/*
Copyright (c) 2003-2009, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/

/**
 * @fileOverview Defines the {@link CKEDITOR.test} object, which contains
 *		functions used at our testing environment.
 */

/*jsl:import ../tests/yuitest.js*/

/**
 * Contains functions used at our testing environment. Currently,
 * our testing system is based on the
 * <a href="http://developer.yahoo.com/yui/yuitest/">YUI Test</a>.
 * @namespace
 * @example
 */
CKEDITOR.test =
{
	/**
	 * The assertion namespace, containing all assertion functions. Currently,
	 * this is an alias for
	 * <a href="http://developer.yahoo.com/yui/docs/YAHOO.util.Assert.html">YAHOO.util.Assert</a>.
	 * @example
	 * <b>CKEDITOR.test.assert</b>.areEqual( '10', 10 );        // "true"
	 * <b>CKEDITOR.test.assert</b>.areSame( '10', 10 );         // "false"
	 * <b>CKEDITOR.test.assert</b>.isUndefined( window.test );  // "true"
	 */
	assert : YAHOO.util.Assert,

	runner : YAHOO.tool.TestRunner,

	/**
	 * Adds a test case to the test runner.
	 * @param {Object} testCase The test case object. See other tests for
	 *		examples.
	 * @example
	 * <b>CKEDITOR.test.addTestCase</b>((function()
	 * {
	 *     // Local reference to the "assert" object.
	 *     var assert = CKEDITOR.test.assert;
	 *
	 *     return {
	 *         test_example : function()
	 *         {
	 *             assert.areSame( '10', 10 );  // FAIL
	 *         }
	 *      };
	 * })());
	 */
	addTestCase : function( testCase )
	{
		YAHOO.tool.TestRunner.add( new YAHOO.tool.TestCase( testCase ) );
	},

	/**
	 * Gets the inner HTML of an element, for testing purposes.
	 * @param {Boolean} stripLineBreaks Assign 'false' to avoid trimming line-breaks.
	 */
	getInnerHtml : function( elementOrId , stripLineBreaks )
	{
		var html;

		if ( typeof elementOrId == 'string' )
			html = document.getElementById( elementOrId ).innerHTML;
		else if ( elementOrId.getHtml )
			html = elementOrId.getHtml();
		else
			html = elementOrId.innerHTML    // retrieve from innerHTML
				   || elementOrId.value;    // retrieve from value

		return CKEDITOR.test.fixHtml( html, stripLineBreaks );
	},

	fixHtml : function( html, stripLineBreaks )
	{
		html = html.toLowerCase();

		if ( stripLineBreaks !== false )
			html = html.replace( /[\n\r]/g, '' );
		else
			html = html.replace( /\r/g, '' );    // Normalize CRLF.

		function sorter( a, b )
		{
			var nameA = a[ 0 ];
			var nameB = b[ 0 ];
			return nameA < nameB ? -1 : nameA > nameB ? 1 : 0;
		}

		html = html.replace( /<\w[^>]*/g, function( match )
			{
				var attribs = [];
				var hasClass;

				match = match.replace( /\s([^\s=]+)=((?:"[^"]*")|(?:'[^']*')|(?:[^\s]+))/g, function( match, attName, attValue )
					{
						if ( attName == 'style' )
						{
							// Reorganize the style rules so they are sorted by name.

							var rules = [];

							// Push all rules into an Array.
							attValue.replace( /(?:"| |;|^ )\s*([^ :]+?)\s*:\s*([^;"]+?)\s*(?=;|"|$)/g, function( match, name, value )
								{
									rules.push( [ name, value ] );
								});

							// Sort the Array.
							rules.sort( sorter );

							// Transform each rule entry into a string name:value.
							for ( var i = 0 ; i < rules.length ; i++ )
								rules[ i ] = rules[ i ].join( ':' );

							// Join all rules with commas, removing spaces and adding an extra comma to the end.
							attValue = '"' + rules && ( rules.join( ';' ).replace( /\s+/g, '' ) + ';' );
						}

						// IE may have 'class' more than once.
						if ( attName == 'class' )
						{
							if ( hasClass )
								return '';

							hasClass = true;
						}

						if ( attName != '_cke_expando' )
							attribs.push( [ attName, attValue ] );

						return '';
					} );

				attribs.sort( sorter );

				var ret = match.replace( /\s{2,}/g, ' ' );

				for ( var i = 0 ; i < attribs.length ; i++ )
				{
					ret += ' ' + attribs[i][0] + '=';
					ret += (/^["']/).test( attribs[i][1] ) ? attribs[i][1] : '"' + attribs[i][1] + '"';
				}

				return ret;
			} );

		return html;
	},

	/**
	 * Wrapper of CKEDITOR.dom.element::getAttribute for style text normalization.
	 * @param element
	 * @param attrName
	 */
	getAttribute : function( element, attrName )
	{
		var retval = element.getAttribute( attrName );
		if ( attrName == 'style' )
		{
			// 1. Lower case property name.
			// 2. Add space after colon.
			// 3. Strip whitepsaces around semicolon.
			// 4. Always end with semicolon
			return retval.replace( /(?:^|;)\s*([A-Z-_]+)(:\s*)/ig,
				function( match, property, colon )
				{
					return property.toLowerCase() + ': ';
				} )
				.replace( /\s+(?:;\s*|$)/g, ';' )
				.replace( /([^;])$/g, '$1;' );
		}

		return retval;
	},

	/**
	 * Whether control the runner manually instead of running on window onload.
	 */
	deferRunner : false
};