public function testCount() { $this->if($invoker = new testedClass(uniqid()))->then->sizeof($invoker)->isZero()->if($invoker->setClosure(function () { }))->then->sizeof($invoker)->isEqualTo(1)->if($invoker->doesNothing())->then->sizeof($invoker)->isEqualTo(1)->if($invoker->setClosure(function () { }, 1))->then->sizeof($invoker)->isEqualTo(2); }