Neos\Flow\Persistence\Generic\PersistenceManager::tearDown PHP Method

    public function tearDown()
    {
        if (method_exists($this->backend, 'tearDown')) {
            $this->backend->tearDown();
        }
    }

 /**
  * @test
  */
 public function tearDownWithBackendSupportingTearDownDelegatesCallToBackend()
 {
     $methods = array_merge(get_class_methods(Generic\Backend\BackendInterface::class), ['tearDown']);
     $mockBackend = $this->getMockBuilder(Generic\Backend\BackendInterface::class)->setMethods($methods)->getMock();
     $mockBackend->expects($this->once())->method('tearDown');
     $persistenceManager = new Generic\PersistenceManager();
     $persistenceManager->injectBackend($mockBackend);
     $persistenceManager->tearDown();
 }