Added tests for for decoding log arguments when artifact dependencies are included/excluded

contracts/utils/test/log_decoding.ts

@@ -0,0 +1,70 @@
+import { chaiSetup, provider, txDefaults, web3Wrapper } from '@0x/contracts-test-utils';
+import { BlockchainLifecycle } from '@0x/dev-utils';
+import { BigNumber } from '@0x/utils';
+import * as chai from 'chai';
+import { DecodedLogArgs, LogWithDecodedArgs } from 'ethereum-types';
+
+import { artifacts, TestLogDecodingContract } from '../src';
+
+chaiSetup.configure();
+const expect = chai.expect;
+
+const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
+
+describe.only('TestLogDecoding', () => {
+    let testLogDecodingWithDependencies: TestLogDecodingContract;
+    let testLogDecodingDeployedWithoutDependencies: TestLogDecodingContract;
+    const expectedEvent = {
+        foo: new BigNumber(256),
+        bar: "0x1234",
+        car: "4321",
+    };
+    const expectedDownstreamEvent = {
+        lorem: new BigNumber(256),
+        ipsum: "4321",
+    }
+    const emptyDependencyList = {};
+
+    before(async () => {
+        testLogDecodingDeployedWithoutDependencies = await TestLogDecodingContract.deployFrom0xArtifactAsync(
+            artifacts.TestLogDecoding,
+            provider,
+            txDefaults,
+            emptyDependencyList
+        );
+        testLogDecodingWithDependencies = await TestLogDecodingContract.deployFrom0xArtifactAsync(
+            artifacts.TestLogDecoding,
+            provider,
+            txDefaults,
+            artifacts
+        );
+    });
+    beforeEach(async () => {
+        await blockchainLifecycle.startAsync();
+    });
+    afterEach(async () => {
+        await blockchainLifecycle.revertAsync();
+    });
+
+    describe('Decoding Log Arguments', () => {
+        it('should decode locally emitted event args when no dependencies are passed into wrapper', async () => {
+            const txReceipt = await testLogDecodingDeployedWithoutDependencies.emitEvent.awaitTransactionSuccessAsync();
+            expect(txReceipt.logs.length).to.be.equal(1);
+            expect((txReceipt.logs[0] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.deep.equal(expectedEvent);
+        });
+        it('should not event args when no dependencies are passed into wrapper', async () => {
+            const txReceipt = await testLogDecodingDeployedWithoutDependencies.emitEventDownstream.awaitTransactionSuccessAsync();
+            expect((txReceipt.logs[0] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.undefined();//(emptyArgs);
+        });
+        it('should decode locally emitted event args when dependencies are passed into wrapper', async () => {
+            const txReceipt = await testLogDecodingWithDependencies.emitEvent.awaitTransactionSuccessAsync();
+            expect(txReceipt.logs.length).to.be.equal(1);
+            expect((txReceipt.logs[0] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.deep.equal(expectedEvent);
+        });
+        it('should decode downstream event args when dependencies are passed into wrapper', async () => {
+            const txReceipt = await testLogDecodingWithDependencies.emitEventDownstream.awaitTransactionSuccessAsync();
+            expect(txReceipt.logs.length).to.be.equal(1);
+            expect((txReceipt.logs[0] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.deep.equal(expectedDownstreamEvent);
+        });
+    });
+});