786 lines
42 KiB
TypeScript
786 lines
42 KiB
TypeScript
import { blockchainTests, constants, expect } from '@0x/contracts-test-utils';
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import { BigNumber, LibBytesRevertErrors } from '@0x/utils';
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import BN = require('bn.js');
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import * as ethUtil from 'ethereumjs-util';
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import * as _ from 'lodash';
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import { artifacts } from './artifacts';
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import { TestLibBytesContract } from './wrappers';
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// BUG: Ideally we would use fromHex(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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blockchainTests('LibBytes', env => {
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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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before(async () => {
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// Setup accounts & addresses
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const accounts = await env.getAccountAddressesAsync();
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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(
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artifacts.TestLibBytes,
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env.provider,
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env.txDefaults,
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artifacts,
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);
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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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});
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describe('popLastByte', () => {
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it('should revert if length is 0', async () => {
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const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
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LibBytesRevertErrors.InvalidByteOperationErrorCodes.LengthGreaterThanZeroRequired,
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constants.ZERO_AMOUNT,
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constants.ZERO_AMOUNT,
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);
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return expect(libBytes.publicPopLastByte(constants.NULL_BYTES).callAsync()).to.revertWith(expectedError);
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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(byteArrayLongerThan32Bytes).callAsync();
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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(testByte).callAsync();
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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('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
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.publicEquals(byteArrayShorterThan32Bytes, byteArrayShorterThan32Bytes)
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.callAsync();
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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
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.publicEquals(byteArrayLongerThan32Bytes, byteArrayLongerThan32Bytes)
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.callAsync();
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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
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.publicEquals(byteArrayShorterThan32Bytes, byteArrayLongerThan32Bytes)
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.callAsync();
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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
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.publicEquals(byteArrayLongerThan32Bytes, byteArrayShorterThan32Bytes)
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.callAsync();
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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
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.publicEquals(byteArrayLongerThan32BytesFirstBytesSwapped, byteArrayLongerThan32Bytes)
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.callAsync();
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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
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.publicEquals(byteArrayLongerThan32BytesLastBytesSwapped, byteArrayLongerThan32Bytes)
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.callAsync();
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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('0x0102', '0x0103').callAsync();
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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('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(byteArray, testAddressOffset).callAsync();
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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(combinedByteArray, testAddressOffset).callAsync();
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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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const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
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LibBytesRevertErrors.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsTwentyRequired,
