/*
 * Copyright 2016 Jacek Caban for CodeWeavers
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

var compat_version;
var tests = [];

sync_test("elem_props", function() {
    var elem = document.documentElement;

    function test_exposed(prop, expect) {
        if(expect)
            ok(prop in elem, prop + " not found in element.");
        else
            ok(!(prop in elem), prop + " found in element.");
    }

    var v = document.documentMode;

    test_exposed("doScroll", v < 11);
    test_exposed("readyState", v < 11);
    test_exposed("clientTop", true);
    test_exposed("title", true);
    test_exposed("querySelectorAll", v >= 8);
    test_exposed("textContent", v >= 9);
    test_exposed("prefix", v >= 9);
    test_exposed("firstElementChild", v >= 9);
    test_exposed("onsubmit", v >= 9);
    test_exposed("getElementsByClassName", v >= 9);
    test_exposed("removeAttributeNS", v >= 9);
    test_exposed("addEventListener", v >= 9);
    if (v != 8 /* todo_wine */) test_exposed("hasAttribute", v >= 8);
    test_exposed("removeEventListener", v >= 9);
    test_exposed("dispatchEvent", v >= 9);
    test_exposed("msSetPointerCapture", v >= 10);
    if (v >= 9) test_exposed("spellcheck", v >= 10);

    elem = document.createElement("style");
    test_exposed("media", true);
    test_exposed("type", true);
    test_exposed("disabled", true);
    test_exposed("media", true);
    test_exposed("sheet", v >= 9);
    test_exposed("readyState", v < 11);
    test_exposed("styleSheet", v < 11);
    test_exposed("classList", v >= 10);
});

sync_test("doc_props", function() {
    function test_exposed(prop, expect) {
        if(expect)
            ok(prop in document, prop + " not found in document.");
        else
            ok(!(prop in document), prop + " found in document.");
    }

    var v = document.documentMode;

    test_exposed("textContent", v >= 9);
    test_exposed("prefix", v >= 9);
    test_exposed("defaultView", v >= 9);
    test_exposed("head", v >= 9);
    test_exposed("addEventListener", v >= 9);
    test_exposed("removeEventListener", v >= 9);
    test_exposed("dispatchEvent", v >= 9);
    test_exposed("createEvent", v >= 9);

    test_exposed("parentWindow", true);
    if(v >= 9) ok(document.defaultView === document.parentWindow, "defaultView != parentWindow");
});

sync_test("docfrag_props", function() {
    var docfrag = document.createDocumentFragment();

    function test_exposed(prop, expect) {
        if(expect)
            ok(prop in docfrag, prop + " not found in document fragent.");
        else
            ok(!(prop in docfrag), prop + " found in document fragent.");
    }

    var v = document.documentMode;

    test_exposed("compareDocumentPosition", v >= 9);
});

sync_test("window_props", function() {
    function test_exposed(prop, expect) {
        if(expect)
            ok(prop in window, prop + " not found in window.");
        else
            ok(!(prop in window), prop + " found in window.");
    }

    var v = document.documentMode;

    test_exposed("postMessage", true);
    test_exposed("sessionStorage", true);
    test_exposed("localStorage", true);
    test_exposed("addEventListener", v >= 9);
    test_exposed("removeEventListener", v >= 9);
    test_exposed("dispatchEvent", v >= 9);
    test_exposed("getSelection", v >= 9);
    test_exposed("onfocusout", v >= 9);
    test_exposed("getComputedStyle", v >= 9);
    test_exposed("requestAnimationFrame", v >= 10);
    test_exposed("Map", v >= 11);
    test_exposed("Set", v >= 11);
    if(v >= 9) /* FIXME: native exposes it in all compat modes */
        test_exposed("performance", true);
    test_exposed("console", v >= 10);
});

sync_test("xhr_props", function() {
    var xhr = new XMLHttpRequest();

    function test_exposed(prop, expect) {
        if(expect)
            ok(prop in xhr, prop + " not found in XMLHttpRequest.");
        else
            ok(!(prop in xhr), prop + " found in XMLHttpRequest.");
    }

    var v = document.documentMode;

    test_exposed("addEventListener", v >= 9);
    test_exposed("removeEventListener", v >= 9);
    test_exposed("dispatchEvent", v >= 9);
});

