protected function setUp()
 {
     $this->factory = $this->prophesize(TaskBuilderFactoryInterface::class);
     $this->taskRepository = $this->prophesize(TaskRepositoryInterface::class);
     $this->taskExecutionRepository = $this->prophesize(TaskExecutionRepositoryInterface::class);
     $this->eventDispatcher = $this->prophesize(EventDispatcherInterface::class);
     $this->taskScheduler = new TaskScheduler($this->factory->reveal(), $this->taskRepository->reveal(), $this->taskExecutionRepository->reveal(), $this->eventDispatcher->reveal());
 }