use callbacks instead of exiting

dapps/templates/demo/test/simple_storage_spec.js

@@ -1,4 +1,4 @@
-/*global contract, config, it, assert*/
+/*global contract, config, it, assert, web3*/
 const SimpleStorage = require('Embark/contracts/SimpleStorage');
 
 let accounts;
@@ -17,7 +17,7 @@ config({
     }
   }
 }, (_err, web3_accounts) => {
-  accounts = web3_accounts
+  accounts = web3_accounts;
 });
 
 contract("SimpleStorage", function () {

packages/embark-blockchain-connector/src/index.js

@@ -64,7 +64,11 @@ class BlockchainConnector {
     embark.registerActionForEvent("contracts:deploy:afterAll", this.subscribeToContractEvents.bind(this));
 
     if (!this.web3) {
-      this.initWeb3();
+      this.initWeb3(err => {
+        if (err) {
+          this.logger.error(__('Error initiating Web3 provider'), err.message || err);
+        }
+      });
     } else {
       this.isWeb3Ready = true;
     }
@@ -177,7 +181,10 @@ class BlockchainConnector {
       if (err) {
         return self.logger.error(err);
       }
-      self.provider.startWeb3Provider(async () => {
+      self.provider.startWeb3Provider(async (err) => {
+        if (err) {
+          return cb(err);
+        }
         try {
           const blockNumber = await self.web3.eth.getBlockNumber();
           await self.web3.eth.getBlock(blockNumber);

packages/embark-blockchain-connector/src/provider.js

@@ -17,6 +17,7 @@ class Provider {
     this.isDev = options.isDev;
     this.events = options.events;
     this.nonceCache = {};
+    this.accounts = [];
 
     this.events.setCommandHandler("blockchain:provider:contract:accounts:get", cb => {
       const accounts = this.accounts.map(a => a.address || a);
@@ -80,8 +81,8 @@ class Provider {
         accounts = accounts.concat(self.blockchainAccounts);
 
         self.accounts = AccountParser.parseAccountsConfig(self.accountsConfig, self.web3, dappPath(), self.logger, accounts);
-      } catch (_e) {
-        process.exit(1);
+      } catch (e) {
+        return callback(e);
       }
 
       if (!self.accounts.length) {

packages/embark-blockchain-process/src/blockchain.js

@@ -166,7 +166,8 @@ Blockchain.prototype.setupProxy = async function () {
   let addresses;
   try {
     addresses = AccountParser.parseAccountsConfig(this.userConfig.accounts, false, dappPath(), this.logger);
-  } catch (_e) {
+  } catch (e) {
+    this.logger.error(e.message);
     process.exit(1);
   }
 

packages/embark-blockchain-process/src/simulator.js

@@ -45,7 +45,8 @@ export class Simulator {
       let parsedAccounts;
       try {
         parsedAccounts = AccountParser.parseAccountsConfig(simulatorAccounts, web3, dappPath(), this.logger);
-      } catch (_e) {
+      } catch (e) {
+        this.logger.error(e.message);
         process.exit(1);
       }
       parsedAccounts.forEach((account) => {

packages/embark-test-runner/src/test.js

@@ -159,8 +159,8 @@ class Test {
       if (accounts) {
         try {
           self.simOptions.accounts = AccountParser.parseAccountsConfig(accounts, web3, this.dappPath);
-        } catch (_e) {
-          process.exit(1);
+        } catch (e) {
+         return callback(e);
         }
       } else {
         self.simOptions.accounts = null;
@@ -255,6 +255,7 @@ class Test {
       }
     ], (err, accounts) => {
       if (err) {
+        self.logger.error(err.message || err);
         // TODO Do not exit in case of not a normal run (eg after a change)
         if (!self.options.inProcess) process.exit(1);
       }