876 lines
46 KiB
TypeScript
876 lines
46 KiB
TypeScript
import {
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chaiSetup,
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constants,
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expectContractCallFailedAsync,
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provider,
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txDefaults,
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typeEncodingUtils,
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web3Wrapper,
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} from '@0x/contracts-test-utils';
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import { BlockchainLifecycle } from '@0x/dev-utils';
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import { generatePseudoRandomSalt } from '@0x/order-utils';
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import { RevertReason } from '@0x/types';
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import { BigNumber } from '@0x/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 * as _ from 'lodash';
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import { TestLibBytesContract } from '../generated-wrappers/test_lib_bytes';
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import { artifacts } from '../src';
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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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// BUG: Ideally we would use Buffer.from(memory).toString('hex')
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// https://github.com/Microsoft/TypeScript/issues/23155
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const toHex = (buf: Uint8Array): string => buf.reduce((a, v) => a + `00${v.toString(16)}`.slice(-2), '0x');
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const fromHex = (str: string): Uint8Array => Uint8Array.from(Buffer.from(str.slice(2), 'hex'));
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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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let testAddressB: string;
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const testBytes32 = '0x102030405060708090a0b0c0d0e0f0102030405060708090a0b0c0d0e0f01020';
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const testBytes32B = '0x534877abd8443578526845cdfef020047528759477fedef87346527659aced32';
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const testUint256 = new BigNumber(testBytes32, 16);
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const testUint256B = new BigNumber(testBytes32B, 16);
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const testBytes4 = '0xabcdef12';
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const testByte = '0xab';
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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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testAddressB = accounts[2];
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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 = typeEncodingUtils.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(typeEncodingUtils.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 = typeEncodingUtils.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 = typeEncodingUtils.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('popLastByte', () => {
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it('should revert if length is 0', async () => {
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return expectContractCallFailedAsync(
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libBytes.publicPopLastByte.callAsync(constants.NULL_BYTES),
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RevertReason.LibBytesGreaterThanZeroLengthRequired,
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);
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});
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it('should pop the last byte from the input and return it when array holds more than 1 byte', async () => {
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const [newBytes, poppedByte] = await libBytes.publicPopLastByte.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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it('should pop the last byte from the input and return it when array is exactly 1 byte', async () => {
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const [newBytes, poppedByte] = await libBytes.publicPopLastByte.callAsync(testByte);
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const expectedNewBytes = '0x';
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expect(newBytes).to.equal(expectedNewBytes);
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return expect(poppedByte).to.be.equal(testByte);
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});
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});
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describe('popLast20Bytes', () => {
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it('should revert if length is less than 20', async () => {
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return expectContractCallFailedAsync(
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libBytes.publicPopLast20Bytes.callAsync(byteArrayShorterThan20Bytes),
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RevertReason.LibBytesGreaterOrEqualTo20LengthRequired,
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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 when array holds more than 20 bytes', async () => {
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const [newBytes, poppedAddress] = await libBytes.publicPopLast20Bytes.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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it('should pop the last 20 bytes from the input and return it when array is exactly 20 bytes', async () => {
