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authorGreg Hysen <greg.hysen@gmail.com>2018-05-25 15:31:03 +0800
committerGreg Hysen <greg.hysen@gmail.com>2018-06-08 06:38:42 +0800
commit842363200b3b8aded3b03fc8e46a329ff9534e36 (patch)
tree8f535e5a16c298594b4d3f0959ec4b73f707cf48 /packages
parentd9f9895b2bcd3cde09febbe0e1af31be5ddc80e2 (diff)
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Tons of tests around nested byte arrays and ERC721 receiver
Diffstat (limited to 'packages')
-rw-r--r--packages/contracts/src/contracts/current/test/TestLibBytes/TestLibBytes.sol25
-rw-r--r--packages/contracts/src/contracts/current/utils/LibBytes/LibBytes.sol17
-rw-r--r--packages/contracts/test/asset_proxy/decoder.ts26
-rw-r--r--packages/contracts/test/asset_proxy/proxies.ts36
-rw-r--r--packages/contracts/test/libraries/lib_bytes.ts121
-rw-r--r--packages/order-utils/src/asset_proxy_utils.ts30
6 files changed, 223 insertions, 32 deletions
diff --git a/packages/contracts/src/contracts/current/test/TestLibBytes/TestLibBytes.sol b/packages/contracts/src/contracts/current/test/TestLibBytes/TestLibBytes.sol
index 69554605d..0bf11b03b 100644
--- a/packages/contracts/src/contracts/current/test/TestLibBytes/TestLibBytes.sol
+++ b/packages/contracts/src/contracts/current/test/TestLibBytes/TestLibBytes.sol
@@ -155,6 +155,7 @@ contract TestLibBytes is
return b;
}
+=======
/// @dev Reads the first 4 bytes from a byte array of arbitrary length.
/// @param b Byte array to read first 4 bytes from.
/// @return First 4 bytes of data.
@@ -166,4 +167,28 @@ contract TestLibBytes is
result = readFirst4(b);
return result;
}
+
+ function publicReadBytes(
+ bytes memory b,
+ uint256 index)
+ public
+ pure
+ returns (bytes memory result)
+ {
+ result = readBytes(b, index);
+ return result;
+ }
+
+
+ function publicWriteBytes(
+ bytes memory b,
+ uint256 index,
+ bytes memory input)
+ public
+ pure
+ returns (bytes memory)
+ {
+ writeBytes(b, index, input);
+ return b;
+ }
}
diff --git a/packages/contracts/src/contracts/current/utils/LibBytes/LibBytes.sol b/packages/contracts/src/contracts/current/utils/LibBytes/LibBytes.sol
index fb8359462..6351f1a46 100644
--- a/packages/contracts/src/contracts/current/utils/LibBytes/LibBytes.sol
+++ b/packages/contracts/src/contracts/current/utils/LibBytes/LibBytes.sol
@@ -300,24 +300,21 @@ contract LibBytes is
returns (bytes memory result)
{
// Read length of nested bytes
- require(
- b.length >= index + 32,
- GTE_32_LENGTH_REQUIRED
- );
uint256 nestedBytesLength = readUint256(b, index);
+ index += 32;
// Assert length of <b> is valid, given
// length of nested bytes
require(
- b.length >= index + 32 + nestedBytesLength,
+ b.length >= index + nestedBytesLength,
GTE_32_LENGTH_REQUIRED
);
// Allocate memory and copy value to result
result = new bytes(nestedBytesLength);
memcpy(
- getMemAddress(result) + 32, // +32 skips array length
- getMemAddress(b) + index + 32, // +32 skips array length
+ getMemAddress(result) + 32, // +32 skips array length
+ getMemAddress(b) + index + 32,
nestedBytesLength
);
@@ -344,9 +341,9 @@ contract LibBytes is
// Copy <input> into <b>
memcpy(
- getMemAddress(b) + index,
- getMemAddress(input),
- input.length + 32 /* 32 bytes to store length */
+ getMemAddress(b) + index + 32, // +32 to skip length of <b>
+ getMemAddress(input), // include length of byte array
+ input.length + 32 // +32 bytes to store length
);
}
}
diff --git a/packages/contracts/test/asset_proxy/decoder.ts b/packages/contracts/test/asset_proxy/decoder.ts
index 4416334d1..0f1413ff1 100644
--- a/packages/contracts/test/asset_proxy/decoder.ts
+++ b/packages/contracts/test/asset_proxy/decoder.ts
@@ -56,21 +56,45 @@ describe('LibAssetProxyDecoder', () => {
expect(decodedTokenAddress).to.be.equal(expectedDecodedProxyData.tokenAddress);
});
- it('should correctly decode ERC721 proxy data)', async () => {