sync_test("stylesheet_props", function() {
    var v = document.documentMode;
    var elem = document.createElement("style");
    document.body.appendChild(elem);
    var sheet = v >= 9 ? elem.sheet : elem.styleSheet;

    function test_exposed(prop, expect) {
        if(expect)
            ok(prop in sheet, prop + " not found in style sheet.");
        else
            ok(!(prop in sheet), prop + " found in style sheet.");
    }

    test_exposed("href", true);
    test_exposed("title", true);
    test_exposed("type", true);
    test_exposed("media", true);
    test_exposed("ownerNode", v >= 9);
    test_exposed("ownerRule", v >= 9);
    test_exposed("cssRules", v >= 9);
    test_exposed("insertRule", v >= 9);
    test_exposed("deleteRule", v >= 9);
    test_exposed("disabled", true);
    test_exposed("parentStyleSheet", true);
    test_exposed("owningElement", true);
    test_exposed("readOnly", true);
    test_exposed("imports", true);
    test_exposed("id", true);
    test_exposed("addImport", true);
    test_exposed("addRule", true);
    test_exposed("removeImport", true);
    test_exposed("removeRule", true);
    test_exposed("cssText", true);
    test_exposed("rules", true);
});

sync_test("xhr open", function() {
    var e = false;
    try {
        (new XMLHttpRequest()).open("GET", "https://www.winehq.org/");
    }catch(ex) {
        e = true;
    }

    if(document.documentMode < 10)
        ok(e, "expected exception");
    else
        ok(!e, "unexpected exception");
});

sync_test("style_props", function() {
    var style = document.body.style;

    function test_exposed(prop, expect) {
        if(expect)
            ok(prop in style, prop + " not found in style object.");
        else
            ok(!(prop in style), prop + " found in style object.");
    }

    var v = document.documentMode;

    test_exposed("removeAttribute", true);
    test_exposed("zIndex", true);
    test_exposed("z-index", true);
    test_exposed("filter", true);
    test_exposed("pixelTop", true);
    test_exposed("float", true);
    test_exposed("css-float", false);
    test_exposed("style-float", false);
    test_exposed("setProperty", v >= 9);
    test_exposed("removeProperty", v >= 9);
    test_exposed("background-clip", v >= 9);
    test_exposed("msTransform", v >= 9);
    test_exposed("transform", v >= 10);

    style = document.body.currentStyle;

    test_exposed("zIndex", true);
    test_exposed("z-index", true);
    test_exposed("filter", true);
    test_exposed("pixelTop", false);
    test_exposed("float", true);
    test_exposed("css-float", false);
    test_exposed("style-float", false);
    test_exposed("setProperty", v >= 9);
    test_exposed("removeProperty", v >= 9);
    test_exposed("background-clip", v >= 9);
    test_exposed("transform", v >= 10);

    if(window.getComputedStyle) {
        style = window.getComputedStyle(document.body);

        test_exposed("removeAttribute", false);
        test_exposed("zIndex", true);
        test_exposed("z-index", true);
        test_exposed("pixelTop", false);
        test_exposed("float", true);
        test_exposed("css-float", false);
        test_exposed("style-float", false);
        test_exposed("setProperty", v >= 9);
        test_exposed("removeProperty", v >= 9);
        test_exposed("background-clip", v >= 9);
        test_exposed("transform", v >= 10);
    }
});

sync_test("JS objs", function() {
    var g = window;

    function test_exposed(func, obj, expect) {
        if(expect)
            ok(func in obj, func + " not found in " + obj);
        else
            ok(!(func in obj), func + " found in " + obj);
    }

    function test_parses(code, expect) {
        var success;
        try {
            eval(code);
            success = true;
        }catch(e) {
            success = false;
        }
        if(expect)
            ok(success === true, code + " did not parse");
        else
            ok(success === false, code + " parsed");
    }

    var v = document.documentMode;

    test_exposed("ScriptEngineMajorVersion", g, true);

    test_exposed("JSON", g, v >= 8);
    test_exposed("now", Date, true);
    test_exposed("toISOString", Date.prototype, v >= 9);
    test_exposed("isArray", Array, v >= 9);
    test_exposed("forEach", Array.prototype, v >= 9);
    test_exposed("indexOf", Array.prototype, v >= 9);
    test_exposed("trim", String.prototype, v >= 9);
    test_exposed("map", Array.prototype, v >= 9);