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new BigNumber(3),
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new BigNumber(20),
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);
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return expect(libBytes.publicReadAddress(shortByteArray, offset).callAsync()).to.revertWith(expectedError);
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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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const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
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LibBytesRevertErrors.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsTwentyRequired,
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new BigNumber(20),
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new BigNumber(40),
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);
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return expect(libBytes.publicReadAddress(byteArray, badOffset).callAsync()).to.revertWith(expectedError);
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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
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.publicWriteAddress(byteArray, testAddressOffset, testAddressB)
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.callAsync();
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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
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.publicWriteAddress(combinedByteArray, testAddressOffset, testAddressB)
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.callAsync();
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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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const byteLen = ethUtil.toBuffer(byteArrayShorterThan20Bytes).byteLength;
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const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
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LibBytesRevertErrors.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsTwentyRequired,
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new BigNumber(byteLen),
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new BigNumber(20),
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);
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return expect(
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libBytes.publicWriteAddress(byteArrayShorterThan20Bytes, offset, testAddress).callAsync(),
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).to.revertWith(expectedError);
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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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const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
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LibBytesRevertErrors.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsTwentyRequired,
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badOffset,
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badOffset.plus(new BigNumber(20)),
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);
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return expect(libBytes.publicWriteAddress(byteArray, badOffset, testAddress).callAsync()).to.revertWith(
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expectedError,
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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(testBytes32, testBytes32Offset).callAsync();
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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(combinedByteArray, testBytes32Offset).callAsync();
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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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const byteLen = new BigNumber(fromHex(byteArrayShorterThan32Bytes).length);
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const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
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LibBytesRevertErrors.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsThirtyTwoRequired,
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byteLen,
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new BigNumber(32),
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);
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return expect(libBytes.publicReadBytes32(byteArrayShorterThan32Bytes, offset).callAsync()).to.revertWith(
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expectedError,
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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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const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
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LibBytesRevertErrors.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsThirtyTwoRequired,
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badOffset,
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badOffset.plus(new BigNumber(32)),
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);
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return expect(libBytes.publicReadBytes32(testBytes32, badOffset).callAsync()).to.revertWith(expectedError);
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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
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.publicWriteBytes32(byteArray, testBytes32Offset, testBytes32B)
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.callAsync();