+ it('should correctly decode ERC721 proxy data', async () => {
const tokenId = ZeroEx.generatePseudoRandomSalt();
const encodedProxyData = assetProxyUtils.encodeERC721ProxyData(testAddress, tokenId);
const expectedDecodedProxyData = assetProxyUtils.decodeERC721ProxyData(encodedProxyData);
let decodedAssetProxyId: number;
let decodedTokenAddress: string;
let decodedTokenId: BigNumber;
+ let decodedData: string;
[
decodedAssetProxyId,
decodedTokenAddress,
decodedTokenId,
+ decodedData,
] = await testAssetProxyDecoder.publicDecodeERC721Data.callAsync(encodedProxyData);
expect(decodedAssetProxyId).to.be.equal(expectedDecodedProxyData.assetProxyId);
expect(decodedTokenAddress).to.be.equal(expectedDecodedProxyData.tokenAddress);
expect(decodedTokenId).to.be.bignumber.equal(expectedDecodedProxyData.tokenId);
+ expect(decodedData).to.be.equal(expectedDecodedProxyData.data);
+ });
+
+ it('should correctly decode ERC721 proxy data with receiver data', async () => {
+ const tokenId = ZeroEx.generatePseudoRandomSalt();
+ const data = ethUtil.bufferToHex(assetProxyUtils.encodeUint256(ZeroEx.generatePseudoRandomSalt())) + 'FFFF';
+ const encodedProxyData = assetProxyUtils.encodeERC721ProxyData(testAddress, tokenId, data);
+ const expectedDecodedProxyData = assetProxyUtils.decodeERC721ProxyData(encodedProxyData);
+ let decodedAssetProxyId: number;
+ let decodedTokenAddress: string;
+ let decodedTokenId: BigNumber;
+ let decodedData: string;
+ [
+ decodedAssetProxyId,
+ decodedTokenAddress,
+ decodedTokenId,
+ decodedData,
+ ] = await testAssetProxyDecoder.publicDecodeERC721Data.callAsync(encodedProxyData);
+ expect(decodedAssetProxyId).to.be.equal(expectedDecodedProxyData.assetProxyId);
+ expect(decodedTokenAddress).to.be.equal(expectedDecodedProxyData.tokenAddress);
+ expect(decodedTokenId).to.be.bignumber.equal(expectedDecodedProxyData.tokenId);
+ expect(decodedData).to.be.equal(expectedDecodedProxyData.data);
});
});
});
diff --git a/packages/contracts/test/asset_proxy/proxies.ts b/packages/contracts/test/asset_proxy/proxies.ts
index d7f27deb4..4995e95a0 100644
--- a/packages/contracts/test/asset_proxy/proxies.ts
+++ b/packages/contracts/test/asset_proxy/proxies.ts
@@ -261,7 +261,7 @@ describe('Asset Transfer Proxies', () => {
});
});
- describe.only('Transfer Proxy - ERC721', () => {
+ describe('Transfer Proxy - ERC721', () => {
describe('transferFrom', () => {
it('should successfully transfer tokens', async () => {
// Construct metadata for ERC721 proxy
@@ -289,7 +289,7 @@ describe('Asset Transfer Proxies', () => {
expect(newOwnerMakerAsset).to.be.bignumber.equal(takerAddress);
});
- it.only('should call onERC721Received when transferring to a smart contract', async () => {
+ it('should call onERC721Received when transferring to a smart contract', async () => {
// Construct metadata for ERC721 proxy
const encodedProxyMetadata = assetProxyUtils.encodeERC721ProxyData(
erc721Token.address,
@@ -326,9 +326,11 @@ describe('Asset Transfer Proxies', () => {
it('should call onERC721Received when transferring to a smart contract and receive extra data', async () => {
// Construct metadata for ERC721 proxy
+ const data = ethUtil.bufferToHex(assetProxyUtils.encodeUint256(ZeroEx.generatePseudoRandomSalt()));
const encodedProxyMetadata = assetProxyUtils.encodeERC721ProxyData(
erc721Token.address,
erc721MakerTokenId,
+ data,
);
// Verify pre-condition
const ownerMakerAsset = await erc721Token.ownerOf.callAsync(erc721MakerTokenId);
@@ -348,14 +350,17 @@ describe('Asset Transfer Proxies', () => {
tx.logs = _.filter(tx.logs, log => log.address === erc721Receiver.address);
const logDecoder = new LogDecoder(constants.TESTRPC_NETWORK_ID);
tx.logs = _.map(tx.logs, log => logDecoder.decodeLogOrThrow(log));
- // Verify erc721 receiver log emitted
- console.log(tx.logs);
+ // Validate log emitted by erc721 receiver
+ expect(tx.logs.length).to.be.equal(1);