    /* FIXME: IE8 implements weird semi-functional property descriptors. */
    if(v != 8) {
        test_exposed("getOwnPropertyDescriptor", Object, v >= 8);
        test_exposed("defineProperty", Object, v >= 8);
        test_exposed("defineProperties", Object, v >= 8);
    }

    test_exposed("getPrototypeOf", Object, v >= 9);

    test_parses("if(false) { o.default; }", v >= 9);
    test_parses("if(false) { o.with; }", v >= 9);
    test_parses("if(false) { o.if; }", v >= 9);
});

sync_test("elem_by_id", function() {
    document.body.innerHTML = '<form id="testid" name="testname"></form>';

    var id_elem = document.getElementById("testid");
    ok(id_elem.tagName === "FORM", "id_elem.tagName = " + id_elem.tagName);

    var name_elem = document.getElementById("testname");
    if(document.documentMode < 8)
        ok(id_elem === name_elem, "id_elem != id_elem");
    else
        ok(name_elem === null, "name_elem != null");
});

sync_test("doc_mode", function() {
    compat_version = parseInt(document.location.search.substring(1));

    trace("Testing compatibility mode " + compat_version);

    if(compat_version > 6 && compat_version > document.documentMode) {
        win_skip("Document mode not supported (expected " + compat_version + " got " + document.documentMode + ")");
        reportSuccess();
        return;
    }

    ok(Math.max(compat_version, 5) === document.documentMode, "documentMode = " + document.documentMode);

    if(document.documentMode > 5)
        ok(document.compatMode === "CSS1Compat", "document.compatMode = " + document.compatMode);
    else
        ok(document.compatMode === "BackCompat", "document.compatMode = " + document.compatMode);
});

async_test("iframe_doc_mode", function() {
    var iframe = document.createElement("iframe");

    iframe.onload = function() {
        var iframe_mode = iframe.contentWindow.document.documentMode;
        if(document.documentMode < 9)
            ok(iframe_mode === 5, "iframe_mode = " + iframe_mode);
        else
            ok(iframe_mode === document.documentMode, "iframe_mode = " + iframe_mode);
        next_test();
    }

    iframe.src = "about:blank";
    document.body.appendChild(iframe);
});

sync_test("conditional_comments", function() {
    var div = document.createElement("div");
    document.body.appendChild(div);

    function test_version(v) {
        var version = compat_version ? compat_version : 7;

        div.innerHTML = "<!--[if lte IE " + v + "]>true<![endif]-->";
        ok(div.innerText === (version <= v ? "true" : ""),
           "div.innerText = " + div.innerText + " for version (<=) " + v);

        div.innerHTML = "<!--[if lt IE " + v + "]>true<![endif]-->";
        ok(div.innerText === (version < v ? "true" : ""),
           "div.innerText = " + div.innerText + " for version (<) " + v);

        div.innerHTML = "<!--[if gte IE " + v + "]>true<![endif]-->";
        ok(div.innerText === (version >= v && version < 10 ? "true" : ""),
           "div.innerText = " + div.innerText + " for version (>=) " + v);

        div.innerHTML = "<!--[if gt IE " + v + "]>true<![endif]-->";
        ok(div.innerText === (version > v && version < 10 ? "true" : ""),
           "div.innerText = " + div.innerText + " for version (>) " + v);
    }

    test_version(5);
    test_version(6);
    test_version(7);
    test_version(8);
});

var ready_states;

async_test("script_load", function() {
    var v = document.documentMode;
    if(v < 9) {
        next_test();
        return;
    }

    var elem = document.createElement("script");
    ready_states = "";

    elem.onreadystatechange = guard(function() {
        ok(v < 11, "unexpected onreadystatechange call");
        ready_states += elem.readyState + ",";
    });

    elem.onload = guard(function() {
        switch(v) {
        case 9:
            ok(ready_states === "loading,exec,loaded,", "ready_states = " + ready_states);
            break;
        case 10:
            ok(ready_states === "loading,exec,", "ready_states = " + ready_states);
            break;
        case 11:
            ok(ready_states === "exec,", "ready_states = " + ready_states);
            break;
        }
        next_test();
    });

