/**
 * The DateAssert object provides functions to test JavaScript Date objects
 * for a variety of cases.
 * @namespace Test
 * @module test
 * @class DateAssert
 * @static
 */
 
YUITest.DateAssert = {

    /**
     * Asserts that a date's month, day, and year are equal to another date's.
     * @param {Date} expected The expected date.
     * @param {Date} actual The actual date to test.
     * @param {String} message (Optional) The message to display if the assertion fails.
     * @method datesAreEqual
     * @static
     */
    datesAreEqual : function (expected, actual, message){
        YUITest.Assert._increment();        
        if (expected instanceof Date && actual instanceof Date){
            var msg = "";
            
            //check years first
            if (expected.getFullYear() != actual.getFullYear()){
                msg = "Years should be equal.";
            }
            
            //now check months
            if (expected.getMonth() != actual.getMonth()){
                msg = "Months should be equal.";
            }                
            
            //last, check the day of the month
            if (expected.getDate() != actual.getDate()){
                msg = "Days of month should be equal.";
            }                
            
            if (msg.length){
                throw new YUITest.ComparisonFailure(YUITest.Assert._formatMessage(message, msg), expected, actual);
            }
        } else {
            throw new TypeError("YUITest.DateAssert.datesAreEqual(): Expected and actual values must be Date objects.");
        }
    },

    /**
     * Asserts that a date's hour, minutes, and seconds are equal to another date's.
     * @param {Date} expected The expected date.
     * @param {Date} actual The actual date to test.
     * @param {String} message (Optional) The message to display if the assertion fails.
     * @method timesAreEqual
     * @static
     */
    timesAreEqual : function (expected, actual, message){
        YUITest.Assert._increment();
        if (expected instanceof Date && actual instanceof Date){
            var msg = "";
            
            //check hours first
            if (expected.getHours() != actual.getHours()){
                msg = "Hours should be equal.";
            }
            
            //now check minutes
            if (expected.getMinutes() != actual.getMinutes()){
                msg = "Minutes should be equal.";
            }                
            
            //last, check the seconds
            if (expected.getSeconds() != actual.getSeconds()){
                msg = "Seconds should be equal.";
            }                
            
            if (msg.length){
                throw new YUITest.ComparisonFailure(YUITest.Assert._formatMessage(message, msg), expected, actual);
            }
        } else {
            throw new TypeError("YUITest.DateAssert.timesAreEqual(): Expected and actual values must be Date objects.");
        }
    }
    
};