Rx\Subject\BehaviorSubjectTest::it_returns_false_if_an_observer_is_not_subscribed PHP Method

    public function it_returns_false_if_an_observer_is_not_subscribed()
    {
        $subject = new BehaviorSubject();
        $observer = $this->createMock('Rx\\ObserverInterface');
        $this->assertFalse($subject->removeObserver($observer));
        $this->assertFalse($subject->hasObservers());
    }