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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
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.publicWriteBytes32(combinedByteArray, testBytes32Offset, testBytes32B)
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.callAsync();
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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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const byteLen = new BigNumber(fromHex(byteArrayShorterThan32Bytes).length);
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const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
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LibBytesRevertErrors.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsThirtyTwoRequired,
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byteLen,
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new BigNumber(32),
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);
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return expect(
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libBytes.publicWriteBytes32(byteArrayShorterThan32Bytes, offset, testBytes32).callAsync(),
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).to.revertWith(expectedError);
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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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const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
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LibBytesRevertErrors.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsThirtyTwoRequired,
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badOffset,
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badOffset.plus(new BigNumber(32)),
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);
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return expect(libBytes.publicWriteBytes32(byteArray, badOffset, testBytes32).callAsync()).to.revertWith(
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expectedError,
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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(byteArray, testUint256Offset).callAsync();
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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(combinedByteArray, testUint256Offset).callAsync();
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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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const byteLen = new BigNumber(fromHex(byteArrayShorterThan32Bytes).length);
|
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const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
|
|
LibBytesRevertErrors.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsThirtyTwoRequired,
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byteLen,
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|
new BigNumber(32),
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);
|
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return expect(libBytes.publicReadUint256(byteArrayShorterThan32Bytes, offset).callAsync()).to.revertWith(
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expectedError,
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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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const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
|
|
LibBytesRevertErrors.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsThirtyTwoRequired,
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badOffset,
|
|
badOffset.plus(new BigNumber(32)),
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|
);
|
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return expect(libBytes.publicReadUint256(byteArray, badOffset).callAsync()).to.revertWith(expectedError);
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|
});
|
|
});
|
|
|
|
describe('writeUint256', () => {
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it('should successfully write uint256 when the address takes up the whole array', async () => {
|
|
const byteArray = testBytes32;
|
|
const testUint256Offset = new BigNumber(0);
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const newByteArray = await libBytes
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.publicWriteUint256(byteArray, testUint256Offset, testUint256B)
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.callAsync();
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const newByteArrayAsUint256 = new BigNumber(newByteArray, 16);
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return expect(newByteArrayAsUint256).to.be.bignumber.equal(testUint256B);
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|
});
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|
it('should successfully write uint256 when it is offset in the array', async () => {
|
|
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 testUint256Offset = new BigNumber(prefixByteArrayBuffer.byteLength);
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const newByteArray = await libBytes
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.publicWriteUint256(combinedByteArray, testUint256Offset, testUint256B)
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.callAsync();
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const newByteArrayBuffer = ethUtil.toBuffer(newByteArray);
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const uint256FromOffsetBuffer = newByteArrayBuffer.slice(prefixByteArrayBuffer.byteLength);
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const uint256FromOffset = new BigNumber(
