506 lines
28 KiB
TypeScript
506 lines
28 KiB
TypeScript
import { BlockchainLifecycle } from '@0xproject/dev-utils';
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import { assetProxyUtils, generatePseudoRandomSalt } from '@0xproject/order-utils';
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import { AssetProxyId } from '@0xproject/types';
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import { BigNumber } from '@0xproject/utils';
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import BN = require('bn.js');
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import * as chai from 'chai';
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import ethUtil = require('ethereumjs-util');
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import { TestLibBytesContract } from '../../src/generated_contract_wrappers/test_lib_bytes';
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import { artifacts } from '../../src/utils/artifacts';
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import { expectRevertOrOtherErrorAsync, expectRevertOrOtherErrorAsync } from '../../src/utils/assertions';
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import { assetProxyUtils } from '../../src/utils/asset_proxy_utils';
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import { chaiSetup } from '../../src/utils/chai_setup';
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import { constants } from '../../src/utils/constants';
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import { provider, txDefaults, web3Wrapper } from '../../src/utils/web3_wrapper';
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chaiSetup.configure();
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const expect = chai.expect;
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const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
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describe('LibBytes', () => {
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let libBytes: TestLibBytesContract;
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const byteArrayShorterThan32Bytes = '0x012345';
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const byteArrayShorterThan20Bytes = byteArrayShorterThan32Bytes;
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const byteArrayLongerThan32Bytes =
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'0x0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef';
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const byteArrayLongerThan32BytesFirstBytesSwapped =
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'0x2301456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef';
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const byteArrayLongerThan32BytesLastBytesSwapped =
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'0x0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abefcd';
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let testAddress: string;
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const testBytes32 = '0x102030405060708090a0b0c0d0e0f0102030405060708090a0b0c0d0e0f01020';
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const testUint256 = new BigNumber(testBytes32, 16);
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let shortData: string;
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let shortTestBytes: string;
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let shortTestBytesAsBuffer: Buffer;
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let wordOfData: string;
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let wordOfTestBytes: string;
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let wordOfTestBytesAsBuffer: Buffer;
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let longData: string;
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let longTestBytes: string;
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let longTestBytesAsBuffer: Buffer;
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before(async () => {
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await blockchainLifecycle.startAsync();
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});
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after(async () => {
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await blockchainLifecycle.revertAsync();
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});
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before(async () => {
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// Setup accounts & addresses
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const accounts = await web3Wrapper.getAvailableAddressesAsync();
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testAddress = accounts[1];
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// Deploy LibBytes
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libBytes = await TestLibBytesContract.deployFrom0xArtifactAsync(artifacts.TestLibBytes, provider, txDefaults);
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// Verify lengths of test data
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const byteArrayShorterThan32BytesLength = ethUtil.toBuffer(byteArrayShorterThan32Bytes).byteLength;
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expect(byteArrayShorterThan32BytesLength).to.be.lessThan(32);
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const byteArrayLongerThan32BytesLength = ethUtil.toBuffer(byteArrayLongerThan32Bytes).byteLength;
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expect(byteArrayLongerThan32BytesLength).to.be.greaterThan(32);
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const testBytes32Length = ethUtil.toBuffer(testBytes32).byteLength;
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expect(testBytes32Length).to.be.equal(32);
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// Create short test bytes
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shortData = '0xffffaa';
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const encodedShortData = ethUtil.toBuffer(shortData);
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const shortDataLength = new BigNumber(encodedShortData.byteLength);
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const encodedShortDataLength = assetProxyUtils.encodeUint256(shortDataLength);
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shortTestBytesAsBuffer = Buffer.concat([encodedShortDataLength, encodedShortData]);
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shortTestBytes = ethUtil.bufferToHex(shortTestBytesAsBuffer);
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// Create test bytes one word in length
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wordOfData = ethUtil.bufferToHex(assetProxyUtils.encodeUint256(generatePseudoRandomSalt()));
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const encodedWordOfData = ethUtil.toBuffer(wordOfData);
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const wordOfDataLength = new BigNumber(encodedWordOfData.byteLength);
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const encodedWordOfDataLength = assetProxyUtils.encodeUint256(wordOfDataLength);
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wordOfTestBytesAsBuffer = Buffer.concat([encodedWordOfDataLength, encodedWordOfData]);
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wordOfTestBytes = ethUtil.bufferToHex(wordOfTestBytesAsBuffer);
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// Create long test bytes (combines short test bytes with word of test bytes)
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longData = ethUtil.bufferToHex(Buffer.concat([encodedShortData, encodedWordOfData]));
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const longDataLength = new BigNumber(encodedShortData.byteLength + encodedWordOfData.byteLength);