+ const tokenReceivedLog = tx.logs[0] as LogWithDecodedArgs<TokenReceivedContractEventArgs>;
+ expect(tokenReceivedLog.args.from).to.be.equal(makerAddress);
+ expect(tokenReceivedLog.args.tokenId).to.be.bignumber.equal(erc721MakerTokenId);
+ expect(tokenReceivedLog.args.data).to.be.equal(data);
// Verify transfer was successful
const newOwnerMakerAsset = await erc721Token.ownerOf.callAsync(erc721MakerTokenId);
expect(newOwnerMakerAsset).to.be.bignumber.equal(erc721Receiver.address);
});
- /*
it('should throw if receiving contract does not have onERC721Received', async () => {
// Construct metadata for ERC721 proxy
const encodedProxyMetadata = assetProxyUtils.encodeERC721ProxyData(
@@ -368,17 +373,16 @@ describe('Asset Transfer Proxies', () => {
// Perform a transfer from makerAddress to takerAddress
const erc20Balances = await erc20Wrapper.getBalancesAsync();
const amount = new BigNumber(1);
- await erc721Proxy.transferFrom.sendTransactionAsync(
- encodedProxyMetadata,
- makerAddress,
- takerAddress,
- amount,
- { from: exchangeAddress },
- );
- // Verify transfer was successful
- const newOwnerMakerAsset = await erc721Token.ownerOf.callAsync(erc721MakerTokenId);
- expect(newOwnerMakerAsset).to.be.bignumber.equal(takerAddress);
- });*/
+ return expect(
+ erc721Proxy.transferFrom.sendTransactionAsync(
+ encodedProxyMetadata,
+ makerAddress,
+ erc20Proxy.address, // the ERC20 proxy does not have an ERC721 receiver
+ amount,
+ { from: exchangeAddress },
+ ),
+ ).to.be.rejectedWith(constants.REVERT);
+ });
it('should throw if transferring 0 amount of a token', async () => {
// Construct metadata for ERC721 proxy
diff --git a/packages/contracts/test/libraries/lib_bytes.ts b/packages/contracts/test/libraries/lib_bytes.ts
index 0996cdc84..a6e3c7d37 100644
--- a/packages/contracts/test/libraries/lib_bytes.ts
+++ b/packages/contracts/test/libraries/lib_bytes.ts
@@ -6,7 +6,8 @@ import ethUtil = require('ethereumjs-util');
import { TestLibBytesContract } from '../../src/generated_contract_wrappers/test_lib_bytes';
import { artifacts } from '../../src/utils/artifacts';
-import { expectRevertOrOtherErrorAsync } from '../../src/utils/assertions';
+import { expectRevertOrOtherErrorAsync, expectRevertOrOtherErrorAsync } from '../../src/utils/assertions';
+import { assetProxyUtils } from '../../src/utils/asset_proxy_utils';
import { chaiSetup } from '../../src/utils/chai_setup';
import { constants } from '../../src/utils/constants';
import { provider, txDefaults, web3Wrapper } from '../../src/utils/web3_wrapper';
@@ -28,6 +29,15 @@ describe('LibBytes', () => {
let testAddress: string;
const testBytes32 = '0x102030405060708090a0b0c0d0e0f0102030405060708090a0b0c0d0e0f01020';
const testUint256 = new BigNumber(testBytes32, 16);
+ let shortData: string;
+ let shortTestBytes: string;
+ let shortTestBytesAsBuffer: Buffer;
+ let wordOfData: string;
+ let wordOfTestBytes: string;
+ let wordOfTestBytesAsBuffer: Buffer;
+ let longData: string;
+ let longTestBytes: string;
+ let longTestBytesAsBuffer: Buffer;
before(async () => {
await blockchainLifecycle.startAsync();
@@ -48,6 +58,26 @@ describe('LibBytes', () => {
expect(byteArrayLongerThan32BytesLength).to.be.greaterThan(32);
const testBytes32Length = ethUtil.toBuffer(testBytes32).byteLength;
expect(testBytes32Length).to.be.equal(32);
+ // Create short test bytes
+ shortData = '0xffffaa';
+ const encodedShortData = ethUtil.toBuffer(shortData);
+ const shortDataLength = new BigNumber(encodedShortData.byteLength);
+ const encodedShortDataLength = assetProxyUtils.encodeUint256(shortDataLength);
+ shortTestBytesAsBuffer = Buffer.concat([encodedShortDataLength, encodedShortData]);
+ shortTestBytes = ethUtil.bufferToHex(shortTestBytesAsBuffer);
+ // Create test bytes one word in length
+ wordOfData = ethUtil.bufferToHex(assetProxyUtils.encodeUint256(ZeroEx.generatePseudoRandomSalt()));