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const [newBytes, poppedAddress] = await libBytes.publicPopLast20Bytes.callAsync(testAddress);
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const expectedNewBytes = '0x';
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const expectedPoppedAddress = testAddress;
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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('equals', () => {
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it('should return true if byte arrays are equal (both arrays < 32 bytes)', async () => {
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const isEqual = await libBytes.publicEquals.callAsync(
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byteArrayShorterThan32Bytes,
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byteArrayShorterThan32Bytes,
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);
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return expect(isEqual).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 isEqual = await libBytes.publicEquals.callAsync(
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byteArrayLongerThan32Bytes,
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byteArrayLongerThan32Bytes,
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);
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return expect(isEqual).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 isEqual = await libBytes.publicEquals.callAsync(
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byteArrayShorterThan32Bytes,
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byteArrayLongerThan32Bytes,
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);
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return expect(isEqual).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 isEqual = await libBytes.publicEquals.callAsync(
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byteArrayLongerThan32Bytes,
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byteArrayShorterThan32Bytes,
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);
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return expect(isEqual).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 isEqual = await libBytes.publicEquals.callAsync(
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byteArrayLongerThan32BytesFirstBytesSwapped,
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byteArrayLongerThan32Bytes,
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);
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return expect(isEqual).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 isEqual = await libBytes.publicEquals.callAsync(
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byteArrayLongerThan32BytesLastBytesSwapped,
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byteArrayLongerThan32Bytes,
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);
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return expect(isEqual).to.be.false();
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});
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describe('should ignore trailing data', () => {
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it('should return true when both < 32 bytes', async () => {
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const isEqual = await libBytes.publicEqualsPop1.callAsync('0x0102', '0x0103');
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return expect(isEqual).to.be.true();
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});
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});
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});
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describe('deepCopyBytes', () => {
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it('should revert if dest is shorter than source', async () => {
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return expectContractCallFailedAsync(
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libBytes.publicDeepCopyBytes.callAsync(byteArrayShorterThan32Bytes, byteArrayLongerThan32Bytes),
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RevertReason.LibBytesGreaterOrEqualToSourceBytesLengthRequired,
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);
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});
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it('should overwrite dest with source if source and dest have equal length', async () => {
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const zeroedByteArrayLongerThan32Bytes = `0x${_.repeat('0', byteArrayLongerThan32Bytes.length - 2)}`;
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const zeroedBytesAfterCopy = await libBytes.publicDeepCopyBytes.callAsync(
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zeroedByteArrayLongerThan32Bytes,
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byteArrayLongerThan32Bytes,
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);
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return expect(zeroedBytesAfterCopy).to.be.equal(byteArrayLongerThan32Bytes);
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});
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it('should overwrite the leftmost len(source) bytes of dest if dest is larger than source', async () => {
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const zeroedByteArrayLongerThan32Bytes = `0x${_.repeat('0', byteArrayLongerThan32Bytes.length * 2)}`;
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const zeroedBytesAfterCopy = await libBytes.publicDeepCopyBytes.callAsync(
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zeroedByteArrayLongerThan32Bytes,
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byteArrayLongerThan32Bytes,
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);
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const copiedBytes = zeroedBytesAfterCopy.slice(0, byteArrayLongerThan32Bytes.length);
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return expect(copiedBytes).to.be.equal(byteArrayLongerThan32Bytes);
