public async Task <SurveyModel> Handle(CreateSurveyCommand request, CancellationToken cancellationToken)
{
var survey = new Survey(request.SurveyTopic, request.NumberOfRespondents, request.RespondentType);
foreach (var option in request.SurveyOptions)
{
if (option.PreferredNumberOfVotes.HasValue)
{
survey.AddSurveyOption(option.OptionText, option.PreferredNumberOfVotes.Value);
}
else
{
survey.AddSurveyOption(option.OptionText);
}
}
IVoteDistribution voteDistribution;
if (request.SurveyOptions.Any(option => option.PreferredNumberOfVotes > 0))
{
voteDistribution = new FixedVoteDistribution();
}
else
{
voteDistribution = new RandomVoteDistribution();
}
var result = survey.CalculateOutcome(voteDistribution);
_surveyRepository.Add(result);
await _surveyRepository.UnitOfWork.SaveEntitiesAsync(cancellationToken);
return(_mapper.Map <SurveyModel>(result));
}
public void Should_Be_Able_To_Calculate_Results_Of_Survey_With_Fixed_Outcome()
{
var topic = "Tabs or spaces?";
var numberOfRespondents = 1000;
var respondentType = "Developers";
var survey = new Survey(topic, numberOfRespondents, respondentType);
survey.AddSurveyOption("Tabs", 600);
survey.AddSurveyOption("Spaces", 400);
var voteDistribution = new FixedVoteDistribution();
var result = survey.CalculateOutcome(voteDistribution);
Assert.Equal(600, result.Options.First().NumberOfVotes);
Assert.Equal(400, result.Options.Last().NumberOfVotes);
}
