From 2004c0d7398a5e77d08e3b4d8030c0f22cb09cc8 Mon Sep 17 00:00:00 2001
From: Alex Browne <stephenalexbrowne@gmail.com>
Date: Fri, 1 Jun 2018 13:19:36 -0700
Subject: Add ability to quickly switch between Geth and Ganache by changing a
 const

---
 packages/contracts/src/utils/web3_wrapper.ts | 19 ++++++++++++++++---
 packages/dev-utils/src/web3_factory.ts       |  8 +++++++-
 2 files changed, 23 insertions(+), 4 deletions(-)

(limited to 'packages')

diff --git a/packages/contracts/src/utils/web3_wrapper.ts b/packages/contracts/src/utils/web3_wrapper.ts
index a89d7e8d0..bd582e841 100644
--- a/packages/contracts/src/utils/web3_wrapper.ts
+++ b/packages/contracts/src/utils/web3_wrapper.ts
@@ -5,14 +5,27 @@ import { Provider } from 'ethereum-types';
 
 import { coverage } from './coverage';
 
-export const txDefaults = {
+const useGeth = false;
+
+const ganacheTxDefaults = {
+    from: devConstants.TESTRPC_FIRST_ADDRESS,
+    gas: devConstants.GAS_LIMIT,
+};
+const gethTxDefaults = {
     from: devConstants.TESTRPC_FIRST_ADDRESS,
-    // gas: devConstants.GAS_LIMIT,
 };
-const providerConfigs = {
+export const txDefaults = useGeth ? gethTxDefaults : ganacheTxDefaults;
+
+const gethConfigs = {
     shouldUseInProcessGanache: false,
     rpcUrl: 'http://localhost:8501',
+    shouldUseFakeGasEstimate: false,
+};
+const ganacheConfigs = {
+    shouldUseInProcessGanache: true,
 };
+const providerConfigs = useGeth ? gethConfigs : ganacheConfigs;
+
 export const provider = web3Factory.getRpcProvider(providerConfigs);
 const isCoverageEnabled = env.parseBoolean(EnvVars.SolidityCoverage);
 if (isCoverageEnabled) {
diff --git a/packages/dev-utils/src/web3_factory.ts b/packages/dev-utils/src/web3_factory.ts
index d8379825a..25201228d 100644
--- a/packages/dev-utils/src/web3_factory.ts
+++ b/packages/dev-utils/src/web3_factory.ts
@@ -19,16 +19,22 @@ export interface Web3Config {
     hasAddresses?: boolean; // default: true
     shouldUseInProcessGanache?: boolean; // default: false
     rpcUrl?: string; // default: localhost:8545
+    shouldUseFakeGasEstimate?: boolean; // default: true
 }
 
 export const web3Factory = {
     getRpcProvider(config: Web3Config = {}): ProviderEngine {
         const provider = new ProviderEngine();
         const hasAddresses = _.isUndefined(config.hasAddresses) || config.hasAddresses;
+        config.shouldUseFakeGasEstimate =
+            _.isUndefined(config.shouldUseFakeGasEstimate) || config.shouldUseFakeGasEstimate;
         if (!hasAddresses) {
             provider.addProvider(new EmptyWalletSubprovider());
         }
-        // provider.addProvider(new FakeGasEstimateSubprovider(constants.GAS_LIMIT));
+
+        if (config.shouldUseFakeGasEstimate) {
+            provider.addProvider(new FakeGasEstimateSubprovider(constants.GAS_LIMIT));
+        }
         const logger = {
             log: (arg: any) => {
                 fs.appendFileSync('ganache.log', `${arg}\n`);
-- 
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