public void ReturnFalseAndUnmatchMessage_WhenBoundIsNullAndArgumentIsNotNull()
{
// Arrange.
string value = "a";
LessThanValidationPredicate<string> validationPredicate = new LessThanValidationPredicate<string>(null);
// Act.
IValidationPredicateResult result = validationPredicate.Match(value);
// Assert.
Assert.IsFalse(result.IsMatch);
Assert.AreEqual("Argument value <a> is greater than or equal to <null>.", result.Message);
}