Metabor\Statemachine\Observer\SubjectHasUpdatedTest::testCollectAllUpdatedSubjects PHP Метод

    public function testCollectAllUpdatedSubjects()
    {
        $subject = new Subject();
        $observer = new SubjectHasUpdated();
        $subject->attach($observer);
        $this->assertNotContains($subject, $observer);
        $subject->notify();
        $this->assertContains($subject, $observer);
    }