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const encodedLongDataLength = assetProxyUtils.encodeUint256(longDataLength);
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longTestBytesAsBuffer = Buffer.concat([encodedLongDataLength, encodedShortData, encodedWordOfData]);
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longTestBytes = ethUtil.bufferToHex(longTestBytesAsBuffer);
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});
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beforeEach(async () => {
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await blockchainLifecycle.startAsync();
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});
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afterEach(async () => {
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await blockchainLifecycle.revertAsync();
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});
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describe('popByte', () => {
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it('should revert if length is 0', async () => {
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return expectRevertOrOtherErrorAsync(
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libBytes.publicPopByte.callAsync(constants.NULL_BYTES),
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constants.LIB_BYTES_GT_ZERO_LENGTH_REQUIRED,
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);
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});
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it('should pop the last byte from the input and return it', async () => {
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const [newBytes, poppedByte] = await libBytes.publicPopByte.callAsync(byteArrayLongerThan32Bytes);
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const expectedNewBytes = byteArrayLongerThan32Bytes.slice(0, -2);
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const expectedPoppedByte = `0x${byteArrayLongerThan32Bytes.slice(-2)}`;
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expect(newBytes).to.equal(expectedNewBytes);
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expect(poppedByte).to.equal(expectedPoppedByte);
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});
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});
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describe('popAddress', () => {
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it('should revert if length is less than 20', async () => {
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return expectRevertOrOtherErrorAsync(
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libBytes.publicPopAddress.callAsync(byteArrayShorterThan20Bytes),
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constants.LIB_BYTES_GTE_20_LENGTH_REQUIRED,
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);
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});
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it('should pop the last 20 bytes from the input and return it', async () => {
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const [newBytes, poppedAddress] = await libBytes.publicPopAddress.callAsync(byteArrayLongerThan32Bytes);
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const expectedNewBytes = byteArrayLongerThan32Bytes.slice(0, -40);
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const expectedPoppedAddress = `0x${byteArrayLongerThan32Bytes.slice(-40)}`;
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expect(newBytes).to.equal(expectedNewBytes);
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expect(poppedAddress).to.equal(expectedPoppedAddress);
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});
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});
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describe('areBytesEqual', () => {
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it('should return true if byte arrays are equal (both arrays < 32 bytes)', async () => {
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const areBytesEqual = await libBytes.publicAreBytesEqual.callAsync(
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byteArrayShorterThan32Bytes,
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byteArrayShorterThan32Bytes,
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);
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return expect(areBytesEqual).to.be.true();
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});
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it('should return true if byte arrays are equal (both arrays > 32 bytes)', async () => {
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const areBytesEqual = await libBytes.publicAreBytesEqual.callAsync(
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byteArrayLongerThan32Bytes,
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byteArrayLongerThan32Bytes,
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);
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return expect(areBytesEqual).to.be.true();
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});
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it('should return false if byte arrays are not equal (first array < 32 bytes, second array > 32 bytes)', async () => {
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const areBytesEqual = await libBytes.publicAreBytesEqual.callAsync(
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byteArrayShorterThan32Bytes,
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byteArrayLongerThan32Bytes,
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);
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return expect(areBytesEqual).to.be.false();
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});
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it('should return false if byte arrays are not equal (first array > 32 bytes, second array < 32 bytes)', async () => {
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const areBytesEqual = await libBytes.publicAreBytesEqual.callAsync(
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byteArrayLongerThan32Bytes,
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byteArrayShorterThan32Bytes,
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);
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return expect(areBytesEqual).to.be.false();
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});
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it('should return false if byte arrays are not equal (same length, but a byte in first word differs)', async () => {
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const areBytesEqual = await libBytes.publicAreBytesEqual.callAsync(
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byteArrayLongerThan32BytesFirstBytesSwapped,
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byteArrayLongerThan32Bytes,
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);
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return expect(areBytesEqual).to.be.false();
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});
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it('should return false if byte arrays are not equal (same length, but a byte in last word differs)', async () => {
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const areBytesEqual = await libBytes.publicAreBytesEqual.callAsync(
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byteArrayLongerThan32BytesLastBytesSwapped,
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byteArrayLongerThan32Bytes,
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);
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return expect(areBytesEqual).to.be.false();
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});
