function testCorrectUsageCrossRelations()
 {
     $program = new ProgramForTest();
     $program->setTitle('Program');
     $program->save();
     $course = new CourseForTest();
     $course->setProgram($program);
     $course->save();
     $lecture = new LectureForTest();
     $lecture->setCourse($course);
     $lecture->setCachedProgram($program);
     $lecture->save();
     try {
         $finded_lectures = $program->getCachedLectures()->find(array('join' => array('course')))->getArray();
     } catch (lmbException $e) {
         $this->assertTrue(false);
     }
 }