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/*
 * QUnit - A JavaScript Unit Testing Framework
 * 
 * http://docs.jquery.com/QUnit
 *
 * Copyright (c) 2009 John Resig, Jörn Zaefferer
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 */

(function(window) {

var QUnit = {

        // call on start of module test to prepend name to all tests
        module: function(name, testEnvironment) {
                config.currentModule = name;

                synchronize(function() {
                        if ( config.currentModule ) {
                                QUnit.moduleDone( config.currentModule, config.moduleStats.bad, config.moduleStats.all );
                        }

                        config.currentModule = name;
                        config.moduleTestEnvironment = testEnvironment;
                        config.moduleStats = { all: 0, bad: 0 };

                        QUnit.moduleStart( name, testEnvironment );
                });
        },

        asyncTest: function(testName, expected, callback) {
                if ( arguments.length === 2 ) {
                        callback = expected;
                        expected = 0;
                }

                QUnit.test(testName, expected, callback, true);
        },
        
        test: function(testName, expected, callback, async) {
                var name = '<span class="test-name">' + testName + '</span>', testEnvironment, testEnvironmentArg;

                if ( arguments.length === 2 ) {
                        callback = expected;
                        expected = null;
                }
                // is 2nd argument a testEnvironment?
                if ( expected && typeof expected === 'object') {
                        testEnvironmentArg =  expected;
                        expected = null;
                }

                if ( config.currentModule ) {
                        name = '<span class="module-name">' + config.currentModule + "</span>: " + name;
                }

                if ( !validTest(config.currentModule + ": " + testName) ) {
                        return;
                }

                synchronize(function() {

                        testEnvironment = extend({
                                setup: function() {},
                                teardown: function() {}
                        }, config.moduleTestEnvironment);
                        if (testEnvironmentArg) {
                                extend(testEnvironment,testEnvironmentArg);
                        }

                        QUnit.testStart( testName, testEnvironment );

                        // allow utility functions to access the current test environment
                        QUnit.current_testEnvironment = testEnvironment;
                        
                        config.assertions = [];
                        config.expected = expected;
                        
                        var tests = id("qunit-tests");
                        if (tests) {
                                var b = document.createElement("strong");
                                        b.innerHTML = "Running " + name;
                                var li = document.createElement("li");
                                        li.appendChild( b );
                                        li.id = "current-test-output";
                                tests.appendChild( li )
                        }

                        try {
                                if ( !config.pollution ) {
                                        saveGlobal();
                                }

                                testEnvironment.setup.call(testEnvironment);
                        } catch(e) {
                                QUnit.ok( false, "Setup failed on " + name + ": " + e.message );
                        }
            });
        
            synchronize(function() {
                        if ( async ) {
                                QUnit.stop();
                        }

                        try {
                                callback.call(testEnvironment);
                        } catch(e) {
                                fail("Test " + name + " died, exception and test follows", e, callback);
                                QUnit.ok( false, "Died on test #" + (config.assertions.length + 1) + ": " + e.message );
                                // else next test will carry the responsibility
                                saveGlobal();

                                // Restart the tests if they're blocking
                                if ( config.blocking ) {
                                        start();
                                }
                        }
                });

                synchronize(function() {
                        try {
                                checkPollution();
                                testEnvironment.teardown.call(testEnvironment);
                        } catch(e) {
                                QUnit.ok( false, "Teardown failed on " + name + ": " + e.message );
                        }
            });
        
            synchronize(function() {
                        try {
                                QUnit.reset();
                        } catch(e) {
                                fail("reset() failed, following Test " + name + ", exception and reset fn follows", e, reset);
                        }

                        if ( config.expected && config.expected != config.assertions.length ) {
                                QUnit.ok( false, "Expected " + config.expected + " assertions, but " + config.assertions.length + " were run" );
                        }

                        var good = 0, bad = 0,
                                tests = id("qunit-tests");

                        config.stats.all += config.assertions.length;
                        config.moduleStats.all += config.assertions.length;

                        if ( tests ) {
                                var ol  = document.createElement("ol");

                                for ( var i = 0; i < config.assertions.length; i++ ) {
                                        var assertion = config.assertions[i];

                                        var li = document.createElement("li");
                                        li.className = assertion.result ? "pass" : "fail";
                                        li.innerHTML = assertion.message || "(no message)";
                                        ol.appendChild( li );

                                        if ( assertion.result ) {
                                                good++;
                                        } else {
                                                bad++;
                                                config.stats.bad++;
                                                config.moduleStats.bad++;
                                        }
                                }
                                if (bad == 0) {
                                        ol.style.display = "none";
                                }