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});
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describe('readAddress', () => {
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it('should successfully read address when the address takes up the whole array)', async () => {
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const byteArray = ethUtil.addHexPrefix(testAddress);
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const testAddressOffset = new BigNumber(0);
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const address = await libBytes.publicReadAddress.callAsync(byteArray, testAddressOffset);
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return expect(address).to.be.equal(testAddress);
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});
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it('should successfully read address when it is offset in the array)', async () => {
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const addressByteArrayBuffer = ethUtil.toBuffer(testAddress);
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const prefixByteArrayBuffer = ethUtil.toBuffer('0xabcdef');
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const combinedByteArrayBuffer = Buffer.concat([prefixByteArrayBuffer, addressByteArrayBuffer]);
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const combinedByteArray = ethUtil.bufferToHex(combinedByteArrayBuffer);
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const testAddressOffset = new BigNumber(prefixByteArrayBuffer.byteLength);
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const address = await libBytes.publicReadAddress.callAsync(combinedByteArray, testAddressOffset);
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return expect(address).to.be.equal(testAddress);
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});
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it('should fail if the byte array is too short to hold an address)', async () => {
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const shortByteArray = '0xabcdef';
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const offset = new BigNumber(0);
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return expectRevertOrOtherErrorAsync(
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libBytes.publicReadAddress.callAsync(shortByteArray, offset),
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constants.LIB_BYTES_GTE_20_LENGTH_REQUIRED,
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);
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});
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it('should fail if the length between the offset and end of the byte array is too short to hold an address)', async () => {
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const byteArray = ethUtil.addHexPrefix(testAddress);
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const badOffset = new BigNumber(ethUtil.toBuffer(byteArray).byteLength);
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return expectRevertOrOtherErrorAsync(
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libBytes.publicReadAddress.callAsync(byteArray, badOffset),
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constants.LIB_BYTES_GTE_20_LENGTH_REQUIRED,
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);
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});
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});
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/// @TODO Implement test cases for writeAddress. Test template below.
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/// Currently, the generated contract wrappers do not support this library's write methods.
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/*
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describe('writeAddress', () => {
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it('should successfully write address when the address takes up the whole array)', async () => {});
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it('should successfully write address when it is offset in the array)', async () => {});
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it('should fail if the byte array is too short to hold an address)', async () => {});
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it('should fail if the length between the offset and end of the byte array is too short to hold an address)', async () => {});
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});
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*/
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describe('readBytes32', () => {
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it('should successfully read bytes32 when the bytes32 takes up the whole array)', async () => {
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const testBytes32Offset = new BigNumber(0);
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const bytes32 = await libBytes.publicReadBytes32.callAsync(testBytes32, testBytes32Offset);
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return expect(bytes32).to.be.equal(testBytes32);
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});
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it('should successfully read bytes32 when it is offset in the array)', async () => {
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const bytes32ByteArrayBuffer = ethUtil.toBuffer(testBytes32);
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const prefixByteArrayBuffer = ethUtil.toBuffer('0xabcdef');
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const combinedByteArrayBuffer = Buffer.concat([prefixByteArrayBuffer, bytes32ByteArrayBuffer]);
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const combinedByteArray = ethUtil.bufferToHex(combinedByteArrayBuffer);
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const testAddressOffset = new BigNumber(prefixByteArrayBuffer.byteLength);
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const bytes32 = await libBytes.publicReadBytes32.callAsync(combinedByteArray, testAddressOffset);
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return expect(bytes32).to.be.equal(testBytes32);
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});
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it('should fail if the byte array is too short to hold a bytes32)', async () => {
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const offset = new BigNumber(0);
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return expectRevertOrOtherErrorAsync(
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libBytes.publicReadBytes32.callAsync(byteArrayShorterThan32Bytes, offset),
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constants.LIB_BYTES_GTE_32_LENGTH_REQUIRED,
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);
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});
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it('should fail if the length between the offset and end of the byte array is too short to hold a bytes32)', async () => {
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const badOffset = new BigNumber(ethUtil.toBuffer(testBytes32).byteLength);
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return expectRevertOrOtherErrorAsync(
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libBytes.publicReadBytes32.callAsync(testBytes32, badOffset),
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constants.LIB_BYTES_GTE_32_LENGTH_REQUIRED,
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);
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});
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});
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/// @TODO Implement test cases for writeBytes32. Test template below.
