6 files changed, 53 insertions, 21 deletions
diff --git a/packages/contracts/package.json b/packages/contracts/package.json
index be3ca3bc4..1c66a3b86 100644
--- a/packages/contracts/package.json
+++ b/packages/contracts/package.json
@@ -44,6 +44,8 @@
         "@0xproject/abi-gen": "^0.3.0",
         "@0xproject/dev-utils": "^0.4.2",
         "@0xproject/tslint-config": "^0.4.18",
+        "@0xproject/subproviders": "^0.10.1",
+        "@0xproject/sol-cov": "^0.0.11",
         "@types/lodash": "4.14.104",
         "@types/node": "^8.0.53",
         "@types/yargs": "^10.0.0",
diff --git a/packages/contracts/src/utils/coverage.ts b/packages/contracts/src/utils/coverage.ts
new file mode 100644
index 000000000..a37939464
--- /dev/null
+++ b/packages/contracts/src/utils/coverage.ts
@@ -0,0 +1,21 @@
+import { devConstants } from '@0xproject/dev-utils';
+import { CoverageSubprovider, SolCompilerArtifactAdapter } from '@0xproject/sol-cov';
+import * as fs from 'fs';
+import * as _ from 'lodash';
+
+let coverageSubprovider: CoverageSubprovider;
+
+export const coverage = {
+    getCoverageSubproviderSingleton(): CoverageSubprovider {
+        if (_.isUndefined(coverageSubprovider)) {
+            coverageSubprovider = coverage._getCoverageSubprovider();
+        }
+        return coverageSubprovider;
+    },
+    _getCoverageSubprovider(): CoverageSubprovider {
+        const defaultFromAddress = devConstants.TESTRPC_FIRST_ADDRESS;
+        const solCompilerArtifactAdapter = new SolCompilerArtifactAdapter();
+        const subprovider = new CoverageSubprovider(solCompilerArtifactAdapter, defaultFromAddress);
+        return subprovider;
+    },
+};
diff --git a/packages/contracts/test/utils/match_order_tester.ts b/packages/contracts/src/utils/match_order_tester.ts
index 43196728c..30039937f 100644
--- a/packages/contracts/test/utils/match_order_tester.ts
+++ b/packages/contracts/src/utils/match_order_tester.ts
@@ -5,24 +5,24 @@ import * as chai from 'chai';
 import ethUtil = require('ethereumjs-util');
 import * as _ from 'lodash';
 
-import { DummyERC20TokenContract } from '../../src/contract_wrappers/generated/dummy_e_r_c20_token';
-import { DummyERC721TokenContract } from '../../src/contract_wrappers/generated/dummy_e_r_c721_token';
-import { ERC20ProxyContract } from '../../src/contract_wrappers/generated/e_r_c20_proxy';
-import { ERC721ProxyContract } from '../../src/contract_wrappers/generated/e_r_c721_proxy';
+import { DummyERC20TokenContract } from '../contract_wrappers/generated/dummy_e_r_c20_token';
+import { DummyERC721TokenContract } from '../contract_wrappers/generated/dummy_e_r_c721_token';
+import { ERC20ProxyContract } from '../contract_wrappers/generated/e_r_c20_proxy';
+import { ERC721ProxyContract } from '../contract_wrappers/generated/e_r_c721_proxy';
 import {
     CancelContractEventArgs,
     ExchangeContract,
     FillContractEventArgs,
-} from '../../src/contract_wrappers/generated/exchange';
-import { assetProxyUtils } from '../../src/utils/asset_proxy_utils';
-import { chaiSetup } from '../../src/utils/chai_setup';
-import { constants } from '../../src/utils/constants';
-import { crypto } from '../../src/utils/crypto';
-import { ERC20Wrapper } from '../../src/utils/erc20_wrapper';
-import { ERC721Wrapper } from '../../src/utils/erc721_wrapper';
-import { ExchangeWrapper } from '../../src/utils/exchange_wrapper';
-import { OrderFactory } from '../../src/utils/order_factory';
-import { orderUtils } from '../../src/utils/order_utils';
+} from '../contract_wrappers/generated/exchange';
+import { assetProxyUtils } from '../utils/asset_proxy_utils';
+import { chaiSetup } from '../utils/chai_setup';
+import { constants } from '../utils/constants';
+import { crypto } from '../utils/crypto';
+import { ERC20Wrapper } from '../utils/erc20_wrapper';
+import { ERC721Wrapper } from '../utils/erc721_wrapper';
+import { ExchangeWrapper } from '../utils/exchange_wrapper';
+import { OrderFactory } from '../utils/order_factory';
+import { orderUtils } from '../utils/order_utils';
 import {
     AssetProxyId,
     ContractName,
@@ -31,8 +31,8 @@ import {
     ExchangeStatus,
     SignedOrder,
     TransferAmountsByMatchOrders as TransferAmounts,
-} from '../../src/utils/types';
-import { provider, web3Wrapper } from '../../src/utils/web3_wrapper';
+} from '../utils/types';
+import { provider, web3Wrapper } from '../utils/web3_wrapper';
 
