Fix and cleanup tests

packages/contracts/src/utils/address_utils.ts

@@ -0,0 +1,12 @@
+import { ZeroEx } from '0x.js';
+
+import { crypto } from './crypto';
+
+export const addressUtils = {
+    generatePseudoRandomAddress(): string {
+        const randomBigNum = ZeroEx.generatePseudoRandomSalt();
+        const randomBuff = crypto.solSHA3([randomBigNum]);
+        const randomAddress = `0x${randomBuff.slice(0, 20).toString('hex')}`;
+        return randomAddress;
+    },
+};

packages/contracts/src/utils/order_factory.ts

@@ -4,7 +4,7 @@ import * as _ from 'lodash';
 
 import { orderUtils } from './order_utils';
 import { signingUtils } from './signing_utils';
-import { DefaultOrderParams, SignatureType, SignedOrder, UnsignedOrder } from './types';
+import { SignatureType, SignedOrder, UnsignedOrder } from './types';
 
 export class OrderFactory {
     private _defaultOrderParams: Partial<UnsignedOrder>;