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/// Currently, the generated contract wrappers do not support this library's write methods.
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/*
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describe('writeBytes32', () => {
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it('should successfully write bytes32 when the address takes up the whole array)', async () => {});
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it('should successfully write bytes32 when it is offset in the array)', async () => {});
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it('should fail if the byte array is too short to hold a bytes32)', async () => {});
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it('should fail if the length between the offset and end of the byte array is too short to hold a bytes32)', async () => {});
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});
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*/
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describe('readUint256', () => {
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it('should successfully read uint256 when the uint256 takes up the whole array)', async () => {
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const formattedTestUint256 = new BN(testUint256.toString(10));
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const testUint256AsBuffer = ethUtil.toBuffer(formattedTestUint256);
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const byteArray = ethUtil.bufferToHex(testUint256AsBuffer);
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const testUint256Offset = new BigNumber(0);
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const uint256 = await libBytes.publicReadUint256.callAsync(byteArray, testUint256Offset);
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return expect(uint256).to.bignumber.equal(testUint256);
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});
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it('should successfully read uint256 when it is offset in the array)', async () => {
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const prefixByteArrayBuffer = ethUtil.toBuffer('0xabcdef');
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const formattedTestUint256 = new BN(testUint256.toString(10));
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const testUint256AsBuffer = ethUtil.toBuffer(formattedTestUint256);
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const combinedByteArrayBuffer = Buffer.concat([prefixByteArrayBuffer, testUint256AsBuffer]);
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const combinedByteArray = ethUtil.bufferToHex(combinedByteArrayBuffer);
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const testUint256Offset = new BigNumber(prefixByteArrayBuffer.byteLength);
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const uint256 = await libBytes.publicReadUint256.callAsync(combinedByteArray, testUint256Offset);
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return expect(uint256).to.bignumber.equal(testUint256);
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});
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it('should fail if the byte array is too short to hold a uint256)', async () => {
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const offset = new BigNumber(0);
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return expectRevertOrOtherErrorAsync(
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libBytes.publicReadUint256.callAsync(byteArrayShorterThan32Bytes, offset),
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constants.LIB_BYTES_GTE_32_LENGTH_REQUIRED,
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);
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});
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it('should fail if the length between the offset and end of the byte array is too short to hold a uint256)', async () => {
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const formattedTestUint256 = new BN(testUint256.toString(10));
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const testUint256AsBuffer = ethUtil.toBuffer(formattedTestUint256);
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const byteArray = ethUtil.bufferToHex(testUint256AsBuffer);
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const badOffset = new BigNumber(testUint256AsBuffer.byteLength);
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return expectRevertOrOtherErrorAsync(
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libBytes.publicReadUint256.callAsync(byteArray, badOffset),
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constants.LIB_BYTES_GTE_32_LENGTH_REQUIRED,
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);
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});
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});
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/// @TODO Implement test cases for writeUint256. Test template below.
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/// Currently, the generated contract wrappers do not support this library's write methods.
