Sokil\Mongo\DocumentEventTest::testCancelOperation_BeforeSave PHP Method

    public function testCancelOperation_BeforeSave()
    {
        $this->collection->delete()->createDocument(array('field' => 'value'))->onBeforeSave(function (\Sokil\Mongo\Event $event, $eventName, $dispatcher) {
            $event->cancel();
        })->save();
        $this->assertEquals(0, $this->collection->count());
    }