    document.body.appendChild(elem);
    elem.src = "jsstream.php?simple";
    external.writeStream("simple", "ready_states += 'exec,';");
});

sync_test("navigator", function() {
    var v = document.documentMode, re;
    var app = navigator.appVersion;
    ok(navigator.userAgent === "Mozilla/" + app,
       "userAgent = " + navigator.userAgent + " appVersion = " + app);

    re = v < 11
        ? "^" + (v < 9 ? "4" : "5") + "\\.0 \\(compatible; MSIE " + (v < 7 ? 7 : v) +
          "\\.0; Windows NT [0-9].[0-9]; .*Trident/[678]\\.0.*\\)$"
        : "^5.0 \\(Windows NT [0-9].[0-9]; .*Trident/[678]\\.0.*rv:11.0\\) like Gecko$";
    ok(new RegExp(re).test(app), "appVersion = " + app);

    ok(navigator.appCodeName === "Mozilla", "appCodeName = " + navigator.appCodeName);
    ok(navigator.appName === (v < 11 ? "Microsoft Internet Explorer" : "Netscape"),
       "appName = " + navigator.appName);
    ok(navigator.toString() === (v < 9 ? "[object]" : "[object Navigator]"),
       "navigator.toString() = " + navigator.toString());
});

sync_test("delete_prop", function() {
    var v = document.documentMode;
    var obj = document.createElement("div"), r, obj2;

    obj.prop1 = true;
    r = false;
    try {
        delete obj.prop1;
    }catch(ex) {
        r = true;
    }
    if(v < 8) {
        ok(r, "did not get an expected exception");
        return;
    }
    ok(!r, "got an unexpected exception");
    ok(!("prop1" in obj), "prop1 is still in obj");

    /* again, this time prop1 does not exist */
    r = false;
    try {
        delete obj.prop1;
    }catch(ex) {
        r = true;
    }
    if(v < 9) {
        ok(r, "did not get an expected exception");
        return;
    }else {
        ok(!r, "got an unexpected exception");
        ok(!("prop1" in obj), "prop1 is still in obj");
    }

    r = (delete obj.className);
    ok(r, "delete returned " + r);
    ok("className" in obj, "className deleted from obj");
    ok(obj.className === "", "className = " + obj.className);

    /* builtin propertiles don't throw any exception, but are not really deleted */
    r = (delete obj.tagName);
    ok(r, "delete returned " + r);
    ok("tagName" in obj, "tagName deleted from obj");
    ok(obj.tagName === "DIV", "tagName = " + obj.tagName);

    obj = document.querySelectorAll("*");
    ok("0" in obj, "0 is not in obj");
    obj2 = obj[0];
    r = (delete obj[0]);
    ok("0" in obj, "0 is not in obj");
    ok(obj[0] === obj2, "obj[0] != obj2");

    /* test window object and its global scope handling */
    obj = window;

    obj.globalprop1 = true;
    ok(globalprop1, "globalprop1 = " + globalprop1);
    r = false;
    try {
        delete obj.globalprop1;
    }catch(ex) {
        r = true;
    }
    if(v < 9) {
        ok(r, "did not get an expected exception");
    }else {
        ok(!r, "got an unexpected globalprop1 exception");
        ok(!("globalprop1" in obj), "globalprop1 is still in obj");
    }

    globalprop2 = true;
    ok(obj.globalprop2, "globalprop2 = " + globalprop2);
    r = false;
    try {
        delete obj.globalprop2;
    }catch(ex) {
        r = true;
    }
    if(v < 9) {
        ok(r, "did not get an expected globalprop2 exception");
    }else {
        ok(!r, "got an unexpected exception");
        todo_wine.
        ok(!("globalprop2" in obj), "globalprop2 is still in obj");
    }

    obj.globalprop3 = true;
    ok(globalprop3, "globalprop3 = " + globalprop3);
    r = false;
    try {
        delete globalprop3;
    }catch(ex) {
        r = true;
    }
    if(v < 9) {
        ok(r, "did not get an expected exception");
        ok("globalprop3" in obj, "globalprop3 is not in obj");
    }else {
        ok(!r, "got an unexpected globalprop3 exception");
        ok(!("globalprop3" in obj), "globalprop3 is still in obj");
    }

