public void It_should_Implement_IComparable_of_T()
{
var now = DateTime.UtcNow;
var target = new InterlockedDateTime(now);
target.CompareTo(now).Should().Be(0);
target.CompareTo(new InterlockedDateTime(now)).Should().Be(0);
}
public void It_should_Be_Comparable_To_Earlier_And_Later_Values()
{
var now = DateTime.UtcNow;
var before = now.AddDays(-1);
var after = now.AddDays(1);
var target = new InterlockedDateTime(now);
target.GetValue().Should().Be(now);
target.Should().Be(new InterlockedDateTime(now));
(target >= before).Should().BeTrue();
(before <= target).Should().BeTrue();
(target >= new InterlockedDateTime(before)).Should().BeTrue();
(new InterlockedDateTime(before) <= target).Should().BeTrue();
(target > before).Should().BeTrue();
(before < target).Should().BeTrue();
(target > new InterlockedDateTime(before)).Should().BeTrue();
(new InterlockedDateTime(before) < target).Should().BeTrue();
(target == now).Should().BeTrue();
(now == target).Should().BeTrue();
(target == new InterlockedDateTime(now)).Should().BeTrue();
(new InterlockedDateTime(now) == target).Should().BeTrue();
(target != after).Should().BeTrue();
(after != target).Should().BeTrue();
(target != new InterlockedDateTime(after)).Should().BeTrue();
(new InterlockedDateTime(after) != target).Should().BeTrue();
(target <= before).Should().BeFalse();
(before >= target).Should().BeFalse();
(target <= new InterlockedDateTime(before)).Should().BeFalse();
(new InterlockedDateTime(before) >= target).Should().BeFalse();
(target < before).Should().BeFalse();
(before > target).Should().BeFalse();
(target < new InterlockedDateTime(before)).Should().BeFalse();
(new InterlockedDateTime(before) > target).Should().BeFalse();
target.As <IComparable <DateTime> >().Should().BeGreaterThan(before);
target.As <IComparable <DateTime> >().Should().BeLessThan(after);
target.As <IComparable <InterlockedDateTime> >().Should().BeGreaterThan(new InterlockedDateTime(before));
target.CompareTo(before).Should().BeGreaterThan(0);
}