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});
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it('should not overwrite the rightmost bytes of dest if dest is larger than source', async () => {
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const zeroedByteArrayLongerThan32Bytes = `0x${_.repeat('0', byteArrayLongerThan32Bytes.length * 2)}`;
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const zeroedBytesAfterCopy = await libBytes.publicDeepCopyBytes.callAsync(
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zeroedByteArrayLongerThan32Bytes,
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byteArrayLongerThan32Bytes,
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);
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const expectedNotCopiedBytes = zeroedByteArrayLongerThan32Bytes.slice(byteArrayLongerThan32Bytes.length);
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const notCopiedBytes = zeroedBytesAfterCopy.slice(byteArrayLongerThan32Bytes.length);
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return expect(notCopiedBytes).to.be.equal(expectedNotCopiedBytes);
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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 expectContractCallFailedAsync(
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libBytes.publicReadAddress.callAsync(shortByteArray, offset),
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RevertReason.LibBytesGreaterOrEqualTo20LengthRequired,
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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 = testAddress;
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const badOffset = new BigNumber(ethUtil.toBuffer(byteArray).byteLength);
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return expectContractCallFailedAsync(
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libBytes.publicReadAddress.callAsync(byteArray, badOffset),
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RevertReason.LibBytesGreaterOrEqualTo20LengthRequired,
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);
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});
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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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const byteArray = testAddress;
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const testAddressOffset = new BigNumber(0);
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const newByteArray = await libBytes.publicWriteAddress.callAsync(
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byteArray,
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testAddressOffset,
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testAddressB,
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);
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return expect(newByteArray).to.be.equal(testAddressB);
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});
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it('should successfully write 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 newByteArray = await libBytes.publicWriteAddress.callAsync(
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combinedByteArray,
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testAddressOffset,
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testAddressB,
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);
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const newByteArrayBuffer = ethUtil.toBuffer(newByteArray);
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const addressFromOffsetBuffer = newByteArrayBuffer.slice(prefixByteArrayBuffer.byteLength);
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const addressFromOffset = ethUtil.addHexPrefix(ethUtil.bufferToHex(addressFromOffsetBuffer));
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return expect(addressFromOffset).to.be.equal(testAddressB);
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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 offset = new BigNumber(0);
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return expectContractCallFailedAsync(
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libBytes.publicWriteAddress.callAsync(byteArrayShorterThan20Bytes, offset, testAddress),
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RevertReason.LibBytesGreaterOrEqualTo20LengthRequired,
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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 = byteArrayLongerThan32Bytes;
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const badOffset = new BigNumber(ethUtil.toBuffer(byteArray).byteLength);
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return expectContractCallFailedAsync(
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libBytes.publicWriteAddress.callAsync(byteArray, badOffset, testAddress),
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RevertReason.LibBytesGreaterOrEqualTo20LengthRequired,
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);
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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 testBytes32Offset = new BigNumber(prefixByteArrayBuffer.byteLength);
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const bytes32 = await libBytes.publicReadBytes32.callAsync(combinedByteArray, testBytes32Offset);
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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 expectContractCallFailedAsync(
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libBytes.publicReadBytes32.callAsync(byteArrayShorterThan32Bytes, offset),
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RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
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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 expectContractCallFailedAsync(