                                var b = document.createElement("strong");
                                b.innerHTML = name + " <b style='color:black;'>(<b class='fail'>" + bad + "</b>, <b class='pass'>" + good + "</b>, " + config.assertions.length + ")</b>";
                                
                                addEvent(b, "click", function() {
                                        var next = b.nextSibling, display = next.style.display;
                                        next.style.display = display === "none" ? "block" : "none";
                                });
                                
                                addEvent(b, "dblclick", function(e) {
                                        var target = e && e.target ? e.target : window.event.srcElement;
                                        if ( target.nodeName.toLowerCase() == "span" || target.nodeName.toLowerCase() == "b" ) {
                                                target = target.parentNode;
                                        }
                                        if ( window.location && target.nodeName.toLowerCase() === "strong" ) {
                                                window.location.search = "?" + encodeURIComponent(getText([target]).replace(/\(.+\)$/, "").replace(/(^\s*|\s*$)/g, ""));
                                        }
                                });

                                var li = id("current-test-output");
                                li.id = "";
                                li.className = bad ? "fail" : "pass";
                                li.removeChild( li.firstChild );
                                li.appendChild( b );
                                li.appendChild( ol );

                                if ( bad ) {
                                        var toolbar = id("qunit-testrunner-toolbar");
                                        if ( toolbar ) {
                                                toolbar.style.display = "block";
                                                id("qunit-filter-pass").disabled = null;
                                                id("qunit-filter-missing").disabled = null;
                                        }
                                }

                        } else {
                                for ( var i = 0; i < config.assertions.length; i++ ) {
                                        if ( !config.assertions[i].result ) {
                                                bad++;
                                                config.stats.bad++;
                                                config.moduleStats.bad++;
                                        }
                                }
                        }

                        QUnit.testDone( testName, bad, config.assertions.length );

                        if ( !window.setTimeout && !config.queue.length ) {
                                done();
                        }
                });

                synchronize( done );
        },
        
        /**
         * Specify the number of expected assertions to gurantee that failed test (no assertions are run at all) don't slip through.
         */
        expect: function(asserts) {
                config.expected = asserts;
        },

        /**
         * Asserts true.
         * @example ok( "asdfasdf".length > 5, "There must be at least 5 chars" );
         */
        ok: function(a, msg) {
                msg = escapeHtml(msg);
                QUnit.log(a, msg);

                config.assertions.push({
                        result: !!a,
                        message: msg
                });
        },

        /**
         * Checks that the first two arguments are equal, with an optional message.
         * Prints out both actual and expected values.
         *
         * Prefered to ok( actual == expected, message )
         *
         * @example equal( format("Received {0} bytes.", 2), "Received 2 bytes." );
         *
         * @param Object actual
         * @param Object expected
         * @param String message (optional)
         */
        equal: function(actual, expected, message) {
                push(expected == actual, actual, expected, message);
        },

        notEqual: function(actual, expected, message) {
                push(expected != actual, actual, expected, message);
        },
        
        deepEqual: function(actual, expected, message) {
                push(QUnit.equiv(actual, expected), actual, expected, message);
        },

        notDeepEqual: function(actual, expected, message) {
                push(!QUnit.equiv(actual, expected), actual, expected, message);
        },

        strictEqual: function(actual, expected, message) {
                push(expected === actual, actual, expected, message);
        },

        notStrictEqual: function(actual, expected, message) {
                push(expected !== actual, actual, expected, message);
        },

        raises: function(fn,  message) {
                try {
                        fn();
                        ok( false, message );
                }
                catch (e) {
                        ok( true, message );
                }
        },

        start: function() {
                // A slight delay, to avoid any current callbacks
                if ( window.setTimeout ) {
                        window.setTimeout(function() {
                                if ( config.timeout ) {
                                        clearTimeout(config.timeout);
                                }

                                config.blocking = false;
                                process();
                        }, 13);
                } else {
                        config.blocking = false;
                        process();
                }
        },
        
        stop: function(timeout) {
                config.blocking = true;

                if ( timeout && window.setTimeout ) {
                        config.timeout = window.setTimeout(function() {
                                QUnit.ok( false, "Test timed out" );
                                QUnit.start();
                        }, timeout);
                }
        }

};

// Backwards compatibility, deprecated
QUnit.equals = QUnit.equal;
QUnit.same = QUnit.deepEqual;

