PopTest\Event\EventTest::testDetachEvent PHP Метод

    public function testDetachEvent()
    {
        $func = function () {
            return 'Hello World';
        };
        $e = new Manager();
        $e->attach('pre', $func, 2);
        $e->detach('pre', $func);
        $this->assertEquals(0, count($e->get('pre')));
    }