+ const encodedWordOfData = ethUtil.toBuffer(wordOfData);
+ const wordOfDataLength = new BigNumber(encodedWordOfData.byteLength);
+ const encodedWordOfDataLength = assetProxyUtils.encodeUint256(wordOfDataLength);
+ wordOfTestBytesAsBuffer = Buffer.concat([encodedWordOfDataLength, encodedWordOfData]);
+ wordOfTestBytes = ethUtil.bufferToHex(wordOfTestBytesAsBuffer);
+ // Create long test bytes (combines short test bytes with word of test bytes)
+ longData = ethUtil.bufferToHex(Buffer.concat([encodedShortData, encodedWordOfData]));
+ const longDataLength = new BigNumber(encodedShortData.byteLength + encodedWordOfData.byteLength);
+ const encodedLongDataLength = assetProxyUtils.encodeUint256(longDataLength);
+ longTestBytesAsBuffer = Buffer.concat([encodedLongDataLength, encodedShortData, encodedWordOfData]);
+ longTestBytes = ethUtil.bufferToHex(longTestBytesAsBuffer);
});
beforeEach(async () => {
await blockchainLifecycle.startAsync();
@@ -285,6 +315,7 @@ describe('LibBytes', () => {
});
*/
+=======
describe('readFirst4', () => {
// 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 () => {
@@ -300,4 +331,92 @@ describe('LibBytes', () => {
expect(first4Bytes).to.equal(expectedFirst4Bytes);
});
});
+
+ describe('readBytes', () => {
+ 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.publicReadBytes.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 shortDataAsBuffer = ethUtil.toBuffer(shortData);
+ const combinedByteArrayBuffer = Buffer.concat([prefixByteArrayBuffer, shortTestBytesAsBuffer]);
+ const combinedByteArray = ethUtil.bufferToHex(combinedByteArrayBuffer);
+ const testUint256Offset = new BigNumber(prefixByteArrayBuffer.byteLength);
+ const bytes = await libBytes.publicReadBytes.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.publicReadBytes.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 wordOfDataAsBuffer = ethUtil.toBuffer(wordOfData);
+ const combinedByteArrayBuffer = Buffer.concat([prefixByteArrayBuffer, wordOfTestBytesAsBuffer]);
+ const combinedByteArray = ethUtil.bufferToHex(combinedByteArrayBuffer);
+ const testUint256Offset = new BigNumber(prefixByteArrayBuffer.byteLength);
+ const bytes = await libBytes.publicReadBytes.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.publicReadBytes.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 longDataAsBuffer = ethUtil.toBuffer(longData);
+ const combinedByteArrayBuffer = Buffer.concat([prefixByteArrayBuffer, longTestBytesAsBuffer]);
+ const combinedByteArray = ethUtil.bufferToHex(combinedByteArrayBuffer);
+ const testUint256Offset = new BigNumber(prefixByteArrayBuffer.byteLength);
+ const bytes = await libBytes.publicReadBytes.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 expect(libBytes.publicReadBytes.callAsync(byteArrayShorterThan32Bytes, offset)).to.be.rejectedWith(
+ constants.REVERT,
+ );
+ });
+
+ it('should fail if we store a nested byte array length, without a nested byte array)', async () => {
+ const offset = new BigNumber(0);
+ return expect(libBytes.publicReadBytes.callAsync(testBytes32, offset)).to.be.rejectedWith(constants.REVERT);
+ });
+
+ it('should fail if the length between the offset and end of the byte array is too short to hold the length of a nested byte array)', async () => {
+ const badOffset = new BigNumber(ethUtil.toBuffer(byteArrayShorterThan32Bytes).byteLength);
+ return expect(
+ libBytes.publicReadBytes.callAsync(byteArrayShorterThan32Bytes, badOffset),
+ ).to.be.rejectedWith(constants.REVERT);
+ });
+
+ it('should fail if the length between the offset and end of the byte array is too short to hold the nested byte array)', async () => {
+ const badOffset = new BigNumber(ethUtil.toBuffer(testBytes32).byteLength);
+ return expect(libBytes.publicReadBytes.callAsync(testBytes32, badOffset)).to.be.rejectedWith(
+ constants.REVERT,
+ );
+ });
+ });
+
+ /// @TODO Implement test cases for writeUint256. Test template below.