// Maintain internal state
var config = {
        // The queue of tests to run
        queue: [],

        // block until document ready
        blocking: true
};

// Load paramaters
(function() {
        var location = window.location || { search: "", protocol: "file:" },
                GETParams = location.search.slice(1).split('&');

        for ( var i = 0; i < GETParams.length; i++ ) {
                GETParams[i] = decodeURIComponent( GETParams[i] );
                if ( GETParams[i] === "noglobals" ) {
                        GETParams.splice( i, 1 );
                        i--;
                        config.noglobals = true;
                } else if ( GETParams[i].search('=') > -1 ) {
                        GETParams.splice( i, 1 );
                        i--;
                }
        }
        
        // restrict modules/tests by get parameters
        config.filters = GETParams;
        
        // Figure out if we're running the tests from a server or not
        QUnit.isLocal = !!(location.protocol === 'file:');
})();

// Expose the API as global variables, unless an 'exports'
// object exists, in that case we assume we're in CommonJS
if ( typeof exports === "undefined" || typeof require === "undefined" ) {
        extend(window, QUnit);
        window.QUnit = QUnit;
} else {
        extend(exports, QUnit);
        exports.QUnit = QUnit;
}

// define these after exposing globals to keep them in these QUnit namespace only
extend(QUnit, {
        config: config,

        // Initialize the configuration options
        init: function() {
                extend(config, {
                        stats: { all: 0, bad: 0 },
                        moduleStats: { all: 0, bad: 0 },
                        started: +new Date,
                        updateRate: 1000,
                        blocking: false,
                        autostart: true,
                        autorun: false,
                        assertions: [],
                        filters: [],
                        queue: []
                });

                var tests = id("qunit-tests"),
                        banner = id("qunit-banner"),
                        result = id("qunit-testresult");

                if ( tests ) {
                        tests.innerHTML = "";
                }

                if ( banner ) {
                        banner.className = "";
                }

                if ( result ) {
                        result.parentNode.removeChild( result );
                }
        },
        
        /**
         * Resets the test setup. Useful for tests that modify the DOM.
         */
        reset: function() {
                if ( window.jQuery ) {
                        jQuery("#main, #qunit-fixture").html( config.fixture );
                }
        },
        
        /**
         * Trigger an event on an element.
         *
         * @example triggerEvent( document.body, "click" );
         *
         * @param DOMElement elem
         * @param String type
         */
        triggerEvent: function( elem, type, event ) {
                if ( document.createEvent ) {
                        event = document.createEvent("MouseEvents");
                        event.initMouseEvent(type, true, true, elem.ownerDocument.defaultView,
                                0, 0, 0, 0, 0, false, false, false, false, 0, null);
                        elem.dispatchEvent( event );

                } else if ( elem.fireEvent ) {
                        elem.fireEvent("on"+type);
                }
        },
        
        // Safe object type checking
        is: function( type, obj ) {
                return QUnit.objectType( obj ) == type;
        },
        
        objectType: function( obj ) {
                if (typeof obj === "undefined") {
                                return "undefined";

                // consider: typeof null === object
                }
                if (obj === null) {
                                return "null";
                }

                var type = Object.prototype.toString.call( obj )
                        .match(/^\[object\s(.*)\]$/)[1] || '';

                switch (type) {
                                case 'Number':
                                                if (isNaN(obj)) {
                                                                return "nan";
                                                } else {
                                                                return "number";
                                                }
                                case 'String':
                                case 'Boolean':
                                case 'Array':
                                case 'Date':
                                case 'RegExp':
                                case 'Function':
                                                return type.toLowerCase();
                }
                if (typeof obj === "object") {
                                return "object";
                }
                return undefined;
        },
        
        // Logging callbacks
        begin: function() {},
        done: function(failures, total) {},
        log: function(result, message) {},
        testStart: function(name, testEnvironment) {},
        testDone: function(name, failures, total) {},
        moduleStart: function(name, testEnvironment) {},
        moduleDone: function(name, failures, total) {}
});

if ( typeof document === "undefined" || document.readyState === "complete" ) {
        config.autorun = true;
}

addEvent(window, "load", function() {
        QUnit.begin();
        
