public void ReturnTrueAndMatchMessage_WhenArgumentIsNotGuidEmpty()
{
// Arrange.
Guid value = Guid.Parse("ed76438e-58f6-4d26-9067-9839c7c10b22");
// Act.
IValidationPredicateResult result = GuidNotEmptyValidationPredicate.Instance.Match(value);
// Assert.
Assert.IsTrue(result.IsMatch);
Assert.AreEqual("Argument value <ed76438e-58f6-4d26-9067-9839c7c10b22> is not Guid.Empty.", result.Message);
}