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ethUtil.addHexPrefix(ethUtil.bufferToHex(uint256FromOffsetBuffer)),
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16,
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);
|
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return expect(uint256FromOffset).to.be.bignumber.equal(testUint256B);
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|
});
|
|
it('should fail if the byte array is too short to hold a uint256', async () => {
|
|
const offset = new BigNumber(0);
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|
const byteLen = new BigNumber(fromHex(byteArrayShorterThan32Bytes).length);
|
|
const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
|
|
LibBytesRevertErrors.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsThirtyTwoRequired,
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byteLen,
|
|
new BigNumber(32),
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);
|
|
return expect(
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|
libBytes.publicWriteUint256(byteArrayShorterThan32Bytes, offset, testUint256).callAsync(),
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).to.revertWith(expectedError);
|
|
});
|
|
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);
|
|
const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
|
|
LibBytesRevertErrors.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsThirtyTwoRequired,
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|
badOffset,
|
|
badOffset.plus(new BigNumber(32)),
|
|
);
|
|
return expect(libBytes.publicWriteUint256(byteArray, badOffset, testUint256).callAsync()).to.revertWith(
|
|
expectedError,
|
|
);
|
|
});
|
|
});
|
|
|
|
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 byteLen = fromHex(byteArrayLessThan4Bytes).length;
|
|
const offset = new BigNumber(0);
|
|
const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
|
|
LibBytesRevertErrors.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsFourRequired,
|
|
new BigNumber(byteLen), // length of byteArrayLessThan4Bytes
|
|
new BigNumber(4),
|
|
);
|
|
return expect(libBytes.publicReadBytes4(byteArrayLessThan4Bytes, offset).callAsync()).to.revertWith(
|
|
expectedError,
|
|
);
|
|
});
|
|
it('should return the first 4 bytes of a byte array of arbitrary length', async () => {
|
|
const first4Bytes = await libBytes
|
|
.publicReadBytes4(byteArrayLongerThan32Bytes, new BigNumber(0))
|
|
.callAsync();
|
|
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(testBytes4, testBytes4Offset).callAsync();
|
|
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(combinedByteArray, testBytes4Offset).callAsync();
|
|
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);
|
|
const byteLen = new BigNumber(fromHex(testBytes4).length);
|
|
const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
|
|
LibBytesRevertErrors.InvalidByteOperationErrorCodes.LengthGreaterThanOrEqualsFourRequired,
|
|
byteLen,
|
|
badOffset.plus(new BigNumber(4)),
|
|
);
|
|
return expect(libBytes.publicReadBytes4(testBytes4, badOffset).callAsync()).to.revertWith(expectedError);
|
|
});
|
|
});
|
|
|
|
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(memHex, new BigNumber(dest), new BigNumber(source), new BigNumber(length))
|
|
.callAsync();
|
|
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']]));
|
|
});
|
|
|
|
describe('slice', () => {
|
|
it('should revert if from > to', async () => {
|
|
const from = new BigNumber(1);
|
|
const to = new BigNumber(0);
|
|
const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
|
|
LibBytesRevertErrors.InvalidByteOperationErrorCodes.FromLessThanOrEqualsToRequired,
|
|
from,
|
|
to,
|
|
);
|
|
return expect(libBytes.publicSlice(byteArrayLongerThan32Bytes, from, to).callAsync()).to.revertWith(
|
|
expectedError,
|
|
);
|
|
});
|
|
it('should return a byte array of length 0 if from == to', async () => {
|
|
const from = new BigNumber(0);
|
|
const to = from;
|
|
const [result, original] = await libBytes.publicSlice(byteArrayLongerThan32Bytes, from, to).callAsync();
|
|
expect(original).to.eq(byteArrayLongerThan32Bytes);
|
|
expect(result).to.eq(constants.NULL_BYTES);
|
|
});
|
|
it('should return a byte array of length 0 if from == to == b.length', async () => {
|
|
const byteLen = fromHex(byteArrayLongerThan32Bytes).length;
|
|
const from = new BigNumber(byteLen);
|
|
const to = from;
|
|
const [result, original] = await libBytes.publicSlice(byteArrayLongerThan32Bytes, from, to).callAsync();
|
|
expect(original).to.eq(byteArrayLongerThan32Bytes);
|
|
expect(result).to.eq(constants.NULL_BYTES);
|
|
});
|
|
it('should revert if to > input.length', async () => {
|
|
const byteLen: number = (byteArrayLongerThan32Bytes.length - 2) / 2;
|
|
const from = new BigNumber(0);
|
|
const to = new BigNumber(byteLen).plus(1);
|
|
const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
|
|
LibBytesRevertErrors.InvalidByteOperationErrorCodes.ToLessThanOrEqualsLengthRequired,
|
|
to,
|
|
new BigNumber(byteLen),
|
|
);
|
|
return expect(libBytes.publicSlice(byteArrayLongerThan32Bytes, from, to).callAsync()).to.revertWith(
|
|
expectedError,
|
|
);
|
|
});
|
|
it('should slice a section of the input', async () => {
|
|
const from = new BigNumber(1);
|
|
const to = new BigNumber(2);
|
|
const [result, original] = await libBytes.publicSlice(byteArrayLongerThan32Bytes, from, to).callAsync();
|
|
const expectedResult = `0x${byteArrayLongerThan32Bytes.slice(4, 6)}`;
|
|
expect(original).to.eq(byteArrayLongerThan32Bytes);
|
|
expect(result).to.eq(expectedResult);
|
|
});
|
|
it('should copy the entire input if from = 0 and to = input.length', async () => {
|
|
const byteLen = fromHex(byteArrayLongerThan32Bytes).length;
|
|
const from = new BigNumber(0);
