public void It_should_have_the_Expected_Value_By_Default()
{
var target = new InterlockedDateTimeOffset();
target.Equals(new DateTimeOffset(new DateTime(0, DateTimeKind.Utc))).Should().BeTrue();
target.GetHashCode().Should().Be(new DateTimeOffset(new DateTime(0, DateTimeKind.Utc)).GetHashCode());
}
public void It_should_Implement_IComparable_of_T()
{
var now = DateTimeOffset.UtcNow;
var target = new InterlockedDateTimeOffset(now.UtcDateTime);
target.CompareTo(now).Should().Be(0);
target.CompareTo(new InterlockedDateTimeOffset(now.UtcDateTime)).Should().Be(0);
}
public void It_should_Accept_The_Value_Set()
{
var expected = DateTimeOffset.UtcNow;
var target = new InterlockedDateTimeOffset();
target.Equals(expected).Should().BeFalse();
target.SetValue(expected);
target.Equals(expected).Should().BeTrue();
}
public void It_should_Be_Accept_A_Starting_DateTime()
{
var original = DateTimeOffset.UtcNow;
var target = new InterlockedDateTimeOffset(original.UtcDateTime);
target.GetValue().Should().Be(original);
target.Equals(original).Should().BeTrue();
target.Equals(new InterlockedDateTimeOffset(original.UtcDateTime)).Should().BeTrue();
}
public void It_should_Evaluate_Equality_With_Value_Semantics()
{
var now = DateTimeOffset.UtcNow;
var target = new InterlockedDateTimeOffset(now.UtcDateTime);
target.Equals(null).Should().BeFalse();
target.Equals((object)new InterlockedDateTimeOffset(now.UtcDateTime)).Should().BeTrue();
// ReSharper disable once SuspiciousTypeConversion.Global
target.Equals((object)now).Should().BeTrue();
target.Equals(new object()).Should().BeFalse();
}
public void It_should_Be_Comparable_To_Earlier_And_Later_Values()
{
var now = DateTimeOffset.UtcNow;
var before = now.AddDays(-1);
var after = now.AddDays(1);
var target = new InterlockedDateTimeOffset(now.UtcDateTime);
target.GetValue().Should().Be(now);
target.Should().Be(new InterlockedDateTimeOffset(now.UtcDateTime));
(target >= before).Should().BeTrue();
(before <= target).Should().BeTrue();
(target >= new InterlockedDateTimeOffset(before.UtcDateTime)).Should().BeTrue();
(new InterlockedDateTimeOffset(before.UtcDateTime) <= target).Should().BeTrue();
(target > before).Should().BeTrue();
(before < target).Should().BeTrue();
(target > new InterlockedDateTimeOffset(before.UtcDateTime)).Should().BeTrue();
(new InterlockedDateTimeOffset(before.UtcDateTime) < target).Should().BeTrue();
(target == now).Should().BeTrue();
(now == target).Should().BeTrue();
(target == new InterlockedDateTimeOffset(now.UtcDateTime)).Should().BeTrue();
(new InterlockedDateTimeOffset(now.UtcDateTime) == target).Should().BeTrue();
(target != after).Should().BeTrue();
(after != target).Should().BeTrue();
(target != new InterlockedDateTimeOffset(after.UtcDateTime)).Should().BeTrue();
(new InterlockedDateTimeOffset(after.UtcDateTime) != target).Should().BeTrue();
(target <= before).Should().BeFalse();
(before >= target).Should().BeFalse();
(target <= new InterlockedDateTimeOffset(before.UtcDateTime)).Should().BeFalse();
(new InterlockedDateTimeOffset(before.UtcDateTime) >= target).Should().BeFalse();
(target < before).Should().BeFalse();
(before > target).Should().BeFalse();
(target < new InterlockedDateTimeOffset(before.UtcDateTime)).Should().BeFalse();
(new InterlockedDateTimeOffset(before.UtcDateTime) > target).Should().BeFalse();
target.As <IComparable <DateTimeOffset> >().Should().BeGreaterThan(before);
target.As <IComparable <DateTimeOffset> >().Should().BeLessThan(after);
target.As <IComparable <InterlockedDateTimeOffset> >().Should().BeGreaterThan(new InterlockedDateTimeOffset(before.UtcDateTime));
target.CompareTo(before).Should().BeGreaterThan(0);
}