package com.javarant.challenges.unittests;

/**
 * This is the Advanced Challenge class for JavaRant.com episode #2
 * 
 * @author Jeffrey.Richley
 */
public interface AdvancedChallenge {

        /**
         * This method is to do three types of validation
         * <ol>
         * <li>Null input is invalid</li>
         * <li>Valid length of input is at least three characters 
         * and maximum length is eight</li>
         * <li>The input must not be a numeric value</li>
         * </ol>
         * @param value The user input to validate
         * @return True if all three validation rules are passed
         */
        public boolean isValidInputForUser(String value);
        
        /**
         * This method returns the number of times this instance
         * has been asked to validate non-valid input through
         * the isValidInputForUser() method
         * @return The number of times invalid input has been input
         */
        public int getNumberOfInvalidInputs();
}