Add tests for etherscan events

5 files changed, 124 insertions, 10 deletions

diff --git a/packages/pipeline/package.json b/packages/pipeline/package.json
index b4ed33d8d..cdcd5ed18 100644
--- a/packages/pipeline/package.json
+++ b/packages/pipeline/package.json
@@ -31,7 +31,12 @@
     "devDependencies": {
         "@0xproject/tslint-config": "^1.0.7",
         "tslint": "5.11.0",
-        "typescript": "3.0.1"
+        "typescript": "3.0.1",
+        "mocha": "^5.2.0",
+        "chai": "^4.1.2",
+        "chai-as-promised": "^7.1.1",
+        "chai-bignumber": "^2.0.2",
+        "dirty-chai": "^2.0.1"
     },
     "dependencies": {
         "@0xproject/contract-wrappers": "^1.0.1",
diff --git a/packages/pipeline/src/data-sources/etherscan/events.ts b/packages/pipeline/src/data-sources/etherscan/events.ts
index 50962a266..3083af267 100644
--- a/packages/pipeline/src/data-sources/etherscan/events.ts
+++ b/packages/pipeline/src/data-sources/etherscan/events.ts
@@ -25,21 +25,30 @@ export interface EventsResponseResult {
     transactionIndex: string;
 }
 
-function convertResponseToLogEntry(result: EventsResponseResult): LogEntry {
-    const radix = 10;
+const hexRadix = 16;
+
+function hexToInt(hex: string): number {
+    return parseInt(hex.replace('0x', ''), hexRadix);
+}
+
+// Converts a raw event response to a LogEntry
+// tslint:disable-next-line:completed-docs
+export function _convertResponseToLogEntry(result: EventsResponseResult): LogEntry {
     return {
-        logIndex: parseInt(result.logIndex, radix),
-        transactionIndex: parseInt(result.logIndex, radix),
+        logIndex: hexToInt(result.logIndex),
+        transactionIndex: hexToInt(result.transactionIndex),
         transactionHash: result.transactionHash,
         blockHash: '',
-        blockNumber: parseInt(result.blockNumber, radix),
+        blockNumber: hexToInt(result.blockNumber),
         address: result.address,
         data: result.data,
         topics: result.topics,
     };
 }
 
-function tryToDecodeLogOrNoop(log: LogEntry): LogWithDecodedArgs<DecodedLogArgs> {
+// Decodes a LogEntry into a LogWithDecodedArgs
+// tslint:disable-next-line:completed-docs
+export function _decodeLogEntry(log: LogEntry): LogWithDecodedArgs<DecodedLogArgs> {
     const abiDecoder = new AbiDecoder([artifacts.Exchange.compilerOutput.abi]);
     const logWithDecodedArgs = abiDecoder.tryToDecodeLogOrNoop(log);
     // tslint:disable-next-line:no-unnecessary-type-assertion
@@ -51,4 +60,4 @@ function tryToDecodeLogOrNoop(log: LogEntry): LogWithDecodedArgs<DecodedLogArgs>
  * @param rawEventsResponse The raw events response from etherescan.io.
  * @returns Parsed and decoded events.
  */
-export const parseRawEventsResponse = R.pipe(R.map(convertResponseToLogEntry), R.map(tryToDecodeLogOrNoop));
+export const parseRawEventsResponse = R.pipe(R.map(_convertResponseToLogEntry), R.map(_decodeLogEntry));
diff --git a/packages/pipeline/src/index.ts b/packages/pipeline/src/index.ts
index c9254cc2a..baed6933e 100644
--- a/packages/pipeline/src/index.ts
+++ b/packages/pipeline/src/index.ts
@@ -3,6 +3,5 @@ import { Etherscan } from './data-sources/etherscan';
 const etherscan = new Etherscan(process.env.ETHERSCAN_API_KEY as string);
 