        // Initialize the config, saving the execution queue
        var oldconfig = extend({}, config);
        QUnit.init();
        extend(config, oldconfig);

        config.blocking = false;

        var userAgent = id("qunit-userAgent");
        if ( userAgent ) {
                userAgent.innerHTML = navigator.userAgent;
        }
        var banner = id("qunit-header");
        if ( banner ) {
                banner.innerHTML = '<a href="' + location.href + '">' + banner.innerHTML + '</a>'; 
        }
        
        var toolbar = id("qunit-testrunner-toolbar");
        if ( toolbar ) {
                toolbar.style.display = "none";
                
                var filter = document.createElement("input");
                filter.type = "checkbox";
                filter.id = "qunit-filter-pass";
                filter.disabled = true;
                addEvent( filter, "click", function() {
                        var li = document.getElementsByTagName("li");
                        for ( var i = 0; i < li.length; i++ ) {
                                if ( li[i].className.indexOf("pass") > -1 ) {
                                        li[i].style.display = filter.checked ? "none" : "";
                                }
                        }
                });
                toolbar.appendChild( filter );

                var label = document.createElement("label");
                label.setAttribute("for", "qunit-filter-pass");
                label.innerHTML = "Hide passed tests";
                toolbar.appendChild( label );

                var missing = document.createElement("input");
                missing.type = "checkbox";
                missing.id = "qunit-filter-missing";
                missing.disabled = true;
                addEvent( missing, "click", function() {
                        var li = document.getElementsByTagName("li");
                        for ( var i = 0; i < li.length; i++ ) {
                                if ( li[i].className.indexOf("fail") > -1 && li[i].innerHTML.indexOf('missing test - untested code is broken code') > - 1 ) {
                                        li[i].parentNode.parentNode.style.display = missing.checked ? "none" : "block";
                                }
                        }
                });
                toolbar.appendChild( missing );

                label = document.createElement("label");
                label.setAttribute("for", "qunit-filter-missing");
                label.innerHTML = "Hide missing tests (untested code is broken code)";
                toolbar.appendChild( label );
        }

        var main = id('main') || id('qunit-fixture');
        if ( main ) {
                config.fixture = main.innerHTML;
        }

        if (config.autostart) {
                QUnit.start();
        }
});

function done() {
        if ( config.doneTimer && window.clearTimeout ) {
                window.clearTimeout( config.doneTimer );
                config.doneTimer = null;
        }

        if ( config.queue.length ) {
                config.doneTimer = window.setTimeout(function(){
                        if ( !config.queue.length ) {
                                done();
                        } else {
                                synchronize( done );
                        }
                }, 13);

                return;
        }

        config.autorun = true;

        // Log the last module results
        if ( config.currentModule ) {
                QUnit.moduleDone( config.currentModule, config.moduleStats.bad, config.moduleStats.all );
        }

        var banner = id("qunit-banner"),
                tests = id("qunit-tests"),
                html = ['Tests completed in ',
                +new Date - config.started, ' milliseconds.<br/>',
                '<span class="passed">', config.stats.all - config.stats.bad, '</span> tests of <span class="total">', config.stats.all, '</span> passed, <span class="failed">', config.stats.bad,'</span> failed.'].join('');

        if ( banner ) {
                banner.className = (config.stats.bad ? "qunit-fail" : "qunit-pass");
        }

        if ( tests ) {  
                var result = id("qunit-testresult");

                if ( !result ) {
                        result = document.createElement("p");
                        result.id = "qunit-testresult";
                        result.className = "result";
                        tests.parentNode.insertBefore( result, tests.nextSibling );
                }

                result.innerHTML = html;
        }

        QUnit.done( config.stats.bad, config.stats.all );
}

function validTest( name ) {
        var i = config.filters.length,
                run = false;

        if ( !i ) {
                return true;
        }
        
        while ( i-- ) {
                var filter = config.filters[i],
                        not = filter.charAt(0) == '!';

                if ( not ) {
                        filter = filter.slice(1);
                }

                if ( name.indexOf(filter) !== -1 ) {
                        return !not;
                }

                if ( not ) {
                        run = true;
                }
        }

        return run;
}

function escapeHtml(s) {
        s = s === null ? "" : s + "";
        return s.replace(/[\&"<>\\]/g, function(s) {
                switch(s) {
                        case "&": return "&amp;";
                        case "\\": return "\\\\";
                        case '"': return '\"';
                        case "<": return "&lt;";
                        case ">": return "&gt;";
                        default: return s;
                }
        });
}

function push(result, actual, expected, message) {
        message = escapeHtml(message) || (result ? "okay" : "failed");
        message = '<span class="test-message">' + message + "</span>";
        expected = escapeHtml(QUnit.jsDump.parse(expected));
        actual = escapeHtml(QUnit.jsDump.parse(actual));
        var output = message + ', expected: <span class="test-expected">' + expected + '</span>';
        if (actual != expected) {
                output += ' result: <span class="test-actual">' + actual + '</span>, diff: ' + QUnit.diff(expected, actual);
        }
        
