Don't start the provider by default

contracts/core/test/global_hooks.ts

@@ -1,7 +1,9 @@
 import { env, EnvVars } from '@0x/dev-utils';
 
-import { coverage, profiler } from '@0x/contracts-test-utils';
-
+import { coverage, profiler, provider } from '@0x/contracts-test-utils';
+before('start web3 provider', () => {
+    provider.start();
+});
 after('generate coverage report', async () => {
     if (env.parseBoolean(EnvVars.SolidityCoverage)) {
         const coverageSubprovider = coverage.getCoverageSubproviderSingleton();
@@ -11,4 +13,5 @@ after('generate coverage report', async () => {
         const profilerSubprovider = profiler.getProfilerSubproviderSingleton();
         await profilerSubprovider.writeProfilerOutputAsync();
     }
+    provider.stop();
 });

contracts/multisig/test/global_hooks.ts

@@ -0,0 +1,19 @@
+import { env, EnvVars } from '@0x/dev-utils';
+
+import { coverage, profiler, provider } from '@0x/contracts-test-utils';
+
+before('start web3 provider engine', () => {
+    provider.start();
+});
+
+after('generate coverage report', async () => {
+    if (env.parseBoolean(EnvVars.SolidityCoverage)) {
+        const coverageSubprovider = coverage.getCoverageSubproviderSingleton();
+        await coverageSubprovider.writeCoverageAsync();
+    }
+    if (env.parseBoolean(EnvVars.SolidityProfiler)) {
+        const profilerSubprovider = profiler.getProfilerSubproviderSingleton();
+        await profilerSubprovider.writeProfilerOutputAsync();
+    }
+    provider.stop();
+});

contracts/test-utils/CHANGELOG.json

@@ -1 +0,0 @@
-[]

contracts/test-utils/src/web3_wrapper.ts

@@ -48,6 +48,7 @@ const ganacheConfigs = {
 const providerConfigs = testProvider === ProviderType.Ganache ? ganacheConfigs : gethConfigs;
 
 export const provider: Web3ProviderEngine = web3Factory.getRpcProvider(providerConfigs);
+provider.stop();
 const isCoverageEnabled = env.parseBoolean(EnvVars.SolidityCoverage);
 const isProfilerEnabled = env.parseBoolean(EnvVars.SolidityProfiler);
 const isRevertTraceEnabled = env.parseBoolean(EnvVars.SolidityRevertTrace);