var global = this;
var ssstests = new function ssstests() {
    var ssstests = this;
    this.init = function init() {
        var iframe = this.iframe = document.createElement('iframe');
        iframe.style.position = 'absolute';
        iframe.style.left = '-1000px';
        iframe.width = '100px';
        document.getElementsByTagName('body')[0].appendChild(iframe);
        iframe.src = 'about:blank';
        iframe.contentWindow.onload = function() {
            ssstests.editor = new SSSEditor(iframe.contentWindow);
            ssstests.run_tests();
        };
    };

    this.setup = function setup() {
        var b = ssstests.iframe.contentDocument
            .getElementsByTagName('body')[0];
        b.innerHTML = '';
    };

    this.teardown = function teardown() {
        var b = ssstests.iframe.contentDocument
            .getElementsByTagName('body')[0];
        while (b.hasChildNodes()) {
            b.removeChild(b.firstChild);
        };
    };
    
    this.run_tests = function run_tests() {
        for (var attr in ssstests) {
            if (attr.indexOf('test_') == 0) {
                var value = ssstests[attr];
                if (typeof value == 'function') {
                    ssstests.setup();
                    try {
                        value();
                        ssstests.report_success(attr);
                    } catch(e) {
                        ssstests.report_failure(attr, e);
                    };
                    ssstests.teardown();
                };
            };
        };
    };

    this.report_success = function report_success(funcname) {
        ssstests.print(funcname + '(): ok');
    };

    this.report_failure = function report_failure(funcname, error) {
        ssstests.print(funcname + '(): ERROR\n' +
                       error.toString());
    };

    this.print = function print(msg) {
        var pre = document.createElement('pre');
        pre.appendChild(document.createTextNode(msg));
        var body = document.getElementsByTagName('body')[0];
        body.appendChild(pre);
    };

    // actual tests
    this.test_simple_em = function test_simple_em() {
        var editor = ssstests.editor;
        var win = editor.window;
        win.focus();
        var doc = win.document;
        var body = doc.getElementsByTagName('body')[0];
        var text = doc.createTextNode('foo bar baz');
        body.appendChild(text);

        var sel = win.getSelection();
        var range = sel.getRangeAt(0);
        range.setStart(text, 4);
        range.setEnd(text, 7);
        editor.addElement('em');
        testing.assertEquals(body.innerHTML, 'foo <em>bar</em> baz');

        var sel = win.getSelection();
        var range = sel.getRangeAt(0);
        testing.assertEquals(range.toString(), 'bar');
        editor.addElement('em');
        testing.assertEquals(body.innerHTML, 'foo bar baz');
    };

    this.test_spanning_em = function test_spanning_em() {
        var editor = ssstests.editor;
        var win = editor.window;
        win.focus();
        var doc = win.document;
        var body = doc.getElementsByTagName('body')[0];
        body.innerHTML = 'foo <div>bar</div> baz';

        var sel = win.getSelection();
        var range = sel.getRangeAt(0);
        range.setStart(body.childNodes[0], 2);
        range.setEnd(body.childNodes[2], 2);
        editor.addElement('em');
        testing.assertEquals(
            body.innerHTML,
            'fo<em>o </em><div><em>bar</em></div><em> b</em>az');
    };

    this.test_half_spanning_em = function test_half_spanning_em() {
        var editor = ssstests.editor;
        var win = editor.window;
        win.focus();
        var doc = win.document;
        var body = doc.getElementsByTagName('body')[0];
        body.innerHTML = 'foo <div>bar</div> baz';

        var sel = win.getSelection();
        var range = sel.getRangeAt(0);
        range.setStart(body.childNodes[0], 2);
        range.setEnd(body.childNodes[1].childNodes[0], 2);
        editor.addElement('em');
        testing.assertEquals(
            body.innerHTML, 'fo<em>o </em><div><em>ba</em>r</div> baz');
    };

    this.test_half_spanning_em_revert =
            function test_half_spanning_em_revert() {
        var editor = ssstests.editor;
        var win = editor.window;
        win.focus();
        var doc = win.document;
        var body = doc.getElementsByTagName('body')[0];
        body.innerHTML = 'fo<em>o </em><div><em>ba</em>r</div> baz';

        var sel = win.getSelection();
        var range = sel.getRangeAt(0);
        range.setStart(body.childNodes[1], 0);
        range.setEnd(body.childNodes[2].childNodes[0], 1);
        top.testing.debug('range: ' + range);
        editor.addElement('em');
        testing.assertEquals(body.innerHTML, 'foo <div>bar</div> baz');
    };

    this.test_half_spanning_em_revert_partial =
            function test_half_spanning_em_revert_partial() {
        var editor = ssstests.editor;
        var win = editor.window;
        win.focus();
        var doc = win.document;
        var body = doc.getElementsByTagName('body')[0];
        body.innerHTML = 'fo<em>o </em><div><em>ba</em>r</div> baz';

        var sel = win.getSelection();
        var range = sel.getRangeAt(0);
        range.setStart(body.childNodes[1], 0);
        range.setEnd(body.childNodes[3], 2);
        editor.addElement('em');
        testing.assertEquals(
            body.innerHTML, 'foo <div>ba<em>r</em></div><em> b</em>az');
    };
}();