Rx\Subject\BehaviorSubjectTest::it_throws_when_subscribing_to_a_disposed_subject PHP Method

    public function it_throws_when_subscribing_to_a_disposed_subject()
    {
        $subject = new BehaviorSubject();
        $subject->dispose();
        $observer = $this->createMock('Rx\\ObserverInterface');
        $subject->subscribe($observer);
    }