Metabor\Observer\SubjectTest::testImplementsSubjectPartOfObserverPattern PHP Method

    public function testImplementsSubjectPartOfObserverPattern()
    {
        $subject = new Subject();
        $observerA = $this->getMockForAbstractClass('\\SplObserver');
        $observerA->expects($this->once())->method('update')->with($subject);
        $subject->attach($observerA);
        $observerB = $this->getMockForAbstractClass('\\SplObserver');
        $observerB->expects($this->never())->method('update')->with($subject);
        $subject->attach($observerB);
        $subject->detach($observerB);
        $subject->notify();
    }