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libBytes.publicReadBytes32.callAsync(testBytes32, badOffset),
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RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
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);
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});
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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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const byteArray = testBytes32;
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const testBytes32Offset = new BigNumber(0);
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const newByteArray = await libBytes.publicWriteBytes32.callAsync(
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byteArray,
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testBytes32Offset,
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testBytes32B,
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);
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return expect(newByteArray).to.be.equal(testBytes32B);
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});
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it('should successfully write 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 testBytes32Offset = new BigNumber(prefixByteArrayBuffer.byteLength);
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const newByteArray = await libBytes.publicWriteBytes32.callAsync(
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combinedByteArray,
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testBytes32Offset,
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testBytes32B,
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);
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const newByteArrayBuffer = ethUtil.toBuffer(newByteArray);
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const bytes32FromOffsetBuffer = newByteArrayBuffer.slice(prefixByteArrayBuffer.byteLength);
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const bytes32FromOffset = ethUtil.addHexPrefix(ethUtil.bufferToHex(bytes32FromOffsetBuffer));
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return expect(bytes32FromOffset).to.be.equal(testBytes32B);
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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 expectContractCallFailedAsync(
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libBytes.publicWriteBytes32.callAsync(byteArrayShorterThan32Bytes, offset, testBytes32),
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RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
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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 byteArray = byteArrayLongerThan32Bytes;
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const badOffset = new BigNumber(ethUtil.toBuffer(byteArray).byteLength);
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return expectContractCallFailedAsync(
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libBytes.publicWriteBytes32.callAsync(byteArray, badOffset, testBytes32),
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RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
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);
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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);
|
|
const combinedByteArrayBuffer = Buffer.concat([prefixByteArrayBuffer, testUint256AsBuffer]);
|
|
const combinedByteArray = ethUtil.bufferToHex(combinedByteArrayBuffer);
|
|
const testUint256Offset = new BigNumber(prefixByteArrayBuffer.byteLength);
|
|
const uint256 = await libBytes.publicReadUint256.callAsync(combinedByteArray, testUint256Offset);
|
|
return expect(uint256).to.bignumber.equal(testUint256);
|
|
});
|
|
it('should fail if the byte array is too short to hold a uint256', async () => {
|
|
const offset = new BigNumber(0);
|
|
return expectContractCallFailedAsync(
|
|
libBytes.publicReadUint256.callAsync(byteArrayShorterThan32Bytes, offset),
|
|
RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
|
|
);
|
|
});
|
|
it('should fail if the length between the offset and end of the byte array is too short to hold a uint256', async () => {
|
|
const formattedTestUint256 = new BN(testUint256.toString(10));
|
|
const testUint256AsBuffer = ethUtil.toBuffer(formattedTestUint256);
|
|
const byteArray = ethUtil.bufferToHex(testUint256AsBuffer);
|
|
const badOffset = new BigNumber(testUint256AsBuffer.byteLength);
|
|
return expectContractCallFailedAsync(
|
|
libBytes.publicReadUint256.callAsync(byteArray, badOffset),
|
|
RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
|
|
);
|
|
});
|
|
});
|
|
|
|
describe('writeUint256', () => {
|
|
it('should successfully write uint256 when the address takes up the whole array', async () => {
|
|
const byteArray = testBytes32;
|
|
const testUint256Offset = new BigNumber(0);
|
|
const newByteArray = await libBytes.publicWriteUint256.callAsync(
|
|
byteArray,
|
|
testUint256Offset,
|
|
testUint256B,
|
|
);
|
|
const newByteArrayAsUint256 = new BigNumber(newByteArray, 16);
|
|
return expect(newByteArrayAsUint256).to.be.bignumber.equal(testUint256B);
|
|
});
|
|
it('should successfully write uint256 when it is offset in the array', async () => {
|
|
const bytes32ByteArrayBuffer = ethUtil.toBuffer(testBytes32);
|
|
const prefixByteArrayBuffer = ethUtil.toBuffer('0xabcdef');
|
|
const combinedByteArrayBuffer = Buffer.concat([prefixByteArrayBuffer, bytes32ByteArrayBuffer]);
|
|
const combinedByteArray = ethUtil.bufferToHex(combinedByteArrayBuffer);
|
|
const testUint256Offset = new BigNumber(prefixByteArrayBuffer.byteLength);
|
|
const newByteArray = await libBytes.publicWriteUint256.callAsync(
|
|
combinedByteArray,
|
|
testUint256Offset,
|
|
testUint256B,
|
|
);
|
|
const newByteArrayBuffer = ethUtil.toBuffer(newByteArray);
|
|
const uint256FromOffsetBuffer = newByteArrayBuffer.slice(prefixByteArrayBuffer.byteLength);
|
|
const uint256FromOffset = new BigNumber(
|
|
