public void GivenAStudenHasGradesThenTheCalculatorShouldCalculateAverageCorrectly()
{
var student1 = new Student()
{
Naam = "Bozo"
};
var student2 = new Student()
{
Naam = "Victor"
};
float expectedAverageStudent1 = (5f + 10f) / 2;
float expectedAverageStudent2 = (8f + 5f) / 2;
var gradeCollection = new GradeCollection();
gradeCollection.AddGrade(CreateGrade(student1, 5f));
gradeCollection.AddGrade(CreateGrade(student1, 10f));
gradeCollection.AddGrade(CreateGrade(student2, 8f));
gradeCollection.AddGrade(CreateGrade(student2, 5f));
var actualAverageStudent1 = AverageCalculator.CalculateMeanAverage(gradeCollection.GetGradesForStudent(student1));
var actualAverageStudent2 = AverageCalculator.CalculateMeanAverage(gradeCollection.GetGradesForStudent(student2));
Assert.AreEqual(expectedAverageStudent1, actualAverageStudent1, 0.001f);
Assert.AreEqual(expectedAverageStudent2, actualAverageStudent2, 0.002f);
}
public void GivenTheSameGradeIsAddedTwiceToCollectionThenCollectionThrowsArgumentException()
{
GradeCollection collection = new GradeCollection();
var grade = CreateGrade();
collection.AddGrade(grade);
collection.AddGrade(grade);
}
private void BtnAddGrade_Click(object sender, EventArgs e)
{
float value;
try
{
if (float.TryParse(txtGrade.Text, out value))
{
Grade grade = new Grade()
{
Student = m_student
};
grade.SetScore(value);
m_gradeCollection.AddGrade(grade);
}
else
{
MessageBox.Show("Not a valid number");
}
}
catch (ArgumentException exception)
{
MessageBox.Show(exception.Message);
}
txtGrade.Clear();
}
public void GivenAddGradeCollectionHasGrade()
{
var gradeCollection = new GradeCollection();
var grade = CreateGrade();
Assert.AreEqual(0, gradeCollection.Count);
gradeCollection.AddGrade(grade);
Assert.AreEqual(1, gradeCollection.Count);
}
public void GivenClearCollectionThenGradeCollectionIsEmpty()
{
var grade = CreateGrade();
var gradeCollection = new GradeCollection();
Assert.AreEqual(0, gradeCollection.Count);
gradeCollection.AddGrade(grade);
Assert.AreEqual(1, gradeCollection.Count);
gradeCollection.Clear();
Assert.AreEqual(0, gradeCollection.Count);
}
public void GivenANullIsAddedToCollectionThenCollectionThrowsArgumentNullException()
{
GradeCollection collection = new GradeCollection();
collection.AddGrade(null);
}