+ /// Currently, the generated contract wrappers do not support this library's write methods.
+ /*
+ describe('writeBytes', () => {
+ it('should successfully write bytes when it takes up the whole array)', async () => {});
+ it('should successfully write bytes when it is offset in the array)', async () => {});
+ it('should fail if the byte array is too short to hold the nested bytes)', async () => {});
+ it('should fail if the length between the offset and end of the byte array is too short to hold the nested bytes)', async () => {});
+ });
+ */
});
diff --git a/packages/order-utils/src/asset_proxy_utils.ts b/packages/order-utils/src/asset_proxy_utils.ts
index 55f2d56df..8255376a1 100644
--- a/packages/order-utils/src/asset_proxy_utils.ts
+++ b/packages/order-utils/src/asset_proxy_utils.ts
@@ -2,6 +2,7 @@ import { AssetProxyId, ERC20ProxyData, ERC721ProxyData, ProxyData } from '@0xpro
import { BigNumber } from '@0xproject/utils';
import BN = require('bn.js');
import ethUtil = require('ethereumjs-util');
+import * as _ from 'lodash';
const ERC20_PROXY_METADATA_BYTE_LENGTH = 21;
const ERC721_PROXY_METADATA_BYTE_LENGTH = 53;
@@ -74,19 +75,25 @@ export const assetProxyUtils = {
};
return erc20ProxyData;
},
- encodeERC721ProxyData(tokenAddress: string, tokenId: BigNumber): string {
+ encodeERC721ProxyData(tokenAddress: string, tokenId: BigNumber, data?: string): string {
const encodedAssetProxyId = assetProxyUtils.encodeAssetProxyId(AssetProxyId.ERC721);
const encodedAddress = assetProxyUtils.encodeAddress(tokenAddress);
const encodedTokenId = assetProxyUtils.encodeUint256(tokenId);
const encodedMetadata = Buffer.concat([encodedAddress, encodedTokenId, encodedAssetProxyId]);
+ if (!_.isUndefined(data)) {
+ const encodedData = ethUtil.toBuffer(data);
+ const dataLength = new BigNumber(encodedData.byteLength);
+ const encodedDataLength = assetProxyUtils.encodeUint256(dataLength);
+ encodedMetadata = Buffer.concat([encodedMetadata, encodedDataLength, encodedData]);
+ }
const encodedMetadataHex = ethUtil.bufferToHex(encodedMetadata);
return encodedMetadataHex;
},
decodeERC721ProxyData(proxyData: string): ERC721ProxyData {
const encodedProxyMetadata = ethUtil.toBuffer(proxyData);
- if (encodedProxyMetadata.byteLength !== ERC721_PROXY_METADATA_BYTE_LENGTH) {
+ if (encodedProxyMetadata.byteLength < ERC721_PROXY_METADATA_BYTE_LENGTH) {
throw new Error(
- `Could not decode ERC20 Proxy Data. Expected length of encoded data to be 53. Got ${
+ `Could not decode ERC20 Proxy Data. Expected length of encoded data to be at least 53. Got ${
encodedProxyMetadata.byteLength
}`,
);
@@ -106,10 +113,25 @@ export const assetProxyUtils = {
const tokenIdOffset = ERC721_PROXY_METADATA_BYTE_LENGTH - 1;
const encodedTokenId = encodedProxyMetadata.slice(addressOffset, tokenIdOffset);
const tokenId = assetProxyUtils.decodeUint256(encodedTokenId);
- const erc721ProxyData = {
+ const nullData = '0x';
+ let data = nullData;
+ if (encodedProxyMetadata.byteLength > 53) {
+ const encodedDataLength = encodedProxyMetadata.slice(53, 85);
+ const dataLength = assetProxyUtils.decodeUint256(encodedDataLength);
+ const expectedDataLength = new BigNumber(encodedProxyMetadata.byteLength - 85);
+ if (!dataLength.equals(expectedDataLength)) {
+ throw new Error(
+ `Data length (${dataLength}) does not match actual length of data (${expectedDataLength})`,
+ );
+ }
+ const encodedData = encodedProxyMetadata.slice(85);
+ data = ethUtil.bufferToHex(encodedData);
+ }
+ const erc721ProxyData: ERC721ProxyData = {
assetProxyId,
tokenAddress,
tokenId,
+ data,
};
return erc721ProxyData;
},