public function testCreateWithSourceSuccess()
 {
     $this->specify('create a status instance with source component', function () {
         $src = Yii::createObject(['class' => WorkflowFileSource::className()]);
         $start = new Status(['id' => 'draft', 'workflowId' => 'workflow1', 'source' => $src]);
         verify('a source component is available', $start->getSource())->notNull();
     });
 }