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/*
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describe('writeUint256', () => {
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it('should successfully write uint256 when the address takes up the whole array)', async () => {});
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it('should successfully write uint256 when it is offset in the array)', async () => {});
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it('should fail if the byte array is too short to hold a uint256)', async () => {});
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it('should fail if the length between the offset and end of the byte array is too short to hold a uint256)', async () => {});
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});
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*/
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describe('readFirst4', () => {
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// AssertionError: expected promise to be rejected with an error including 'revert' but it was fulfilled with '0x08c379a0'
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it('should revert if byte array has a length < 4', async () => {
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const byteArrayLessThan4Bytes = '0x010101';
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return expectRevertOrOtherErrorAsync(
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libBytes.publicReadFirst4.callAsync(byteArrayLessThan4Bytes),
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constants.LIB_BYTES_GTE_4_LENGTH_REQUIRED,
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);
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});
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it('should return the first 4 bytes of a byte array of arbitrary length', async () => {
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const first4Bytes = await libBytes.publicReadFirst4.callAsync(byteArrayLongerThan32Bytes);
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const expectedFirst4Bytes = byteArrayLongerThan32Bytes.slice(0, 10);
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expect(first4Bytes).to.equal(expectedFirst4Bytes);
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});
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});
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describe('readBytes', () => {
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it('should successfully read short, nested array of bytes when it takes up the whole array', async () => {
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const testBytesOffset = new BigNumber(0);
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const bytes = await libBytes.publicReadBytes.callAsync(shortTestBytes, testBytesOffset);
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return expect(bytes).to.be.equal(shortData);
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});
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it('should successfully read short, nested array of bytes when it is offset in the array', async () => {
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const prefixByteArrayBuffer = ethUtil.toBuffer('0xabcdef');
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const shortDataAsBuffer = ethUtil.toBuffer(shortData);
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const combinedByteArrayBuffer = Buffer.concat([prefixByteArrayBuffer, shortTestBytesAsBuffer]);
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const combinedByteArray = ethUtil.bufferToHex(combinedByteArrayBuffer);
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const testUint256Offset = new BigNumber(prefixByteArrayBuffer.byteLength);
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const bytes = await libBytes.publicReadBytes.callAsync(combinedByteArray, testUint256Offset);
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return expect(bytes).to.be.equal(shortData);
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});
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it('should successfully read a nested array of bytes - one word in length - when it takes up the whole array', async () => {
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const testBytesOffset = new BigNumber(0);
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const bytes = await libBytes.publicReadBytes.callAsync(wordOfTestBytes, testBytesOffset);
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return expect(bytes).to.be.equal(wordOfData);
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});
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it('should successfully read a nested array of bytes - one word in length - when it is offset in the array', async () => {
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const prefixByteArrayBuffer = ethUtil.toBuffer('0xabcdef');
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const wordOfDataAsBuffer = ethUtil.toBuffer(wordOfData);
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const combinedByteArrayBuffer = Buffer.concat([prefixByteArrayBuffer, wordOfTestBytesAsBuffer]);
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const combinedByteArray = ethUtil.bufferToHex(combinedByteArrayBuffer);
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const testUint256Offset = new BigNumber(prefixByteArrayBuffer.byteLength);
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const bytes = await libBytes.publicReadBytes.callAsync(combinedByteArray, testUint256Offset);
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return expect(bytes).to.be.equal(wordOfData);
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});
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it('should successfully read long, nested array of bytes when it takes up the whole array', async () => {
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const testBytesOffset = new BigNumber(0);
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const bytes = await libBytes.publicReadBytes.callAsync(longTestBytes, testBytesOffset);
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return expect(bytes).to.be.equal(longData);
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});
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it('should successfully read long, nested array of bytes when it is offset in the array', async () => {
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const prefixByteArrayBuffer = ethUtil.toBuffer('0xabcdef');
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const longDataAsBuffer = ethUtil.toBuffer(longData);
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const combinedByteArrayBuffer = Buffer.concat([prefixByteArrayBuffer, longTestBytesAsBuffer]);
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const combinedByteArray = ethUtil.bufferToHex(combinedByteArrayBuffer);
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const testUint256Offset = new BigNumber(prefixByteArrayBuffer.byteLength);
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const bytes = await libBytes.publicReadBytes.callAsync(combinedByteArray, testUint256Offset);
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return expect(bytes).to.be.equal(longData);
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});
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it('should fail if the byte array is too short to hold the length of a nested byte array)', async () => {
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// The length of the nested array is 32 bytes. By storing less than 32 bytes, a length cannot be read.