        // can't use ok, as that would double-escape messages
        QUnit.log(result, output);
        config.assertions.push({
                result: !!result,
                message: output
        });
}

function synchronize( callback ) {
        config.queue.push( callback );

        if ( config.autorun && !config.blocking ) {
                process();
        }
}

function process() {
        var start = (new Date()).getTime();

        while ( config.queue.length && !config.blocking ) {
                if ( config.updateRate <= 0 || (((new Date()).getTime() - start) < config.updateRate) ) {
                        config.queue.shift()();

                } else {
                        setTimeout( process, 13 );
                        break;
                }
        }
}

function saveGlobal() {
        config.pollution = [];
        
        if ( config.noglobals ) {
                for ( var key in window ) {
                        config.pollution.push( key );
                }
        }
}

function checkPollution( name ) {
        var old = config.pollution;
        saveGlobal();
        
        var newGlobals = diff( old, config.pollution );
        if ( newGlobals.length > 0 ) {
                ok( false, "Introduced global variable(s): " + newGlobals.join(", ") );
                config.expected++;
        }

        var deletedGlobals = diff( config.pollution, old );
        if ( deletedGlobals.length > 0 ) {
                ok( false, "Deleted global variable(s): " + deletedGlobals.join(", ") );
                config.expected++;
        }
}

// returns a new Array with the elements that are in a but not in b
function diff( a, b ) {
        var result = a.slice();
        for ( var i = 0; i < result.length; i++ ) {
                for ( var j = 0; j < b.length; j++ ) {
                        if ( result[i] === b[j] ) {
                                result.splice(i, 1);
                                i--;
                                break;
                        }
                }
        }
        return result;
}

function fail(message, exception, callback) {
        if ( typeof console !== "undefined" && console.error && console.warn ) {
                console.error(message);
                console.error(exception);
                console.warn(callback.toString());

        } else if ( window.opera && opera.postError ) {
                opera.postError(message, exception, callback.toString);
        }
}

function extend(a, b) {
        for ( var prop in b ) {
                a[prop] = b[prop];
        }

        return a;
}

function addEvent(elem, type, fn) {
        if ( elem.addEventListener ) {
                elem.addEventListener( type, fn, false );
        } else if ( elem.attachEvent ) {
                elem.attachEvent( "on" + type, fn );
        } else {
                fn();
        }
}

function id(name) {
        return !!(typeof document !== "undefined" && document && document.getElementById) &&
                document.getElementById( name );
}

// Test for equality any JavaScript type.
// Discussions and reference: http://philrathe.com/articles/equiv
// Test suites: http://philrathe.com/tests/equiv
// Author: Philippe Rathé <prathe@gmail.com>
QUnit.equiv = function () {

    var innerEquiv; // the real equiv function
    var callers = []; // stack to decide between skip/abort functions
    var parents = []; // stack to avoiding loops from circular referencing

    // Call the o related callback with the given arguments.
    function bindCallbacks(o, callbacks, args) {
        var prop = QUnit.objectType(o);
        if (prop) {
            if (QUnit.objectType(callbacks[prop]) === "function") {
                return callbacks[prop].apply(callbacks, args);
            } else {
                return callbacks[prop]; // or undefined
            }
        }
    }
    
    var callbacks = function () {

        // for string, boolean, number and null
        function useStrictEquality(b, a) {
            if (b instanceof a.constructor || a instanceof b.constructor) {
                // to catch short annotaion VS 'new' annotation of a declaration
                // e.g. var i = 1;
                //      var j = new Number(1);
                return a == b;
            } else {
                return a === b;
            }
        }

        return {
            "string": useStrictEquality,
            "boolean": useStrictEquality,
            "number": useStrictEquality,
            "null": useStrictEquality,
            "undefined": useStrictEquality,

            "nan": function (b) {
                return isNaN(b);
            },

            "date": function (b, a) {
                return QUnit.objectType(b) === "date" && a.valueOf() === b.valueOf();
            },

            "regexp": function (b, a) {
                return QUnit.objectType(b) === "regexp" &&
                    a.source === b.source && // the regex itself
                    a.global === b.global && // and its modifers (gmi) ...
                    a.ignoreCase === b.ignoreCase &&
                    a.multiline === b.multiline;
            },

