Add a function to init token balances

packages/0x.js/test/utils/fill_scenarios.ts

@@ -1,10 +1,15 @@
+import {Web3Wrapper} from '@0xproject/web3-wrapper';
 import BigNumber from 'bignumber.js';
 
 import {SignedOrder, Token, ZeroEx} from '../../src';
+import {artifacts} from '../../src/artifacts';
+import {DummyTokenContract} from '../../src/contract_wrappers/generated/dummy_token';
 import {orderFactory} from '../utils/order_factory';
 
 import {constants} from './constants';
 
+const INITIAL_COINBASE_TOKEN_SUPPLY_IN_UNITS = new BigNumber(100);
+
 export class FillScenarios {
     private zeroEx: ZeroEx;
     private userAddresses: string[];
@@ -21,6 +26,26 @@ export class FillScenarios {
         this.zrxTokenAddress = zrxTokenAddress;
         this.exchangeContractAddress = exchangeContractAddress;
     }
+    public async initTokenBalancesAsync() {
+        const web3Wrapper = (this.zeroEx as any)._web3Wrapper as Web3Wrapper;
+        for (const token of this.tokens) {
+            if (token.symbol === 'WETH') {
+                // _.noop
+            } else if (token.symbol !== 'ZRX') {
+                const contractInstance = web3Wrapper.getContractInstance(
+                    artifacts.DummyTokenArtifact.abi, token.address,
+                );
+                const dummyToken = new DummyTokenContract(contractInstance, {});
+                const tokenSupply = ZeroEx.toBaseUnitAmount(INITIAL_COINBASE_TOKEN_SUPPLY_IN_UNITS, token.decimals);
+                const txHash = await dummyToken.setBalance.sendTransactionAsync(this.coinbase, tokenSupply, {
+                    from: this.coinbase,
+                });
+                await this.zeroEx.awaitTransactionMinedAsync(txHash);
+            } else {
+                // no-op
+            }
+        }
+    }
     public async createFillableSignedOrderAsync(makerTokenAddress: string, takerTokenAddress: string,
                                                 makerAddress: string, takerAddress: string,
                                                 fillableAmount: BigNumber,

packages/0x.js/test/utils/token_utils.ts

@@ -3,6 +3,7 @@ import * as _ from 'lodash';
 import {InternalZeroExError, Token} from '../../src/types';
 
 const PROTOCOL_TOKEN_SYMBOL = 'ZRX';
+const WETH_TOKEN_SYMBOL = 'WETH';
 
 export class TokenUtils {
     private tokens: Token[];
@@ -16,10 +17,10 @@ export class TokenUtils {
         }
         return zrxToken;
     }
-    public getNonProtocolTokens(): Token[] {
-        const nonProtocolTokens = _.filter(this.tokens, token => {
-            return token.symbol !== PROTOCOL_TOKEN_SYMBOL;
+    public getDummyTokens(): Token[] {
+        const dummyTokens = _.filter(this.tokens, token => {
+            return !_.includes([PROTOCOL_TOKEN_SYMBOL, WETH_TOKEN_SYMBOL], token.symbol);
         });
-        return nonProtocolTokens;
+        return dummyTokens;
     }
 }