public void RemoveCourse()
{
School mySchool = new School();
Course math = new Course();
Course OOP = new Course();
mySchool.AddCourse(math);
mySchool.AddCourse(OOP);
mySchool.RemoveCourse(math);
Assert.IsTrue(mySchool.Courses.Count == 1);
}
public void RemoveNullCourse()
{
School mySchool = new School();
mySchool.RemoveCourse(null);
}