            // - skip when the property is a method of an instance (OOP)
            // - abort otherwise,
            //   initial === would have catch identical references anyway
            "function": function () {
                var caller = callers[callers.length - 1];
                return caller !== Object &&
                        typeof caller !== "undefined";
            },

            "array": function (b, a) {
                var i, j, loop;
                var len;

                // b could be an object literal here
                if ( ! (QUnit.objectType(b) === "array")) {
                    return false;
                }   
                
                len = a.length;
                if (len !== b.length) { // safe and faster
                    return false;
                }
                
                //track reference to avoid circular references
                parents.push(a);
                for (i = 0; i < len; i++) {
                    loop = false;
                    for(j=0;j<parents.length;j++){
                        if(parents[j] === a[i]){
                            loop = true;//dont rewalk array
                        }
                    }
                    if (!loop && ! innerEquiv(a[i], b[i])) {
                        parents.pop();
                        return false;
                    }
                }
                parents.pop();
                return true;
            },

            "object": function (b, a) {
                var i, j, loop;
                var eq = true; // unless we can proove it
                var aProperties = [], bProperties = []; // collection of strings

                // comparing constructors is more strict than using instanceof
                if ( a.constructor !== b.constructor) {
                    return false;
                }

                // stack constructor before traversing properties
                callers.push(a.constructor);
                //track reference to avoid circular references
                parents.push(a);
                
                for (i in a) { // be strict: don't ensures hasOwnProperty and go deep
                    loop = false;
                    for(j=0;j<parents.length;j++){
                        if(parents[j] === a[i])
                            loop = true; //don't go down the same path twice
                    }
                    aProperties.push(i); // collect a's properties

                    if (!loop && ! innerEquiv(a[i], b[i])) {
                        eq = false;
                        break;
                    }
                }

                callers.pop(); // unstack, we are done
                parents.pop();

                for (i in b) {
                    bProperties.push(i); // collect b's properties
                }

                // Ensures identical properties name
                return eq && innerEquiv(aProperties.sort(), bProperties.sort());
            }
        };
    }();

    innerEquiv = function () { // can take multiple arguments
        var args = Array.prototype.slice.apply(arguments);
        if (args.length < 2) {
            return true; // end transition
        }

        return (function (a, b) {
            if (a === b) {
                return true; // catch the most you can
            } else if (a === null || b === null || typeof a === "undefined" || typeof b === "undefined" || QUnit.objectType(a) !== QUnit.objectType(b)) {
                return false; // don't lose time with error prone cases
            } else {
                return bindCallbacks(a, callbacks, [b, a]);
            }

        // apply transition with (1..n) arguments
        })(args[0], args[1]) && arguments.callee.apply(this, args.splice(1, args.length -1));
    };

    return innerEquiv;

}();

/**
 * jsDump
 * Copyright (c) 2008 Ariel Flesler - aflesler(at)gmail(dot)com | http://flesler.blogspot.com
 * Licensed under BSD (http://www.opensource.org/licenses/bsd-license.php)
 * Date: 5/15/2008
 * @projectDescription Advanced and extensible data dumping for Javascript.
 * @version 1.0.0
 * @author Ariel Flesler
 * @link {http://flesler.blogspot.com/2008/05/jsdump-pretty-dump-of-any-javascript.html}
 */
QUnit.jsDump = (function() {
        function quote( str ) {
                return '"' + str.toString().replace(/"/g, '\\"') + '"';
        };
        function literal( o ) {
                return o + '';  
        };
        function join( pre, arr, post ) {
                var s = jsDump.separator(),
                        base = jsDump.indent(),
                        inner = jsDump.indent(1);
                if ( arr.join )
                        arr = arr.join( ',' + s + inner );
                if ( !arr )
                        return pre + post;
                return [ pre, inner + arr, base + post ].join(s);
        };
        function array( arr ) {
                var i = arr.length,     ret = Array(i);                                 
                this.up();
                while ( i-- )
                        ret[i] = this.parse( arr[i] );                          
                this.down();
                return join( '[', ret, ']' );
        };
        
        var reName = /^function (\w+)/;
        
        var jsDump = {
                parse:function( obj, type ) { //type is used mostly internally, you can fix a (custom)type in advance
                        var     parser = this.parsers[ type || this.typeOf(obj) ];
                        type = typeof parser;                   
                        
