public void AddSubscribers()
{
var subject = new RandomIntsForDays();
var numberFan = new NumberFan();
subject.AddSubscriber(numberFan);
subject.Subscribers.Count.ShouldBe(1);
}
public void GenerateNumbers()
{
var subject = new RandomIntsForDays();
subject.GenerateNumber();
var result = subject.CurrentNumber;
result.ShouldBeOfType <int>();
}
public void RemoveSubscriber()
{
var subject = new RandomIntsForDays();
var numberFan = new NumberFan();
subject.AddSubscriber(numberFan);
subject.RemoveSubscriber(numberFan);
subject.Subscribers.ShouldBeEmpty();
}
public void GenerateNewNumberEachTime()
{
var subject = new RandomIntsForDays();
subject.GenerateNumber();
var firstNumber = subject.CurrentNumber;
subject.GenerateNumber();
var secondNumber = subject.CurrentNumber;
firstNumber.ShouldNotBe(secondNumber);
}
public void NotifySubscribersMultipleTimes(int timesToUpdate)
{
var subject = new RandomIntsForDays();
var numberFan = Substitute.For <ISubscriber>();
subject.AddSubscriber(numberFan);
var expectedValues = new List <int>();
for (var i = 0; i < timesToUpdate; i++)
{
subject.GenerateNumber();
expectedValues.Add(subject.CurrentNumber);
}
numberFan.Received(timesToUpdate).Notify(Arg.Is <int>(x => expectedValues.Contains(x)));
}
public void StartWithNoSubscribers()
{
var subject = new RandomIntsForDays();
subject.Subscribers.Count.ShouldBe(0);
}