|
|
const to = new BigNumber(byteLen);
|
|
const [result, original] = await libBytes.publicSlice(byteArrayLongerThan32Bytes, from, to).callAsync();
|
|
expect(original).to.eq(byteArrayLongerThan32Bytes);
|
|
expect(result).to.eq(byteArrayLongerThan32Bytes);
|
|
});
|
|
});
|
|
|
|
describe('sliceDestructive', () => {
|
|
it('should revert if from > to', async () => {
|
|
const from = new BigNumber(1);
|
|
const to = new BigNumber(0);
|
|
const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
|
|
LibBytesRevertErrors.InvalidByteOperationErrorCodes.FromLessThanOrEqualsToRequired,
|
|
from,
|
|
to,
|
|
);
|
|
return expect(libBytes.publicSlice(byteArrayLongerThan32Bytes, from, to).callAsync()).to.revertWith(
|
|
expectedError,
|
|
);
|
|
});
|
|
it('should return a byte array of length 0 if from == to', async () => {
|
|
const from = new BigNumber(0);
|
|
const to = from;
|
|
const [result] = await libBytes.publicSliceDestructive(byteArrayLongerThan32Bytes, from, to).callAsync();
|
|
expect(result).to.eq(constants.NULL_BYTES);
|
|
});
|
|
it('should return a byte array of length 0 if from == to == b.length', async () => {
|
|
const byteLen = fromHex(byteArrayLongerThan32Bytes).length;
|
|
const from = new BigNumber(byteLen);
|
|
const to = from;
|
|
const [result] = await libBytes.publicSliceDestructive(byteArrayLongerThan32Bytes, from, to).callAsync();
|
|
expect(result).to.eq(constants.NULL_BYTES);
|
|
});
|
|
it('should revert if to > input.length', async () => {
|
|
const byteLen = fromHex(byteArrayLongerThan32Bytes).length;
|
|
const from = new BigNumber(0);
|
|
const to = new BigNumber(byteLen).plus(1);
|
|
const expectedError = new LibBytesRevertErrors.InvalidByteOperationError(
|
|
LibBytesRevertErrors.InvalidByteOperationErrorCodes.ToLessThanOrEqualsLengthRequired,
|
|
to,
|
|
new BigNumber(byteLen),
|
|
);
|
|
return expect(
|
|
libBytes.publicSliceDestructive(byteArrayLongerThan32Bytes, from, to).callAsync(),
|
|
).to.revertWith(expectedError);
|
|
});
|
|
it('should slice a section of the input', async () => {
|
|
const from = new BigNumber(1);
|
|
const to = new BigNumber(2);
|
|
const [result] = await libBytes.publicSliceDestructive(byteArrayLongerThan32Bytes, from, to).callAsync();
|
|
const expectedResult = `0x${byteArrayLongerThan32Bytes.slice(4, 6)}`;
|
|
expect(result).to.eq(expectedResult);
|
|
});
|
|
it('should copy the entire input if from = 0 and to = input.length', async () => {
|
|
const byteLen = fromHex(byteArrayLongerThan32Bytes).length;
|
|
const from = new BigNumber(0);
|
|
const to = new BigNumber(byteLen);
|
|
const [result] = await libBytes.publicSliceDestructive(byteArrayLongerThan32Bytes, from, to).callAsync();
|
|
expect(result).to.eq(byteArrayLongerThan32Bytes);
|
|
});
|
|
});
|
|
|
|
describe('writeLength', () => {
|
|
it('should return a null byte array if length is set to 0', async () => {
|
|
const result = await libBytes
|
|
.publicWriteLength(byteArrayLongerThan32Bytes, constants.ZERO_AMOUNT, constants.NULL_BYTES)
|
|
.callAsync();
|
|
expect(result).to.eq(constants.NULL_BYTES);
|
|
});
|
|
it('should return the same byte array if length is unchanged', async () => {
|
|
const byteLen = fromHex(byteArrayLongerThan32Bytes).length;
|
|
const result = await libBytes
|
|
.publicWriteLength(byteArrayLongerThan32Bytes, new BigNumber(byteLen), constants.NULL_BYTES)
|
|
.callAsync();
|
|
expect(result).to.eq(byteArrayLongerThan32Bytes);
|
|
});
|
|
it('should shave off lower order bytes if new length is less than original', async () => {
|
|
const byteLen = fromHex(byteArrayLongerThan32Bytes).length;
|
|
const newLen = new BigNumber(byteLen).dividedToIntegerBy(2);
|
|
const result = await libBytes
|
|
.publicWriteLength(byteArrayLongerThan32Bytes, newLen, constants.NULL_BYTES)
|
|
.callAsync();
|
|
expect(result).to.eq(
|
|
byteArrayLongerThan32Bytes.slice(
|
|
0,
|
|
newLen
|
|
.multipliedBy(2)
|
|
.plus(2)
|
|
.toNumber(),
|
|
),
|
|
);
|
|
});
|
|
it("should right pad with 0's if new length is greater than original and no extra bytes are appended", async () => {
|
|
const byteLen = fromHex(byteArrayLongerThan32Bytes).length;
|
|
const newLen = new BigNumber(byteLen).multipliedBy(2);
|
|
const result = await libBytes
|
|
.publicWriteLength(byteArrayLongerThan32Bytes, newLen, constants.NULL_BYTES)
|
|
.callAsync();
|
|
expect(result).to.eq(`${byteArrayLongerThan32Bytes}${'0'.repeat(byteArrayLongerThan32Bytes.length - 2)}`);
|
|
});
|
|
it('should right pad with extra bytes if specified', async () => {
|
|
const byteLen = fromHex(byteArrayLongerThan32Bytes).length;
|
|
const newLen = new BigNumber(byteLen).multipliedBy(2);
|
|
const result = await libBytes
|
|
.publicWriteLength(byteArrayLongerThan32Bytes, newLen, byteArrayLongerThan32Bytes)
|
|
.callAsync();
|
|
expect(result).to.eq(`${byteArrayLongerThan32Bytes}${byteArrayLongerThan32Bytes.slice(2)}`);
|
|
});
|
|
it('should result in the same byte array if length is reduced and reset', async () => {
|
|
const byteLen = fromHex(byteArrayLongerThan32Bytes).length;
|
|
const tempByteLen = new BigNumber(byteLen).dividedToIntegerBy(2);
|
|
return expect(
|
|
libBytes.assertBytesUnchangedAfterLengthReset(byteArrayLongerThan32Bytes, tempByteLen).callAsync(),
|
|
).to.be.fulfilled('');
|
|
});
|
|
it('should result in the same byte array if length is increased and reset', async () => {
|
|
const byteLen = fromHex(byteArrayLongerThan32Bytes).length;
|
|
const tempByteLen = new BigNumber(byteLen).multipliedBy(2);
|
|
return expect(
|
|
libBytes.assertBytesUnchangedAfterLengthReset(byteArrayLongerThan32Bytes, tempByteLen).callAsync(),
|
|
).to.be.fulfilled('');
|
|
});
|
|
});
|
|
});
|
|
// tslint:disable:max-file-line-count
|