let decodedTokenId: BigNumber;
let decodedData: string;
[
decodedTokenAddress,
decodedTokenId,
decodedData,
] = await testAssetProxyDecoder.publicDecodeERC721Data.callAsync(encodedAssetDataWithoutProxyId);
expect(decodedTokenAddress).to.be.equal(expectedDecodedAssetData.tokenAddress);
expect(decodedTokenId).to.be.bignumber.equal(expectedDecodedAssetData.tokenId);
expect(decodedData).to.be.equal(expectedDecodedAssetData.receiverData);
});
it('should correctly decode ERC721 asset data with receiver data', async () => {
const tokenId = generatePseudoRandomSalt();
const receiverDataFirst32Bytes = ethUtil.bufferToHex(
assetProxyUtils.encodeUint256(generatePseudoRandomSalt()),
);
const receiverDataExtraBytes = 'FFFF';
// We add extra bytes to generate a value that doesn't fit perfectly into one word
const receiverData = receiverDataFirst32Bytes + receiverDataExtraBytes;
const encodedAssetData = assetProxyUtils.encodeERC721AssetData(testAddress, tokenId, receiverData);
const expectedDecodedAssetData = assetProxyUtils.decodeERC721AssetData(encodedAssetData);
let decodedTokenAddress: string;
let decodedTokenId: BigNumber;
let decodedReceiverData: string;
[
decodedTokenAddress,
decodedTokenId,
decodedReceiverData,
] = await testAssetProxyDecoder.publicDecodeERC721Data.callAsync(encodedAssetData);
expect(decodedTokenAddress).to.be.equal(expectedDecodedAssetData.tokenAddress);
expect(decodedTokenId).to.be.bignumber.equal(expectedDecodedAssetData.tokenId);
expect(decodedReceiverData).to.be.equal(expectedDecodedAssetData.receiverData);
});
});
});
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