public void IsInVariant_IsEquallyDistributed(int numberOfUsers, int experimentId)
{
var service = new ExperimentService();
var userIds = Enumerable.Range(0, numberOfUsers).Select(x => x.ToString());
int control = 0;
int variant = 0;
foreach (var userId in userIds)
{
var isInVariant = service.IsInVariant(experimentId, userId);
if (isInVariant)
{
variant++;
}
else
{
control++;
}
}
var diff = (double)variant - control;
var percentage = Math.Abs((diff / control) * 100);
Assert.True(percentage < 0.5, $"Control: {control}\tVariant:{variant}\tPercentage{percentage}\tExperimentId:{experimentId}");
}
public void IsInVariant_ReturnsSameValueForEachInvocation(int experimentId, int userId)
{
var iterations = 1000;
var service = new ExperimentService();
var control = 0;
var variant = 0;
for (var i = 0; i < iterations; i++)
{
var isInVariant = service.IsInVariant(experimentId, userId.ToString());
if (isInVariant)
{
variant++;
}
else
{
control++;
}
}
Assert.False(control > 0 && variant > 0, $"Control: {control}\tVariant: {variant}\tExperimentID: {experimentId}\tUserID: {userId}");
}
public void IsInVariant_GivesUsersBothVariants(int userId, List <int> experimentIds)
{
var service = new ExperimentService();
var control = 0;
var variant = 0;
foreach (var id in experimentIds)
{
var isInVariant = service.IsInVariant(id, userId.ToString());
if (isInVariant)
{
variant++;
}
else
{
control++;
}
}
var minimumParticipations = (int)(experimentIds.Count * 0.45);
Assert.True(control > minimumParticipations && variant > minimumParticipations, $"Control: {control}\tVariant: {variant}\tUserID: {userId}");
}