ethUtil.addHexPrefix(ethUtil.bufferToHex(uint256FromOffsetBuffer)),
|
|
16,
|
|
);
|
|
return expect(uint256FromOffset).to.be.bignumber.equal(testUint256B);
|
|
});
|
|
it('should fail if the byte array is too short to hold a uint256', async () => {
|
|
const offset = new BigNumber(0);
|
|
return expectContractCallFailedAsync(
|
|
libBytes.publicWriteUint256.callAsync(byteArrayShorterThan32Bytes, offset, testUint256),
|
|
RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
|
|
);
|
|
});
|
|
it('should fail if the length between the offset and end of the byte array is too short to hold a uint256', async () => {
|
|
const byteArray = byteArrayLongerThan32Bytes;
|
|
const badOffset = new BigNumber(ethUtil.toBuffer(byteArray).byteLength);
|
|
return expectContractCallFailedAsync(
|
|
libBytes.publicWriteUint256.callAsync(byteArray, badOffset, testUint256),
|
|
RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
|
|
);
|
|
});
|
|
});
|
|
|
|
describe('readBytes4', () => {
|
|
// AssertionError: expected promise to be rejected with an error including 'revert' but it was fulfilled with '0x08c379a0'
|
|
it('should revert if byte array has a length < 4', async () => {
|
|
const byteArrayLessThan4Bytes = '0x010101';
|
|
const offset = new BigNumber(0);
|
|
return expectContractCallFailedAsync(
|
|
libBytes.publicReadBytes4.callAsync(byteArrayLessThan4Bytes, offset),
|
|
RevertReason.LibBytesGreaterOrEqualTo4LengthRequired,
|
|
);
|
|
});
|
|
it('should return the first 4 bytes of a byte array of arbitrary length', async () => {
|
|
const first4Bytes = await libBytes.publicReadBytes4.callAsync(byteArrayLongerThan32Bytes, new BigNumber(0));
|
|
const expectedFirst4Bytes = byteArrayLongerThan32Bytes.slice(0, 10);
|
|
expect(first4Bytes).to.equal(expectedFirst4Bytes);
|
|
});
|
|
it('should successfully read bytes4 when the bytes4 takes up the whole array', async () => {
|
|
const testBytes4Offset = new BigNumber(0);
|
|
const bytes4 = await libBytes.publicReadBytes4.callAsync(testBytes4, testBytes4Offset);
|
|
return expect(bytes4).to.be.equal(testBytes4);
|
|
});
|
|
it('should successfully read bytes4 when it is offset in the array', async () => {
|
|
const bytes4ByteArrayBuffer = ethUtil.toBuffer(testBytes4);
|
|
const prefixByteArrayBuffer = ethUtil.toBuffer('0xabcdef');
|
|
const combinedByteArrayBuffer = Buffer.concat([prefixByteArrayBuffer, bytes4ByteArrayBuffer]);
|
|
const combinedByteArray = ethUtil.bufferToHex(combinedByteArrayBuffer);
|
|
const testBytes4Offset = new BigNumber(prefixByteArrayBuffer.byteLength);
|
|
const bytes4 = await libBytes.publicReadBytes4.callAsync(combinedByteArray, testBytes4Offset);
|
|
return expect(bytes4).to.be.equal(testBytes4);
|
|
});
|
|
it('should fail if the length between the offset and end of the byte array is too short to hold a bytes4', async () => {
|
|
const badOffset = new BigNumber(ethUtil.toBuffer(testBytes4).byteLength);
|
|
return expectContractCallFailedAsync(
|
|
libBytes.publicReadBytes4.callAsync(testBytes4, badOffset),
|
|
RevertReason.LibBytesGreaterOrEqualTo4LengthRequired,
|
|
);
|
|
});
|
|
});
|
|
|
|
describe('readBytesWithLength', () => {
|
|
it('should successfully read short, nested array of bytes when it takes up the whole array', async () => {
|
|
const testBytesOffset = new BigNumber(0);
|
|
const bytes = await libBytes.publicReadBytesWithLength.callAsync(shortTestBytes, testBytesOffset);
|
|
return expect(bytes).to.be.equal(shortData);
|
|
});
|
|
it('should successfully read short, nested array of bytes when it is offset in the array', async () => {
|
|
const prefixByteArrayBuffer = ethUtil.toBuffer('0xabcdef');
|
|
const combinedByteArrayBuffer = Buffer.concat([prefixByteArrayBuffer, shortTestBytesAsBuffer]);
|
|
const combinedByteArray = ethUtil.bufferToHex(combinedByteArrayBuffer);
|
|
const testUint256Offset = new BigNumber(prefixByteArrayBuffer.byteLength);
|
|
const bytes = await libBytes.publicReadBytesWithLength.callAsync(combinedByteArray, testUint256Offset);
|
|
return expect(bytes).to.be.equal(shortData);
|
|
});
|
|
it('should successfully read a nested array of bytes - one word in length - when it takes up the whole array', async () => {
|
|
const testBytesOffset = new BigNumber(0);
|
|
const bytes = await libBytes.publicReadBytesWithLength.callAsync(wordOfTestBytes, testBytesOffset);
|
|
return expect(bytes).to.be.equal(wordOfData);
|
|
});
|
|
it('should successfully read a nested array of bytes - one word in length - when it is offset in the array', async () => {
|
|
const prefixByteArrayBuffer = ethUtil.toBuffer('0xabcdef');
|
|
const combinedByteArrayBuffer = Buffer.concat([prefixByteArrayBuffer, wordOfTestBytesAsBuffer]);
|
|
const combinedByteArray = ethUtil.bufferToHex(combinedByteArrayBuffer);
|
|
const testUint256Offset = new BigNumber(prefixByteArrayBuffer.byteLength);
|
|
const bytes = await libBytes.publicReadBytesWithLength.callAsync(combinedByteArray, testUint256Offset);
|
|
return expect(bytes).to.be.equal(wordOfData);
|
|
});
|
|
it('should successfully read long, nested array of bytes when it takes up the whole array', async () => {
|
|
const testBytesOffset = new BigNumber(0);
|
|
const bytes = await libBytes.publicReadBytesWithLength.callAsync(longTestBytes, testBytesOffset);
|
|
return expect(bytes).to.be.equal(longData);
|
|
});
|
|
it('should successfully read long, nested array of bytes when it is offset in the array', async () => {
|
|
const prefixByteArrayBuffer = ethUtil.toBuffer('0xabcdef');
|
|
const combinedByteArrayBuffer = Buffer.concat([prefixByteArrayBuffer, longTestBytesAsBuffer]);
|
|
const combinedByteArray = ethUtil.bufferToHex(combinedByteArrayBuffer);
|
|
const testUint256Offset = new BigNumber(prefixByteArrayBuffer.byteLength);
|
|
const bytes = await libBytes.publicReadBytesWithLength.callAsync(combinedByteArray, testUint256Offset);
|
|
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 () => {
|
|
// The length of the nested array is 32 bytes. By storing less than 32 bytes, a length cannot be read.
