public void AddNotEqualValidationPredicate_WhenArgumentIsLong()
{
// Arrange.
ValidatableArgument<long> argument = new ValidatableArgument<long>("argument", 3);
// Act.
argument.IsNotEqual(5);
// Assert.
Assert.AreEqual(1, argument.ValidationPredicates.Count());
Assert.IsInstanceOfType(argument.ValidationPredicates.First(), typeof(NotEqualValidationPredicate<long>));
}