public void GPACalculationPerformsAverageCalculation()
{
var underTest = new Student(1);
underTest.RecordClassGrade(Grade.C);
Assert.Equal((double)Grade.C, underTest.GradePointAverage);
underTest.RecordClassGrade(Grade.C);
Assert.Equal((double)Grade.C, underTest.GradePointAverage);
underTest.RecordClassGrade(Grade.A);
Assert.Equal((double)8/3, underTest.GradePointAverage);
underTest.RecordClassGrade(Grade.A);
Assert.Equal((double)Grade.B, underTest.GradePointAverage);
}
public void AfterOneClassGPAReflectsSingleClass()
{
var underTest = new Student(1);
underTest.RecordClassGrade(Grade.C);
Assert.Equal((double)Grade.C, underTest.GradePointAverage);
}
public void AverageOfStudentsGetsComputed()
{
var classoffering = new ClassOffering(new Teacher(1), (s1, s2) => 0);
var s = new Student(1);
s.RecordClassGrade(Grade.A);
classoffering.EnrollStudent(s);
s = new Student(2);
s.RecordClassGrade(Grade.C);
classoffering.EnrollStudent(s);
var gpa = classoffering.AverageGPAForStudents();
Assert.Equal(3.0, gpa);
}