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const offset = new BigNumber(0);
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return expect(libBytes.publicReadBytes.callAsync(byteArrayShorterThan32Bytes, offset)).to.be.rejectedWith(
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constants.REVERT,
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);
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});
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it('should fail if we store a nested byte array length, without a nested byte array)', async () => {
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const offset = new BigNumber(0);
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return expect(libBytes.publicReadBytes.callAsync(testBytes32, offset)).to.be.rejectedWith(constants.REVERT);
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});
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it('should fail if the length between the offset and end of the byte array is too short to hold the length of a nested byte array)', async () => {
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const badOffset = new BigNumber(ethUtil.toBuffer(byteArrayShorterThan32Bytes).byteLength);
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return expect(
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libBytes.publicReadBytes.callAsync(byteArrayShorterThan32Bytes, badOffset),
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).to.be.rejectedWith(constants.REVERT);
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});
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it('should fail if the length between the offset and end of the byte array is too short to hold the nested byte array)', async () => {
|
|
const badOffset = new BigNumber(ethUtil.toBuffer(testBytes32).byteLength);
|
|
return expect(libBytes.publicReadBytes.callAsync(testBytes32, badOffset)).to.be.rejectedWith(
|
|
constants.REVERT,
|
|
);
|
|
});
|
|
});
|
|
|
|
describe('writeBytes', () => {
|
|
it('should successfully write short, nested array of bytes when it takes up the whole array)', async () => {
|
|
const testBytesOffset = new BigNumber(0);
|
|
const emptyByteArray = ethUtil.bufferToHex(new Buffer(shortTestBytesAsBuffer.byteLength));
|
|
const bytesWritten = await libBytes.publicWriteBytes.callAsync(emptyByteArray, testBytesOffset, shortData);
|
|
const bytesRead = await libBytes.publicReadBytes.callAsync(bytesWritten, testBytesOffset);
|
|
return expect(bytesRead).to.be.equal(shortData);
|
|
});
|
|
|
|
it('should successfully write short, nested array of bytes when it is offset in the array', async () => {
|
|
// Write a prefix to the array
|
|
const prefixData = '0xabcdef';
|
|
const prefixDataAsBuffer = ethUtil.toBuffer(prefixData);
|
|
const prefixOffset = new BigNumber(0);
|
|
const emptyByteArray = ethUtil.bufferToHex(
|
|
new Buffer(prefixDataAsBuffer.byteLength + shortTestBytesAsBuffer.byteLength),
|
|
);
|
|
let bytesWritten = await libBytes.publicWriteBytes.callAsync(emptyByteArray, prefixOffset, prefixData);
|
|
// Write data after prefix
|
|
const testBytesOffset = new BigNumber(prefixDataAsBuffer.byteLength);
|
|
bytesWritten = await libBytes.publicWriteBytes.callAsync(bytesWritten, testBytesOffset, shortData);
|
|
// Read data after prefix and validate
|
|
const bytes = await libBytes.publicReadBytes.callAsync(bytesWritten, testBytesOffset);
|
|
return expect(bytes).to.be.equal(shortData);
|
|
});
|
|
|
|
it('should successfully write a nested array of bytes - one word in length - when it takes up the whole array)', async () => {
|
|
const testBytesOffset = new BigNumber(0);
