public async void CalculateServiceCalculateVarianceShouldCalculateVariance()
{
//Arrange
var optimistic = _fixture.Create <double>();
var pessimistic = _fixture.Create <double>();
//Act
var sumStDeviations = await _calculateService.CalculateStDeviation(optimistic, pessimistic);
var assertResult = Math.Round(sumStDeviations * sumStDeviations, 4); //According to its formula (See the description upper)
var result = await _calculateService.CalculateVariance(sumStDeviations);
//Assert
result.Should().Be(assertResult);
}
public async Task <SummaryAssessment> CalculateTasks(double desiredCompletionTime, string estimationTimeFormat)
{
var tasksItems = await GetTasksList();
var totalAssessments = new SummaryAssessment();
totalAssessments.DesiredCompletionTime = desiredCompletionTime;
totalAssessments.EstimationTimeFormat = estimationTimeFormat;
foreach (var taskItem in tasksItems)
{
taskItem.Assessments.Estimation = 0;
taskItem.Assessments.StDeviation = 0;
taskItem.Assessments.Variance = 0;
}
foreach (var taskItem in tasksItems)
{
var optimistic = taskItem.Assessments.Optimistic;
var mostLikely = taskItem.Assessments.MostLikely;
var pessimistic = taskItem.Assessments.Pessimistic;
var deviation = await _calculateService.CalculateStDeviation(optimistic, pessimistic);
taskItem.Assessments.Estimation = await _calculateService.CalculateEstimation(optimistic, mostLikely, pessimistic);
taskItem.Assessments.StDeviation += deviation;
taskItem.Assessments.Variance += await _calculateService.CalculateVariance(deviation);
totalAssessments.SumEstimation += taskItem.Assessments.Estimation;
totalAssessments.SumStDeviation += taskItem.Assessments.StDeviation;
totalAssessments.SumVariance += taskItem.Assessments.Variance;
}
totalAssessments.PercentageOfCompletion = await _calculateService.CalculatePercentageOfCompletion(totalAssessments.SumEstimation, totalAssessments.SumVariance, desiredCompletionTime);
await _cacheService.Upadate <SummaryAssessment>(nameof(SummaryAssessment), totalAssessments);
return(totalAssessments);
}