                        return type == 'function' ? parser.call( this, obj ) :
                                   type == 'string' ? parser :
                                   this.parsers.error;
                },
                typeOf:function( obj ) {
                        var type;
                        if ( obj === null ) {
                                type = "null";
                        } else if (typeof obj === "undefined") {
                                type = "undefined";
                        } else if (QUnit.is("RegExp", obj)) {
                                type = "regexp";
                        } else if (QUnit.is("Date", obj)) {
                                type = "date";
                        } else if (QUnit.is("Function", obj)) {
                                type = "function";
                        } else if (obj.setInterval && obj.document && !obj.nodeType) {
                                type = "window";
                        } else if (obj.nodeType === 9) {
                                type = "document";
                        } else if (obj.nodeType) {
                                type = "node";
                        } else if (typeof obj === "object" && typeof obj.length === "number" && obj.length >= 0) {
                                type = "array";
                        } else {
                                type = typeof obj;
                        }
                        return type;
                },
                separator:function() {
                        return this.multiline ? this.HTML ? '<br />' : '\n' : this.HTML ? '&nbsp;' : ' ';
                },
                indent:function( extra ) {// extra can be a number, shortcut for increasing-calling-decreasing
                        if ( !this.multiline )
                                return '';
                        var chr = this.indentChar;
                        if ( this.HTML )
                                chr = chr.replace(/\t/g,'   ').replace(/ /g,'&nbsp;');
                        return Array( this._depth_ + (extra||0) ).join(chr);
                },
                up:function( a ) {
                        this._depth_ += a || 1;
                },
                down:function( a ) {
                        this._depth_ -= a || 1;
                },
                setParser:function( name, parser ) {
                        this.parsers[name] = parser;
                },
                // The next 3 are exposed so you can use them
                quote:quote, 
                literal:literal,
                join:join,
                //
                _depth_: 1,
                // This is the list of parsers, to modify them, use jsDump.setParser
                parsers:{
                        window: '[Window]',
                        document: '[Document]',
                        error:'[ERROR]', //when no parser is found, shouldn't happen
                        unknown: '[Unknown]',
                        'null':'null',
                        undefined:'undefined',
                        'function':function( fn ) {
                                var ret = 'function',
                                        name = 'name' in fn ? fn.name : (reName.exec(fn)||[])[1];//functions never have name in IE
                                if ( name )
                                        ret += ' ' + name;
                                ret += '(';
                                
                                ret = [ ret, this.parse( fn, 'functionArgs' ), '){'].join('');
                                return join( ret, this.parse(fn,'functionCode'), '}' );
                        },
                        array: array,
                        nodelist: array,
                        arguments: array,
                        object:function( map ) {
                                var ret = [ ];
                                this.up();
                                for ( var key in map )
                                        ret.push( this.parse(key,'key') + ': ' + this.parse(map[key]) );
                                this.down();
                                return join( '{', ret, '}' );
                        },
                        node:function( node ) {
                                var open = this.HTML ? '&lt;' : '<',
                                        close = this.HTML ? '&gt;' : '>';
                                        
                                var tag = node.nodeName.toLowerCase(),
                                        ret = open + tag;
                                        
                                for ( var a in this.DOMAttrs ) {
                                        var val = node[this.DOMAttrs[a]];
                                        if ( val )
                                                ret += ' ' + a + '=' + this.parse( val, 'attribute' );
                                }
                                return ret + close + open + '/' + tag + close;
                        },
                        functionArgs:function( fn ) {//function calls it internally, it's the arguments part of the function
                                var l = fn.length;
                                if ( !l ) return '';                            
                                
                                var args = Array(l);
                                while ( l-- )
                                        args[l] = String.fromCharCode(97+l);//97 is 'a'
                                return ' ' + args.join(', ') + ' ';
                        },
                        key:quote, //object calls it internally, the key part of an item in a map
                        functionCode:'[code]', //function calls it internally, it's the content of the function
                        attribute:quote, //node calls it internally, it's an html attribute value
                        string:quote,
                        date:quote,
                        regexp:literal, //regex
                        number:literal,
                        'boolean':literal
                },
                DOMAttrs:{//attributes to dump from nodes, name=>realName
                        id:'id',
                        name:'name',
                        'class':'className'
                },
                HTML:false,//if true, entities are escaped ( <, >, \t, space and \n )
                indentChar:'   ',//indentation unit
                multiline:false //if true, items in a collection, are separated by a \n, else just a space.
        };

        return jsDump;
})();

// from Sizzle.js
function getText( elems ) {
        var ret = "", elem;

        for ( var i = 0; elems[i]; i++ ) {
                elem = elems[i];