|
|
const offset = new BigNumber(0);
|
|
return expectContractCallFailedAsync(
|
|
libBytes.publicReadBytesWithLength.callAsync(byteArrayShorterThan32Bytes, offset),
|
|
RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
|
|
);
|
|
});
|
|
it('should fail if we store a nested byte array length, without a nested byte array', async () => {
|
|
const offset = new BigNumber(0);
|
|
return expectContractCallFailedAsync(
|
|
libBytes.publicReadBytesWithLength.callAsync(testBytes32, offset),
|
|
RevertReason.LibBytesGreaterOrEqualToNestedBytesLengthRequired,
|
|
);
|
|
});
|
|
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 badOffset = new BigNumber(ethUtil.toBuffer(byteArrayShorterThan32Bytes).byteLength);
|
|
return expectContractCallFailedAsync(
|
|
libBytes.publicReadBytesWithLength.callAsync(byteArrayShorterThan32Bytes, badOffset),
|
|
RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
|
|
);
|
|
});
|
|
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 expectContractCallFailedAsync(
|
|
libBytes.publicReadBytesWithLength.callAsync(testBytes32, badOffset),
|
|
RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
|
|
);
|
|
});
|
|
});
|
|
|
|
describe('writeBytesWithLength', () => {
|
|
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.publicWriteBytesWithLength.callAsync(
|
|
emptyByteArray,
|
|
testBytesOffset,
|
|
shortData,
|
|
);
|
|
const bytesRead = await libBytes.publicReadBytesWithLength.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.publicWriteBytesWithLength.callAsync(
|
|
emptyByteArray,
|
|
prefixOffset,
|
|
prefixData,
|
|
);
|
|
// Write data after prefix
|
|
const testBytesOffset = new BigNumber(prefixDataAsBuffer.byteLength);
|
|
bytesWritten = await libBytes.publicWriteBytesWithLength.callAsync(
|
|
bytesWritten,
|
|
testBytesOffset,
|
|
shortData,
|
|
);
|
|
// Read data after prefix and validate
|
|
const bytes = await libBytes.publicReadBytesWithLength.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.publicWriteBytesWithLength.callAsync(
|
|
emptyByteArray,
|
|
testBytesOffset,
|
|
wordOfData,
|
|
);
|
|
const bytesRead = await libBytes.publicReadBytesWithLength.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.publicWriteBytesWithLength.callAsync(
|
|
emptyByteArray,
|
|
prefixOffset,
|
|
prefixData,
|
|
);
|
|
// Write data after prefix
|
|
const testBytesOffset = new BigNumber(prefixDataAsBuffer.byteLength);
|
|
bytesWritten = await libBytes.publicWriteBytesWithLength.callAsync(
|
|
bytesWritten,
|
|
testBytesOffset,
|
|
wordOfData,
|
|
);
|
|
// Read data after prefix and validate
|
|
const bytes = await libBytes.publicReadBytesWithLength.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.publicWriteBytesWithLength.callAsync(
|
|
emptyByteArray,
|
|
testBytesOffset,
|
|
longData,
|
|
);
|
|
const bytesRead = await libBytes.publicReadBytesWithLength.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.publicWriteBytesWithLength.callAsync(
|
|
emptyByteArray,
|
|
prefixOffset,
|
|
prefixData,
|
|
);
|
|
// Write data after prefix
|
|
