Custom event dispatch fix (#90)

* fix error in Events.dispatch method

* add tests for events dispatch

Author: Stanislav

src/backendless.js

@@ -4705,15 +4705,14 @@
 
     dispatchSync: synchronized('_dispatch'),
 
-    _dispatch: function(eventname, eventArgs, Async) {
+    _dispatch: function(eventname, eventArgs) {
       if (!eventname || !Utils.isString(eventname)) {
         throw new Error('Event Name must be provided and must be not an empty STRING!');
       }
 
-      eventArgs = Utils.isObject(eventArgs) ? eventArgs : {};
+      eventArgs = (Utils.isObject(eventArgs) && !(eventArgs instanceof Async)) ? eventArgs : {};
 
-      var responder = Utils.extractResponder(arguments),
-          isAsync   = responder != null;
+      var responder = Utils.extractResponder(arguments);
 
       if (responder) {
         responder = Utils.wrapAsync(responder);
@@ -4725,7 +4724,7 @@
         method      : 'POST',
         url         : this.restUrl + '/' + eventname,
         data        : JSON.stringify(eventArgs),
-        isAsync     : isAsync,
+        isAsync     : responder != null,
         asyncHandler: responder
       });
     }

test/e2e/specs/events.js

@@ -0,0 +1,22 @@
+import '../helpers/global'
+import sandbox from '../helpers/sandbox'
+import Backendless from '../../../src/backendless'
+
+describe('Backendless.Events', function() {
+
+  sandbox.forSuite()
+
+  it('dispatch event with event arguments', function() {
+    expect(Backendless.Events.dispatch('customEvent', {})).to.eventually.be.empty
+  })
+
+  it('dispatch event without event arguments', function() {
+    expect(Backendless.Events.dispatch('customEvent')).to.eventually.be.empty
+  })
+
+  it('dispatch event without event name', function() {
+    expect(Backendless.Events.dispatch()).to.eventually.be
+      .rejectedWith(Error, 'Event Name must be provided and must be not an empty STRING!')
+  })
+
+})