function testMapPropertyToField() { $course = new CourseForTest(); $this->assertEqual('lectures', $course->mapFieldToProperty('course_id')); $this->assertNull($course->mapFieldToProperty('blah')); $lecture = new LectureForTest(); $this->assertEqual('course', $lecture->mapFieldToProperty('course_id')); $this->assertNull($lecture->mapFieldToProperty('blah')); }