                // Get the text from text nodes and CDATA nodes
                if ( elem.nodeType === 3 || elem.nodeType === 4 ) {
                        ret += elem.nodeValue;

                // Traverse everything else, except comment nodes
                } else if ( elem.nodeType !== 8 ) {
                        ret += getText( elem.childNodes );
                }
        }

        return ret;
};

/*
 * Javascript Diff Algorithm
 *  By John Resig (http://ejohn.org/)
 *  Modified by Chu Alan "sprite"
 *
 * Released under the MIT license.
 *
 * More Info:
 *  http://ejohn.org/projects/javascript-diff-algorithm/
 *  
 * Usage: QUnit.diff(expected, actual)
 * 
 * QUnit.diff("the quick brown fox jumped over", "the quick fox jumps over") == "the  quick <del>brown </del> fox <del>jumped </del><ins>jumps </ins> over"
 */
QUnit.diff = (function() {
        function diff(o, n){
                var ns = new Object();
                var os = new Object();
                
                for (var i = 0; i < n.length; i++) {
                        if (ns[n[i]] == null) 
                                ns[n[i]] = {
                                        rows: new Array(),
                                        o: null
                                };
                        ns[n[i]].rows.push(i);
                }
                
                for (var i = 0; i < o.length; i++) {
                        if (os[o[i]] == null) 
                                os[o[i]] = {
                                        rows: new Array(),
                                        n: null
                                };
                        os[o[i]].rows.push(i);
                }
                
                for (var i in ns) {
                        if (ns[i].rows.length == 1 && typeof(os[i]) != "undefined" && os[i].rows.length == 1) {
                                n[ns[i].rows[0]] = {
                                        text: n[ns[i].rows[0]],
                                        row: os[i].rows[0]
                                };
                                o[os[i].rows[0]] = {
                                        text: o[os[i].rows[0]],
                                        row: ns[i].rows[0]
                                };
                        }
                }
                
                for (var i = 0; i < n.length - 1; i++) {
                        if (n[i].text != null && n[i + 1].text == null && n[i].row + 1 < o.length && o[n[i].row + 1].text == null &&
                        n[i + 1] == o[n[i].row + 1]) {
                                n[i + 1] = {
                                        text: n[i + 1],
                                        row: n[i].row + 1
                                };
                                o[n[i].row + 1] = {
                                        text: o[n[i].row + 1],
                                        row: i + 1
                                };
                        }
                }
                
                for (var i = n.length - 1; i > 0; i--) {
                        if (n[i].text != null && n[i - 1].text == null && n[i].row > 0 && o[n[i].row - 1].text == null &&
                        n[i - 1] == o[n[i].row - 1]) {
                                n[i - 1] = {
                                        text: n[i - 1],
                                        row: n[i].row - 1
                                };
                                o[n[i].row - 1] = {
                                        text: o[n[i].row - 1],
                                        row: i - 1
                                };
                        }
                }
                
                return {
                        o: o,
                        n: n
                };
        }
        
        return function(o, n){
                o = o.replace(/\s+$/, '');
                n = n.replace(/\s+$/, '');
                var out = diff(o == "" ? [] : o.split(/\s+/), n == "" ? [] : n.split(/\s+/));

                var str = "";
                
                var oSpace = o.match(/\s+/g);
                if (oSpace == null) {
                        oSpace = [" "];
                }
                else {
                        oSpace.push(" ");
                }
                var nSpace = n.match(/\s+/g);
                if (nSpace == null) {
                        nSpace = [" "];
                }
                else {
                        nSpace.push(" ");
                }
                
                if (out.n.length == 0) {
                        for (var i = 0; i < out.o.length; i++) {
                                str += '<del>' + out.o[i] + oSpace[i] + "</del>";
                        }
                }
                else {
                        if (out.n[0].text == null) {
                                for (n = 0; n < out.o.length && out.o[n].text == null; n++) {
                                        str += '<del>' + out.o[n] + oSpace[n] + "</del>";
                                }
                        }
                        
                        for (var i = 0; i < out.n.length; i++) {
                                if (out.n[i].text == null) {
                                        str += '<ins>' + out.n[i] + nSpace[i] + "</ins>";
                                }
                                else {
                                        var pre = "";
                                        
                                        for (n = out.n[i].row + 1; n < out.o.length && out.o[n].text == null; n++) {
                                                pre += '<del>' + out.o[n] + oSpace[n] + "</del>";
                                        }
                                        str += " " + out.n[i].text + nSpace[i] + pre;
                                }
                        }
                }
                
                return str;
        }
})();

})(this);