Add tests for message and conversation models

Closes #218

test/models/messages_test.js

@@ -92,5 +92,29 @@
             assert(firstTimestamp < secondTimestamp);
         });
 
+        it('checks if is incoming message', function() {
+            var messages = new Whisper.MessageCollection();
+            var message = messages.add(attributes);
+            assert.notOk(message.isIncoming());
+            message = messages.add({type: 'incoming'});
+            assert.ok(message.isIncoming());
+        });
+        
+        it('checks if is outgoing message', function() {
+            var messages = new Whisper.MessageCollection();
+            var message = messages.add(attributes);
+            assert.ok(message.isOutgoing());
+            message = messages.add({type: 'incoming'});
+            assert.notOk(message.isOutgoing());
+        });
+
+        it('checks if is group update', function() {
+            var messages = new Whisper.MessageCollection();
+            var message = messages.add(attributes);
+            assert.notOk(message.isGroupUpdate());
+
+            message = messages.add({group_update: true});
+            assert.ok(message.isGroupUpdate());
+        });
     });
 })();