|
|
const emptyByteArray = ethUtil.bufferToHex(new Buffer(wordOfTestBytesAsBuffer.byteLength));
|
|
const bytesWritten = await libBytes.publicWriteBytes.callAsync(emptyByteArray, testBytesOffset, wordOfData);
|
|
const bytesRead = await libBytes.publicReadBytes.callAsync(bytesWritten, testBytesOffset);
|
|
return expect(bytesRead).to.be.equal(wordOfData);
|
|
});
|
|
|
|
it('should successfully write a nested array of bytes - one word in length - when it is offset in the array', async () => {
|
|
// Write a prefix to the array
|
|
const prefixData = '0xabcdef';
|
|
const prefixDataAsBuffer = ethUtil.toBuffer(prefixData);
|
|
const prefixOffset = new BigNumber(0);
|
|
const emptyByteArray = ethUtil.bufferToHex(
|
|
new Buffer(prefixDataAsBuffer.byteLength + wordOfTestBytesAsBuffer.byteLength),
|
|
);
|
|
let bytesWritten = await libBytes.publicWriteBytes.callAsync(emptyByteArray, prefixOffset, prefixData);
|
|
// Write data after prefix
|
|
const testBytesOffset = new BigNumber(prefixDataAsBuffer.byteLength);
|
|
bytesWritten = await libBytes.publicWriteBytes.callAsync(bytesWritten, testBytesOffset, wordOfData);
|
|
// Read data after prefix and validate
|
|
const bytes = await libBytes.publicReadBytes.callAsync(bytesWritten, testBytesOffset);
|
|
return expect(bytes).to.be.equal(wordOfData);
|
|
});
|
|
|
|
it('should successfully write a long, nested bytes when it takes up the whole array)', async () => {
|
|
const testBytesOffset = new BigNumber(0);
|
|
const emptyByteArray = ethUtil.bufferToHex(new Buffer(longTestBytesAsBuffer.byteLength));
|
|
const bytesWritten = await libBytes.publicWriteBytes.callAsync(emptyByteArray, testBytesOffset, longData);
|
|
const bytesRead = await libBytes.publicReadBytes.callAsync(bytesWritten, testBytesOffset);
|
|
return expect(bytesRead).to.be.equal(longData);
|
|
});
|
|
|
|
it('should successfully write long, nested array of bytes when it is offset in the array', async () => {
|
|
// Write a prefix to the array
|
|
const prefixData = '0xabcdef';
|
|
const prefixDataAsBuffer = ethUtil.toBuffer(prefixData);
|
|
const prefixOffset = new BigNumber(0);
|
|
const emptyByteArray = ethUtil.bufferToHex(
|
|
new Buffer(prefixDataAsBuffer.byteLength + longTestBytesAsBuffer.byteLength),
|
|
);
|
|
let bytesWritten = await libBytes.publicWriteBytes.callAsync(emptyByteArray, prefixOffset, prefixData);
|
|
// Write data after prefix
|
|
const testBytesOffset = new BigNumber(prefixDataAsBuffer.byteLength);
|
|
bytesWritten = await libBytes.publicWriteBytes.callAsync(bytesWritten, testBytesOffset, longData);
|
|
// Read data after prefix and validate
|
|
const bytes = await libBytes.publicReadBytes.callAsync(bytesWritten, testBytesOffset);
|
|
return expect(bytes).to.be.equal(longData);
|
|
});
|
|
|
|
it('should fail if the byte array is too short to hold the length of a nested byte array)', async () => {
|
|
const offset = new BigNumber(0);
|
|
const emptyByteArray = ethUtil.bufferToHex(new Buffer(1));
|
|
return expect(libBytes.publicWriteBytes.callAsync(emptyByteArray, offset, longData)).to.be.rejectedWith(
|
|
constants.REVERT,
|
|
);
|
|
});
|
|
|
|
it('should fail if the length between the offset and end of the byte array is too short to hold the length of a nested byte array)', async () => {
|
|
const emptyByteArray = ethUtil.bufferToHex(new Buffer(shortTestBytesAsBuffer.byteLength));
|
|
const badOffset = new BigNumber(ethUtil.toBuffer(shortTestBytesAsBuffer).byteLength);
|
|
return expect(libBytes.publicWriteBytes.callAsync(emptyByteArray, badOffset, shortData)).to.be.rejectedWith(
|
|
constants.REVERT,
|
|
);
|
|
});
|
|
});
|
|
});
|