[FIX] handle websocket errors in browsers

emit not RippledNotInitializedError if server doesn't have any
completed ledgers on connect

test/setup-api-web.js

@@ -1,5 +1,5 @@
 /* eslint-disable max-nested-callbacks */
-'use strict';
+'use strict'; // eslint-disable-line 
 
 const {RippleAPI, RippleAPIBroadcast} = require('ripple-api');
 const ledgerClosed = require('./fixtures/rippled/ledger-close');
@@ -8,12 +8,22 @@ const port = 34371;
 const baseUrl = 'ws://testripple.circleci.com:';
 
 function setup(port_ = port) {
-  return new Promise((resolve, reject) => {
-    this.api = new RippleAPI({server: baseUrl + port_});
-    this.api.connect().then(() => {
-      this.api.once('ledger', () => resolve());
-      this.api.connection._ws.emit('message', JSON.stringify(ledgerClosed));
-    }).catch(reject);
+  const tapi = new RippleAPI({server: baseUrl + port_});
+  return tapi.connect().then(() => {
+    return tapi.connection.request({
+      command: 'test_command',
+      data: {openOnOtherPort: true}
+    });
+  }).then(got => {
+    return new Promise((resolve, reject) => {
+      this.api = new RippleAPI({server: baseUrl + got.port});
+      this.api.connect().then(() => {
+        this.api.once('ledger', () => resolve());
+        this.api.connection._ws.emit('message', JSON.stringify(ledgerClosed));
+      }).catch(reject);
+    });
+  }).then(() => {
+    return tapi.disconnect();
   });
 }
 
@@ -33,6 +43,7 @@ function teardown() {
   if (this.api.isConnected()) {
     return this.api.disconnect();
   }
+  return undefined;
 }
 
 module.exports = {