(function(win, TableFilter){

    var tf = new TableFilter('demo', {
        base_path: '../dist/tablefilter/',
        extensions:[{
            name: 'filtersVisibility'
        }]
    });
    tf.init();

    var extTargetElement = document.createElement('div');
    extTargetElement.setAttribute('id', 'test');
    document.body.insertBefore(extTargetElement, tf.tbl);

    module('Sanity checks');
    test('Filters visibility extension', function() {
        var ext = tf.ExtRegistry.filtersVisibility;
        deepEqual(tf instanceof TableFilter, true, 'TableFilter instanciated');
        notEqual(ext, null, 'Extension instanciated');
        deepEqual(ext.initialized, true, 'Extension initialized');
    });

    module('Check UI');
    test('UI elements', function() {
        var ext = tf.ExtRegistry.filtersVisibility;
        var cont = ext.contEl;
        var btn = ext.btnEl;
        deepEqual(cont.nodeName, 'SPAN', 'Container element');
        deepEqual(btn.nodeName, 'A', 'Button element');
        deepEqual(btn.title, 'Toggle filters', 'Button tooltip');
        deepEqual(btn.firstChild.nodeName, 'IMG', 'Image element');
        deepEqual(btn.firstChild.alt, 'Collapse filters', 'Button tooltip');
    });

    module('Check behaviours');
    test('Toggle filters', function() {
        var ext = tf.ExtRegistry.filtersVisibility;
        ext.toggle();
        var filtersRow = tf.tbl.rows[tf.getFiltersRowIndex()];
        deepEqual(filtersRow.style.display, 'none', 'Filters hidden');
        ext.toggle();
        deepEqual(filtersRow.style.display, '', 'Filters displayed');
    });

    test('Remove extension', function() {
        var ext = tf.ExtRegistry.filtersVisibility;
        ext.destroy();
        deepEqual(ext.contEl, null, 'Container element removed');
        deepEqual(ext.btnEl, null, 'Button element removed');
        deepEqual(ext.initialized, false, 'Extension not initialized');
    });

    test('Button without icon', function() {
        tf.destroy();
        tf = new TableFilter('demo', {
            base_path: '../dist/tablefilter/',
            extensions:[{
                name: 'filtersVisibility',
                enable_icon: false
            }]
        });
        tf.init();
        var ext = tf.ExtRegistry.filtersVisibility;
        deepEqual(ext.contEl.nodeName, 'SPAN', 'Container element');
        deepEqual(ext.btnEl.nodeName, 'A', 'Button element');
        deepEqual(ext.btnEl.innerHTML, 'Toggle filters', 'Expected text');
    });

    test('Button in external Container', function() {
        tf.destroy();
        tf = new TableFilter('demo', {
            base_path: '../dist/tablefilter/',
            extensions:[{
                name: 'filtersVisibility',
                target_id: 'test',
                btn_text: 'Hello'
            }]
        });
        tf.init();

        var ext = tf.ExtRegistry.filtersVisibility;
        var btn = ext.btnEl;
        deepEqual(
            extTargetElement.firstChild.nodeName, 'SPAN', 'Container element');
        deepEqual(btn.nodeName, 'A', 'Button element');
        deepEqual(btn.textContent || btn.innerText, 'Hello', 'Expected text');
    });

    test('Grid layout: filters hidden at start', function() {
        tf.destroy();
        tf = new TableFilter('demo', {
            base_path: '../dist/tablefilter/',
            grid_layout: true,
            extensions:[{
                name: 'filtersVisibility',
                visible_at_start: false
            }]
        });
        tf.init();

        var ext = tf.ExtRegistry.filtersVisibility;
        var gridLayout = tf.Cpt.gridLayout;
        var filtersRow = gridLayout.headTbl.rows[tf.getFiltersRowIndex()];
        var cont = ext.contEl;
        var btn = ext.btnEl;
        deepEqual(filtersRow.style.display, 'none', 'Filters hidden');
        deepEqual(cont.nodeName, 'SPAN', 'Container element');
        deepEqual(btn.nodeName, 'A', 'Button element');
    });

})(window, TableFilter);