6 files changed, 10 insertions, 14 deletions
diff --git a/packages/contracts/src/utils/exchange_wrapper.ts b/packages/contracts/src/utils/exchange_wrapper.ts
index 17445ff75..0d0977ab8 100644
--- a/packages/contracts/src/utils/exchange_wrapper.ts
+++ b/packages/contracts/src/utils/exchange_wrapper.ts
@@ -1,4 +1,4 @@
-import { TransactionReceiptWithDecodedLogs } from '@0xproject/types';
+import { Provider, TransactionReceiptWithDecodedLogs } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as _ from 'lodash';
@@ -14,9 +14,11 @@ import { AssetProxyId, OrderInfo, SignedOrder, SignedTransaction } from './types
 
 export class ExchangeWrapper {
     private _exchange: ExchangeContract;
+    private _web3Wrapper: Web3Wrapper;
     private _logDecoder: LogDecoder = new LogDecoder(constants.TESTRPC_NETWORK_ID);
-    constructor(exchangeContract: ExchangeContract) {
+    constructor(exchangeContract: ExchangeContract, provider: Provider) {
         this._exchange = exchangeContract;
+        this._web3Wrapper = new Web3Wrapper(provider);
     }
     public async fillOrderAsync(
         signedOrder: SignedOrder,
@@ -245,7 +247,7 @@ export class ExchangeWrapper {
         return tx;
     }
     private async _getTxWithDecodedExchangeLogsAsync(txHash: string): Promise<TransactionReceiptWithDecodedLogs> {
-        const tx = await Web3Wrapper.awaitTransactionMinedAsync(txHash, constants.AWAIT_TRANSACTION_MINED_MS);
+        const tx = await this._web3Wrapper.awaitTransactionMinedAsync(txHash, constants.AWAIT_TRANSACTION_MINED_MS);
         tx.logs = _.filter(tx.logs, log => log.address === this._exchange.address);
         tx.logs = _.map(tx.logs, log => this._logDecoder.decodeLogOrThrow(log));
         return tx;
diff --git a/packages/contracts/test/exchange/core.ts b/packages/contracts/test/exchange/core.ts
index a54ec7692..5a91f42d1 100644
--- a/packages/contracts/test/exchange/core.ts
+++ b/packages/contracts/test/exchange/core.ts
@@ -60,8 +60,6 @@ describe('Exchange core', () => {
     let defaultMakerAssetAddress: string;
     let defaultTakerAssetAddress: string;
 
-    let zeroEx: ZeroEx;
-
     before(async () => {
         await blockchainLifecycle.startAsync();
     });
@@ -92,11 +90,7 @@ describe('Exchange core', () => {
             txDefaults,
             assetProxyUtils.encodeERC20ProxyData(zrxToken.address),
         );
-        zeroEx = new ZeroEx(provider, {
-            exchangeContractAddress: exchange.address,
-            networkId: constants.TESTRPC_NETWORK_ID,
-        });
-        exchangeWrapper = new ExchangeWrapper(exchange);
+        exchangeWrapper = new ExchangeWrapper(exchange, provider);
         await exchangeWrapper.registerAssetProxyAsync(AssetProxyId.ERC20, erc20Proxy.address, owner);
         await exchangeWrapper.registerAssetProxyAsync(AssetProxyId.ERC721, erc721Proxy.address, owner);
 
diff --git a/packages/contracts/test/exchange/match_orders.ts b/packages/contracts/test/exchange/match_orders.ts
index 9f8f6db44..e732c90db 100644
--- a/packages/contracts/test/exchange/match_orders.ts
+++ b/packages/contracts/test/exchange/match_orders.ts
@@ -116,7 +116,7 @@ describe('matchOrders', () => {
             txDefaults,
             assetProxyUtils.encodeERC20ProxyData(zrxToken.address),
         );
-        exchangeWrapper = new ExchangeWrapper(exchange);
+        exchangeWrapper = new ExchangeWrapper(exchange, provider);
         await exchangeWrapper.registerAssetProxyAsync(AssetProxyId.ERC20, erc20Proxy.address, owner);
         await exchangeWrapper.registerAssetProxyAsync(AssetProxyId.ERC721, erc721Proxy.address, owner);
         // Authorize ERC20 and ERC721 trades by exchange
diff --git a/packages/contracts/test/exchange/transactions.ts b/packages/contracts/test/exchange/transactions.ts
index 42e2429bb..203c05e53 100644
--- a/packages/contracts/test/exchange/transactions.ts
+++ b/packages/contracts/test/exchange/transactions.ts
@@ -79,7 +79,7 @@ describe('Exchange transactions', () => {
             txDefaults,
             assetProxyUtils.encodeERC20ProxyData(zrxToken.address),
         );
-        exchangeWrapper = new ExchangeWrapper(exchange);
+        exchangeWrapper = new ExchangeWrapper(exchange, provider);
         await exchangeWrapper.registerAssetProxyAsync(AssetProxyId.ERC20, erc20Proxy.address, owner);
 
         await web3Wrapper.awaitTransactionMinedAsync(
diff --git a/packages/contracts/test/exchange/wrapper.ts b/packages/contracts/test/exchange/wrapper.ts
index 99f23a5db..39f861968 100644
--- a/packages/contracts/test/exchange/wrapper.ts
+++ b/packages/contracts/test/exchange/wrapper.ts
@@ -83,7 +83,7 @@ describe('Exchange wrappers', () => {
             txDefaults,
             assetProxyUtils.encodeERC20ProxyData(zrxToken.address),
         );
-        exchangeWrapper = new ExchangeWrapper(exchange);
+        exchangeWrapper = new ExchangeWrapper(exchange, provider);
         await exchangeWrapper.registerAssetProxyAsync(AssetProxyId.ERC20, erc20Proxy.address, owner);
         await exchangeWrapper.registerAssetProxyAsync(AssetProxyId.ERC721, erc721Proxy.address, owner);
 
diff --git a/packages/contracts/test/tutorials/arbitrage.ts b/packages/contracts/test/tutorials/arbitrage.ts
index 1a53871cd..e5787d5b8 100644
--- a/packages/contracts/test/tutorials/arbitrage.ts
+++ b/packages/contracts/test/tutorials/arbitrage.ts
@@ -115,7 +115,7 @@
 //             exchangeContractAddress: exchange.address,
 //             networkId: constants.TESTRPC_NETWORK_ID,
 //         });
-//         exWrapper = new ExchangeWrapper(exchange);
+//         exWrapper = new ExchangeWrapper(exchange, provider);
 
 //         makerTokenAmount = ZeroEx.toBaseUnitAmount(new BigNumber(1), 18);
 //         takerTokenAmount = makerTokenAmount;