const testBytesOffset = new BigNumber(prefixDataAsBuffer.byteLength);
|
|
bytesWritten = await libBytes.publicWriteBytesWithLength.callAsync(bytesWritten, testBytesOffset, longData);
|
|
// Read data after prefix and validate
|
|
const bytes = await libBytes.publicReadBytesWithLength.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 expectContractCallFailedAsync(
|
|
libBytes.publicWriteBytesWithLength.callAsync(emptyByteArray, offset, longData),
|
|
RevertReason.LibBytesGreaterOrEqualToNestedBytesLengthRequired,
|
|
);
|
|
});
|
|
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 expectContractCallFailedAsync(
|
|
libBytes.publicWriteBytesWithLength.callAsync(emptyByteArray, badOffset, shortData),
|
|
RevertReason.LibBytesGreaterOrEqualToNestedBytesLengthRequired,
|
|
);
|
|
});
|
|
});
|
|
|
|
describe('memCopy', () => {
|
|
// Create memory 0x000102...FF
|
|
const memSize = 256;
|
|
// tslint:disable:no-shadowed-variable
|
|
const memory = new Uint8Array(memSize).map((_, i) => i);
|
|
const memHex = toHex(memory);
|
|
|
|
// Reference implementation to test against
|
|
const refMemcpy = (mem: Uint8Array, dest: number, source: number, length: number): Uint8Array =>
|
|
Uint8Array.from(mem).copyWithin(dest, source, source + length);
|
|
|
|
// Test vectors: destination, source, length, job description
|
|
type Tests = Array<[number, number, number, string]>;
|
|
|
|
const test = (tests: Tests) =>
|
|
tests.forEach(([dest, source, length, job]) =>
|
|
it(job, async () => {
|
|
const expected = refMemcpy(memory, dest, source, length);
|
|
const resultStr = await libBytes.testMemcpy.callAsync(
|
|
memHex,
|
|
new BigNumber(dest),
|
|
new BigNumber(source),
|
|
new BigNumber(length),
|
|
);
|
|
const result = fromHex(resultStr);
|
|
expect(result).to.deep.equal(expected);
|
|
}),
|
|
);
|
|
|
|
test([[0, 0, 0, 'copies zero bytes with overlap']]);
|
|
|
|
describe('copies forward', () =>
|
|
test([
|
|
[128, 0, 0, 'zero bytes'],
|
|
[128, 0, 1, 'one byte'],
|
|
[128, 0, 11, 'eleven bytes'],
|
|
[128, 0, 31, 'thirty-one bytes'],
|
|
[128, 0, 32, 'one word'],
|
|
[128, 0, 64, 'two words'],
|
|
[128, 0, 96, 'three words'],
|
|
[128, 0, 33, 'one word and one byte'],
|
|
[128, 0, 72, 'two words and eight bytes'],
|
|
[128, 0, 100, 'three words and four bytes'],
|
|
]));
|
|
|
|
describe('copies forward within one word', () =>
|
|
test([
|
|
[16, 0, 0, 'zero bytes'],
|
|
[16, 0, 1, 'one byte'],
|
|
[16, 0, 11, 'eleven bytes'],
|
|
[16, 0, 16, 'sixteen bytes'],
|
|
]));
|
|
|
|
describe('copies forward with one byte overlap', () =>
|
|
test([
|
|
[0, 0, 1, 'one byte'],
|
|
[10, 0, 11, 'eleven bytes'],
|
|
[30, 0, 31, 'thirty-one bytes'],
|
|
[31, 0, 32, 'one word'],
|
|
[32, 0, 33, 'one word and one byte'],
|
|
[71, 0, 72, 'two words and eight bytes'],
|
|
[99, 0, 100, 'three words and four bytes'],
|
|
]));
|
|
|
|
describe('copies forward with thirty-one bytes overlap', () =>
|
|
test([
|
|
[0, 0, 31, 'thirty-one bytes'],
|
|
[1, 0, 32, 'one word'],
|
|
[2, 0, 33, 'one word and one byte'],
|
|
[41, 0, 72, 'two words and eight bytes'],
|
|
