public void AddGreaterThanValidationPredicate_WhenArgumentIsFloat()
{
// Arrange.
ValidatableArgument<float> argument = new ValidatableArgument<float>("argument", 3);
// Act.
argument.IsGreaterThan(5);
// Assert.
Assert.AreEqual(1, argument.ValidationPredicates.Count());
Assert.IsInstanceOfType(argument.ValidationPredicates.First(), typeof(GreaterThanValidationPredicate<float>));
}