    globalprop4 = true;
    ok(obj.globalprop4, "globalprop4 = " + globalprop4);
    r = (delete globalprop4);
    ok(r, "delete returned " + r);
    todo_wine.
    ok(!("globalprop4" in obj), "globalprop4 is still in obj");
});

var func_scope_val = 1;
var func_scope_val2 = 2;

sync_test("func_scope", function() {
    var func_scope_val = 2;

    var f = function func_scope_val() {
        return func_scope_val;
    };

    func_scope_val = 3;
    if(document.documentMode < 9) {
        ok(f() === 3, "f() = " + f());
        return;
    }
    ok(f === f(), "f() = " + f());

    f = function func_scope_val(a) {
        func_scope_val = 4;
        return func_scope_val;
    };

    func_scope_val = 3;
    ok(f === f(), "f() = " + f());
    ok(func_scope_val === 3, "func_scope_val = " + func_scope_val);
    ok(window.func_scope_val === 1, "window.func_scope_val = " + window.func_scope_val);

    f = function func_scope_val(a) {
        return (function() { return a ? func_scope_val(false) : func_scope_val; })();
    };

    ok(f === f(true), "f(true) = " + f(true));

    window = 1;
    ok(window === window.self, "window = " + window);

    ! function func_scope_val2() {};
    ok(window.func_scope_val2 === 2, "window.func_scope_val2 = " + window.func_scope_val2);

    var o = {};
    (function(x) {
        ok(x === o, "x = " + x);
        ! function x() {};
        ok(x === o, "x != o");
    })(o);

    (function(x) {
        ok(x === o, "x = " + x);
        1, function x() {};
        ok(x === o, "x != o");
    })(o);

    (function() {
        ! function x() {};
        try {
            x();
            ok(false, "expected exception");
        }catch(e) {}
    })(o);
});

sync_test("set_obj", function() {
    if(!("Set" in window)) return;

    var s = new Set, r;
    ok(Object.getPrototypeOf(s) === Set.prototype, "unexpected Set prototype");

    function test_length(name, len) {
        ok(Set.prototype[name].length === len, "Set.prototype." + name + " = " + Set.prototype[name].length);
    }
    test_length("add", 1);
    test_length("clear", 0);
    test_length("delete", 1);
    test_length("forEach", 1);
    test_length("has", 1);
    ok(!("entries" in s), "entries are in Set");
    ok(!("keys" in s), "keys are in Set");
    ok(!("values" in s), "values are in Set");

    r = Object.prototype.toString.call(s);
    ok(r === "[object Object]", "toString returned " + r);
});

sync_test("map_obj", function() {
    if(!("Map" in window)) return;

    var s = new Map, r, i;
    ok(Object.getPrototypeOf(s) === Map.prototype, "unexpected Map prototype");

    function test_length(name, len) {
        ok(Map.prototype[name].length === len, "Map.prototype." + name + " = " + Map.prototype[name].length);
    }
    test_length("clear", 0);
    test_length("delete", 1);
    test_length("forEach", 1);
    test_length("get", 1);
    test_length("has", 1);
    test_length("set", 2);
    ok(!("entries" in s), "entries are in Map");
    ok(!("keys" in s), "keys are in Map");
    ok(!("values" in s), "values are in Map");
    todo_wine.
    ok("size" in Map.prototype, "size is not in Map.prototype");

    r = Object.prototype.toString.call(s);
    ok(r === "[object Object]", "toString returned " + r);

    r = s.get("test");
    ok(r === undefined, "get(test) returned " + r);
    r = s.has("test");
    ok(r === false, "has(test) returned " + r);
    ok(s.size === 0, "size = " + s.size + " expected 0");

    r = s.set("test", 1);
    ok(r === undefined, "set returned " + r);
    ok(s.size === 1, "size = " + s.size + " expected 1");
    r = s.get("test");
    ok(r === 1, "get(test) returned " + r);
    r = s.has("test");
    ok(r === true, "has(test) returned " + r);

    s.size = 100;
    ok(s.size === 1, "size = " + s.size + " expected 1");

