public void YieldAllInstances_WhenCalled_ReturnsASingleInstance()
{
var single = new SingleDaySchedule(DateTime.MinValue);
var count = single.YieldAllInstances().Count();
Assert.That(count, Is.EqualTo(1));
}
public void GetInstance_WhenCalledWithZeroIndex_MatchesFirstYieldedInstance()
{
var single = new SingleDaySchedule(DateTime.MinValue);
var first = single.YieldAllInstances().First();
var zero = single.GetInstance(0);
Assert.That(zero, Is.EqualTo(first));
}