public void ComputeLowestGrade()
{
GradeBook book = new GradeBook();
book.AddGrade(10);
book.AddGrade(90);
GradeStatistics result = book.ComputeSatistics();
Assert.AreEqual(10, result.LowestGrade);
}
public void ComputeAverageGrade()
{
GradeBook book = new GradeBook();
book.AddGrade(91);
book.AddGrade(89.5f);
book.AddGrade(75);
GradeStatistics result = book.ComputeSatistics();
Assert.AreEqual(85.16, result.AverageGrade, 0.01);
}