    s.set("test", 2);
    r = s.get("test");
    ok(r === 2, "get(test) returned " + r);
    r = s.has("test");
    ok(r === true, "has(test) returned " + r);

    r = s["delete"]("test"); /* using s.delete() would break parsing in quirks mode */
    ok(r === true, "delete(test) returned " + r);
    ok(s.size === 0, "size = " + s.size + " expected 0");
    r = s["delete"]("test");
    ok(r === false, "delete(test) returned " + r);

    var test_keys = [undefined, null, NaN, 3, "str", false, true, {}];
    for(i in test_keys) {
        r = s.set(test_keys[i], test_keys[i] + 1);
        ok(r === undefined, "set(test) returned " + r);
    }
    ok(s.size === test_keys.length, "size = " + s.size + " expected " + test_keys.length);
    for(i in test_keys) {
        r = s.get(test_keys[i]);
        if(isNaN(test_keys[i]))
            ok(isNaN(r), "get(" + test_keys[i] + ") returned " + r);
        else
            ok(r === test_keys[i] + 1, "get(" + test_keys[i] + ") returned " + r);
    }

    var calls = [];
    i = 0;
    r = s.forEach(function(value, key) {
        if(isNaN(test_keys[i])) {
            ok(isNaN(key), "key = " + key + " expected NaN");
            ok(isNaN(value), "value = " + value + " expected NaN");
        }else {
            ok(key === test_keys[i], "key = " + key + " expected " + test_keys[i]);
            ok(value === key + 1, "value = " + value);
        }
        i++;
    });
    ok(i === test_keys.length, "i = " + i);
    ok(r === undefined, "forEach returned " + r);

    s.set(3, "test2")
    calls = [];
    i = 0;
    s.forEach(function(value, key) {
        if(isNaN(test_keys[i]))
            ok(isNaN(key), "key = " + key + " expected " + test_keys[i]);
        else
            ok(key === test_keys[i], "key = " + key + " expected " + test_keys[i]);
        i++;
    });
    ok(i === test_keys.length, "i = " + i);

    r = s.clear();
    ok(r === undefined, "clear returned " + r);
    ok(s.size === 0, "size = " + s.size + " expected 0");
    r = s.get(test_keys[0]);
    ok(r === undefined, "get returned " + r);

    s = new Map();
    s.set(1, 10);
    s.set(2, 20);
    s.set(3, 30);
    i = true;
    s.forEach(function() {
        ok(i, "unexpected call");
        s.clear();
        i = false;
    });

    s = new Map();
    s.set(1, 10);
    s.set(2, 20);
    s.set(3, 30);
    i = 0;
    s.forEach(function(value, key) {
        i += key + value;
        r = s["delete"](key);
        ok(r === true, "delete returned " + r);
    });
    ok(i === 66, "i = " + i);

    try {
        Map.prototype.set.call({}, 1, 2);
        ok(false, "expected exception");
    }catch(e) {
        ok(e.number === 0xa13fc - 0x80000000, "e.number = " + e.number);
    }
});

sync_test("elem_attr", function() {
    var v = document.documentMode;
    var elem = document.createElement("div"), r;

    r = elem.getAttribute("class");
    ok(r === null, "class attr = " + r);
    r = elem.getAttribute("className");
    ok(r === (v < 8 ? "" : null), "className attr = " + r);

    elem.className = "cls";
    r = elem.getAttribute("class");
    ok(r === (v < 8 ? null : "cls"), "class attr = " + r);
    r = elem.getAttribute("className");
    ok(r === (v < 8 ? "cls" : null), "className attr = " + r);

    elem.setAttribute("class", "cls2");
    ok(elem.className === (v < 8 ? "cls" : "cls2"), "elem.className = " + elem.className);
    r = elem.getAttribute("class");
    ok(r === "cls2", "class attr = " + r);
    r = elem.getAttribute("className");
    ok(r === (v < 8 ? "cls" : null), "className attr = " + r);

    elem.setAttribute("className", "cls3");
    ok(elem.className === (v < 8 ? "cls3" : "cls2"), "elem.className = " + elem.className);
    r = elem.getAttribute("class");
    ok(r === "cls2", "class attr = " + r);
    r = elem.getAttribute("className");
    ok(r === "cls3", "className attr = " + r);
});