Added some SettingsManager tests

Author: niemyjski

src/configuration/SettingsManager-spec.ts

@@ -0,0 +1,15 @@
+import { Configuration } from './Configuration';
+import { EventPluginContext } from '../plugins/EventPluginContext';
+import { SettingsManager } from './SettingsManager';
+
+describe('SettingsManager', () => {
+  it('should call changed handler', (done) => {
+    SettingsManager.onChanged((configuration:Configuration) => {
+      expect(configuration.settings).toBeDefined();
+      done();
+    });
+    
+    var config = new Configuration('LhhP1C9gijpSKCslHHCvwdSIz298twx271n1l6xw');
+    SettingsManager.applySavedServerSettings(config);
+  }, 250);
+});