 (async () => {
-    const events = await etherscan.getContractEventsAsync('0x4f833a24e1f95d70f028921e27040ca56e09ab0b');
-    console.log(events);
+    await etherscan.getContractEventsAsync('0x4f833a24e1f95d70f028921e27040ca56e09ab0b');
 })();
diff --git a/packages/pipeline/test/data-sources/etherscan/events_test.ts b/packages/pipeline/test/data-sources/etherscan/events_test.ts
new file mode 100644
index 000000000..1151757f2
--- /dev/null
+++ b/packages/pipeline/test/data-sources/etherscan/events_test.ts
@@ -0,0 +1,88 @@
+import { BigNumber } from '@0xproject/utils';
+import * as chai from 'chai';
+import { DecodedLogArgs, LogEntry, LogWithDecodedArgs } from 'ethereum-types';
+import 'mocha';
+
+import {
+    _convertResponseToLogEntry,
+    _decodeLogEntry,
+    EventsResponseResult,
+} from '../../../src/data-sources/etherscan/events';
+import { chaiSetup } from '../../utils/chai_setup';
+
+chaiSetup.configure();
+const expect = chai.expect;
+
+describe('etherscan#events', () => {
+    describe('_convertResponseToLogEntry', () => {
+        it('converts EventsResponseResult to LogEntry', () => {
+            const input: EventsResponseResult = {
+                address: '0x4f833a24e1f95d70f028921e27040ca56e09ab0b',
+                topics: [
+                    '0x82af639571738f4ebd4268fb0363d8957ebe1bbb9e78dba5ebd69eed39b154f0',
+                    '0x00000000000000000000000067032ef7be8fa07c4335d0134099db0f3875e930',
+                    '0x0000000000000000000000000000000000000000000000000000000000000000',
+                ],
+                data: '0x00000000000000000000000000000000000000000000000000000165f2d3f94d',
+                blockNumber: '0x61127b',
+                timeStamp: '0x5ba2878e',
+                gasPrice: '0x1a13b8600',
+                gasUsed: '0xd9dc',
+                logIndex: '0x63',
+                transactionHash: '0xa3f71931ddab6e758b9d1755b2715b376759f49f23fff60755f7e073367d61b5',
+                transactionIndex: '0x35',
+            };
+            const expected: LogEntry = {
+                logIndex: 99,
+                transactionIndex: 53,
+                transactionHash: input.transactionHash,
+                blockHash: '',
+                blockNumber: 6361723,
+                address: input.address,
+                data: input.data,
+                topics: input.topics,
+            };
+            const actual = _convertResponseToLogEntry(input);
+            expect(actual).deep.equal(expected);
+        });
+    });
+    describe('_decodeLogEntry', () => {
+        it('decodes LogEntry into LogWithDecodedArgs', () => {
+            const input: LogEntry = {
+                logIndex: 96,
+                transactionIndex: 52,
+                transactionHash: '0x02b59043e9b38b430c8c66abe67ab4a9e5509def8f8552b54231e88db1839831',
+                blockHash: '',
+                blockNumber: 6361723,
+                address: '0x4f833a24e1f95d70f028921e27040ca56e09ab0b',
+                data:
+                    '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',
+                topics: [
+                    '0x0bcc4c97732e47d9946f229edb95f5b6323f601300e4690de719993f3c371129',
+                    '0x0000000000000000000000003f7f832abb3be28442c0e48b7222e02b322c78f3',
+                    '0x000000000000000000000000a258b39954cef5cb142fd567a46cddb31a670124',
+                    '0x523404b4e6f847d9aefcf5be024be396449b4635590291fd7a28a8c940843858',
+                ],
+            };
+            const expected: LogWithDecodedArgs<DecodedLogArgs> = {
+                ...input,
+                event: 'Fill',
+                args: {
+                    makerAddress: '0x3f7f832abb3be28442c0e48b7222e02b322c78f3',
+                    feeRecipientAddress: '0xa258b39954cef5cb142fd567a46cddb31a670124',
+                    takerAddress: '0x67032ef7be8fa07c4335d0134099db0f3875e930',
+                    senderAddress: '0x67032ef7be8fa07c4335d0134099db0f3875e930',
+                    makerAssetFilledAmount: new BigNumber('100000000000'),
+                    takerAssetFilledAmount: new BigNumber('330000000'),
+                    makerFeePaid: new BigNumber('0'),
+                    takerFeePaid: new BigNumber('0'),
+                    orderHash: '0x523404b4e6f847d9aefcf5be024be396449b4635590291fd7a28a8c940843858',
+                    makerAssetData: '0xf47261b0000000000000000000000000e41d2489571d322189246dafa5ebde1f4699f498',
+                    takerAssetData: '0xf47261b0000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2',
+                },
+            };
+            const actual = _decodeLogEntry(input);
+            expect(actual).deep.equal(expected);
+        });
+    });
+});
diff --git a/packages/pipeline/test/utils/chai_setup.ts b/packages/pipeline/test/utils/chai_setup.ts
new file mode 100644
index 000000000..1a8733093
--- /dev/null
+++ b/packages/pipeline/test/utils/chai_setup.ts
@@ -0,0 +1,13 @@
+import * as chai from 'chai';
+import chaiAsPromised = require('chai-as-promised');
+import ChaiBigNumber = require('chai-bignumber');
+import * as dirtyChai from 'dirty-chai';
+
+export const chaiSetup = {
+    configure(): void {
+        chai.config.includeStack = true;
+        chai.use(ChaiBigNumber());
+        chai.use(dirtyChai);
+        chai.use(chaiAsPromised);
+    },
+};