public void TimeIsResumedWhenSeededAfterFreeze()
{
var currentReferenceTime = new DateTime(2016, 6, 16, 12, 40, 0);
var referenceTimeProviderMock = new Mock <IDateTimeProvider>();
referenceTimeProviderMock
.Setup(x => x.Time())
.Returns(() => currentReferenceTime);
var seededTimeProvider = new SeededDateTimeProvider(referenceTimeProviderMock.Object);
seededTimeProvider.FreezeTime();
var firstTime = seededTimeProvider.Time();
// fast-forward reference time one minute. This should not affect
// the seeded time provider.
currentReferenceTime = currentReferenceTime.AddMinutes(1);
var secondTime = seededTimeProvider.Time();
// Now, seed the timer with a new time (which is one minute later than the previous)
seededTimeProvider.SetTimeSeed(currentReferenceTime);
var thirdTime = seededTimeProvider.Time();
firstTime.ShouldBe(secondTime);
thirdTime.ShouldBe(secondTime.AddMinutes(1));
}
public void FreezeTimeReturnsSameTimeOnSubsequentCalls()
{
var currentReferenceTime = new DateTime(2016, 6, 16, 12, 40, 0);
var referenceTimeProviderMock = new Mock <IDateTimeProvider>();
referenceTimeProviderMock
.Setup(x => x.Time())
.Returns(() => currentReferenceTime);
var seededTimeProvider = new SeededDateTimeProvider(referenceTimeProviderMock.Object);
seededTimeProvider.FreezeTime();
var firstTime = seededTimeProvider.Time();
// fast-forward reference time one minute. This should not affect
// the seeded time provider.
currentReferenceTime = currentReferenceTime.AddMinutes(1);
var secondTime = seededTimeProvider.Time();
firstTime.ShouldBe(secondTime);
}
public void SeededTimeRetainsDifferenceToReferenceTime()
{
var currentReferenceTime = new DateTime(2016, 6, 16, 12, 40, 0);
var referenceTimeProviderMock = new Mock <IDateTimeProvider>();
referenceTimeProviderMock
.Setup(x => x.Time())
.Returns(() => currentReferenceTime);
var seededTimeProvider = new SeededDateTimeProvider(referenceTimeProviderMock.Object);
// seed the time provider with a time that is 23 seconds behind the current reference time
var firstSeededTime = currentReferenceTime.Subtract(TimeSpan.FromSeconds(23));
seededTimeProvider.SetTimeSeed(firstSeededTime);
// move reference time forward by 40 seconds
currentReferenceTime = currentReferenceTime.Add(TimeSpan.FromSeconds(40));
var secondSeededTime = seededTimeProvider.Time();
Assert.That(secondSeededTime - firstSeededTime, Is.EqualTo(TimeSpan.FromSeconds(40)));
Assert.That(currentReferenceTime - secondSeededTime, Is.EqualTo(TimeSpan.FromSeconds(23)));
}