 chaiSetup.configure();
 const expect = chai.expect;
diff --git a/packages/contracts/src/utils/web3_wrapper.ts b/packages/contracts/src/utils/web3_wrapper.ts
index ed1c488a2..02595506b 100644
--- a/packages/contracts/src/utils/web3_wrapper.ts
+++ b/packages/contracts/src/utils/web3_wrapper.ts
@@ -1,12 +1,19 @@
-import { devConstants, web3Factory } from '@0xproject/dev-utils';
+import { devConstants, env, EnvVars, web3Factory } from '@0xproject/dev-utils';
+import { prependSubprovider } from '@0xproject/subproviders';
 import { Provider } from '@0xproject/types';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 
+import { coverage } from './coverage';
+
 export const txDefaults = {
     from: devConstants.TESTRPC_FIRST_ADDRESS,
     gas: devConstants.GAS_ESTIMATE,
 };
 const providerConfigs = { shouldUseInProcessGanache: true };
-export const web3 = web3Factory.create(providerConfigs);
-export const provider = web3.currentProvider;
+export const provider = web3Factory.getRpcProvider(providerConfigs);
+const isCoverageEnabled = env.parseBoolean(EnvVars.SolidityCoverage);
+if (isCoverageEnabled) {
+    const coverageSubprovider = coverage.getCoverageSubproviderSingleton();
+    prependSubprovider(provider, coverageSubprovider);
+}
 export const web3Wrapper = new Web3Wrapper(provider);
diff --git a/packages/contracts/test/exchange/match_orders.ts b/packages/contracts/test/exchange/match_orders.ts
index e732c90db..8a3c91520 100644
--- a/packages/contracts/test/exchange/match_orders.ts
+++ b/packages/contracts/test/exchange/match_orders.ts
@@ -37,7 +37,7 @@ import {
 } from '../../src/utils/types';
 import { provider, txDefaults, web3Wrapper } from '../../src/utils/web3_wrapper';
 
-import { MatchOrderTester } from '../utils/match_order_tester';
+import { MatchOrderTester } from '../../src/utils/match_order_tester';
 
 chaiSetup.configure();
 const expect = chai.expect;
diff --git a/packages/contracts/test/global_hooks.ts b/packages/contracts/test/global_hooks.ts
index 089521d94..8b48b030d 100644
--- a/packages/contracts/test/global_hooks.ts
+++ b/packages/contracts/test/global_hooks.ts
@@ -1,4 +1,6 @@
-import { coverage, env, EnvVars } from '@0xproject/dev-utils';
+import { env, EnvVars } from '@0xproject/dev-utils';
+
+import { coverage } from '../src/utils/coverage';
 
 after('generate coverage report', async () => {
     if (env.parseBoolean(EnvVars.SolidityCoverage)) {