[69, 0, 100, 'three words and four bytes'],
|
|
]));
|
|
|
|
describe('copies forward with one word overlap', () =>
|
|
test([
|
|
[0, 0, 32, 'one word'],
|
|
[1, 0, 33, 'one word and one byte'],
|
|
[41, 0, 72, 'two words and eight bytes'],
|
|
[69, 0, 100, 'three words and four bytes'],
|
|
]));
|
|
|
|
describe('copies forward with one word and one byte overlap', () =>
|
|
test([
|
|
[0, 0, 33, 'one word and one byte'],
|
|
[40, 0, 72, 'two words and eight bytes'],
|
|
[68, 0, 100, 'three words and four bytes'],
|
|
]));
|
|
|
|
describe('copies forward with two words overlap', () =>
|
|
test([
|
|
[0, 0, 64, 'two words'],
|
|
[8, 0, 72, 'two words and eight bytes'],
|
|
[36, 0, 100, 'three words and four bytes'],
|
|
]));
|
|
|
|
describe('copies forward within one word and one byte overlap', () =>
|
|
test([[0, 0, 1, 'one byte'], [10, 0, 11, 'eleven bytes'], [15, 0, 16, 'sixteen bytes']]));
|
|
|
|
describe('copies backward', () =>
|
|
test([
|
|
[0, 128, 0, 'zero bytes'],
|
|
[0, 128, 1, 'one byte'],
|
|
[0, 128, 11, 'eleven bytes'],
|
|
[0, 128, 31, 'thirty-one bytes'],
|
|
[0, 128, 32, 'one word'],
|
|
[0, 128, 64, 'two words'],
|
|
[0, 128, 96, 'three words'],
|
|
[0, 128, 33, 'one word and one byte'],
|
|
[0, 128, 72, 'two words and eight bytes'],
|
|
[0, 128, 100, 'three words and four bytes'],
|
|
]));
|
|
|
|
describe('copies backward within one word', () =>
|
|
test([
|
|
[0, 16, 0, 'zero bytes'],
|
|
[0, 16, 1, 'one byte'],
|
|
[0, 16, 11, 'eleven bytes'],
|
|
[0, 16, 16, 'sixteen bytes'],
|
|
]));
|
|
|
|
describe('copies backward with one byte overlap', () =>
|
|
test([
|
|
[0, 0, 1, 'one byte'],
|
|
[0, 10, 11, 'eleven bytes'],
|
|
[0, 30, 31, 'thirty-one bytes'],
|
|
[0, 31, 32, 'one word'],
|
|
[0, 32, 33, 'one word and one byte'],
|
|
[0, 71, 72, 'two words and eight bytes'],
|
|
[0, 99, 100, 'three words and four bytes'],
|
|
]));
|
|
|
|
describe('copies backward with thirty-one bytes overlap', () =>
|
|
test([
|
|
[0, 0, 31, 'thirty-one bytes'],
|
|
[0, 1, 32, 'one word'],
|
|
[0, 2, 33, 'one word and one byte'],
|
|
[0, 41, 72, 'two words and eight bytes'],
|
|
[0, 69, 100, 'three words and four bytes'],
|
|
]));
|
|
|
|
describe('copies backward with one word overlap', () =>
|
|
test([
|
|
[0, 0, 32, 'one word'],
|
|
[0, 1, 33, 'one word and one byte'],
|
|
[0, 41, 72, 'two words and eight bytes'],
|
|
[0, 69, 100, 'three words and four bytes'],
|
|
]));
|
|
|
|
describe('copies backward with one word and one byte overlap', () =>
|
|
test([
|
|
[0, 0, 33, 'one word and one byte'],
|
|
[0, 40, 72, 'two words and eight bytes'],
|
|
[0, 68, 100, 'three words and four bytes'],
|
|
]));
|
|
|
|
describe('copies backward with two words overlap', () =>
|
|
test([
|
|
[0, 0, 64, 'two words'],
|
|
[0, 8, 72, 'two words and eight bytes'],
|
|
[0, 36, 100, 'three words and four bytes'],
|
|
]));
|
|
|
|
describe('copies forward within one word and one byte overlap', () =>
|
|
test([[0, 0, 1, 'one byte'], [0, 10, 11, 'eleven bytes'], [0, 15, 16, 'sixteen bytes']]));
|
|
});
|
|
});
|
|
// tslint:disable:max-file-line-count
|