public void AverageShouldBeNullIfAllGradesAreZeroTest()
{
var classScoreReport = new ClassScoreReport();
classScoreReport.IncludedStudents.Add(new Student()
{
Grade = 0
});
Assert.IsTrue(classScoreReport.RoundedClassAverage == null);
}
public void RoundedClassAverageDoesNOTThrowWhenClassAverageIsNull()
{
var classScoreReport = new ClassScoreReport();
classScoreReport.IncludedStudents.Add(new Student()
{
Grade = null
});
Assert.IsTrue(classScoreReport.RoundedClassAverage == null);
}
public void ShouldRoundClassAverageTest()
{
var classScoreReport = new ClassScoreReport();
classScoreReport.IncludedStudents.Add(new Student()
{
Grade = 88.3342m
});
//3. Student scores with a decimal should be truncated to the nearest whole number before calculating class average
//4. All class averages should be rounded to one decimal place (because of 3. - this is meaningless)
Assert.IsTrue(classScoreReport.RoundedClassAverage == 88.0m);
}
public async Task <ClassScoreReport> GetClassScoreReportAsync(string dataFile)
{
var classScoreReport = new ClassScoreReport();
var studentGrades = await _csvDataFileService.GetStudentGradesFromCsvFileAsync(dataFile);
_logger.LogInformation("GetScoreReport - Read {Count} Grades From File {dataFile}", studentGrades.Count, dataFile);
//2. Student scores of 0 should be ignored during the calculation. - also assuming nulls should be excluded
classScoreReport.IncludedStudents = studentGrades.
Where(student => student.Grade.HasValue && student.Grade.Value > 0).ToList();
classScoreReport.TotalStudents = studentGrades.Count;
classScoreReport.ClassName = Path.GetFileNameWithoutExtension(dataFile);
classScoreReport.ExcludedStudents = studentGrades
.Where(student => !student.Grade.HasValue || student.Grade.Value == 0).ToList();
return(classScoreReport);
}
public void RoundedClassAverageIgnoresNullGradesTest()
{
var classScoreReport = new ClassScoreReport();
classScoreReport.IncludedStudents.Add(new Student()
{
Grade = 88.3342m
});
classScoreReport.IncludedStudents.Add(new Student()
{
Grade = null
});
//3. Student scores with a decimal should be truncated to the nearest whole number before calculating class average
//4. All class averages should be rounded to one decimal place
Assert.IsTrue(classScoreReport.RoundedClassAverage == 88.0m);
}
public void AverageShouldBeNullIfNoStudentsTest()
{
var classScoreReport = new ClassScoreReport();
Assert.IsTrue(classScoreReport.RoundedClassAverage == null);
}
