public void TestSchoolRemoveExistantCourseShouldNotThrow()
        {
            var course = new Course("C#");
            var school = new School("TA");
            school.AddCourse(course);
            school.RemoveCourse(course);

            Assert.IsFalse(school.Courses.Contains(course));
        }
 public void TestSchoolRemoveNullCourseShouldThrow()
 {
     var school = new School("TA");
     Course course = null;
     school.RemoveCourse(course);
 }
 public void TestSchoolRemoveNotExistantCourseShouldThrow()
 {
     var course = new Course("C#");
     var school = new School("TA");
     school.RemoveCourse(course);
 }