(function(win, TableFilter) {

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

    module('Table 1: sanity checks');
    test('TableFilter object', function() {
        deepEqual(tf instanceof TableFilter, true, 'TableFilter instanciated');
        deepEqual(tf.id, 'demo', 'id check');
        deepEqual(tf.filtersRowIndex, 0, 'Filters row index');
        deepEqual(tf.getCellsNb(), 5, 'filters type collection length');
    });

    module('Table 1: DOM tests');
    test('Filters row', function() {
        equal(
            tf.dom().rows[0].className,
            'fltrow',
            'Filters row CSS class name'
        );
        equal(tf.getFilterElement(0).nodeName, 'INPUT', 'Filter DOM element');
        deepEqual(
            tf.dom().scrollWidth === tf.dom().clientWidth,
            true,
            'Horizontal scrollbar is not displayed'
        );
    });

    var tf1 = new TableFilter(
        document.querySelector('.test'),
        {
            base_path: '../dist/tablefilter/',
            responsive: true,
            filters_row_index: 1,
            btn: true
        }
    );
    tf1.init();

    var btn = document.querySelector('.' + tf1.btnCssClass);

    module('Table 2: sanity checks');
    test('TableFilter instance', function() {
        notEqual(tf1.id, null, 'id check');
        deepEqual(tf1.dom().classList.contains(tf1.prfxResponsive), true,
            'Responsive CSS class');
        equal(tf1.filtersRowIndex, 1, 'Filters row index');
        deepEqual(tf1.getCellsNb(), 5, 'filters type collection length');
    });

    module('Table 2: DOM tests');
    test('Filters row', function() {
        equal(
            tf1.dom().rows[1].className,
            'fltrow',
            'Filters row CSS class name'
        );
        equal(tf1.getFilterElement(0).nodeName, 'INPUT', 'Filter DOM element');
        deepEqual(
            tf1.dom().scrollWidth > tf1.dom().clientWidth,
            true,
            'Horizontal scrollbar is displayed'
        );
    });
    test('Filter button', function(){
        notEqual(btn, null, 'Button exists');
        deepEqual(btn.nodeName, 'INPUT', 'Expected element');
    });
    test('Filter button click event', function(){
        tf1.setFilterValue(4, '>30');
        btn.click();
        deepEqual(tf1.getValidRows().length, 2, 'Filter button event result');
    });

    test('Cannot init if initialised', function() {
        // setup
        var importFile = tf1.import;
        var hit = 0;
        tf1.import = function() { hit++; };
        tf1.initialized = true;

        // act
        tf1.init();

        // assert
        deepEqual(hit, 0, 'import not called');

        tf1.import = importFile;
    });

    test('Disable icons', function() {
        // setup
        tf1.destroy();
        tf1 = new TableFilter(
            document.querySelector('.test'),
            {
                base_path: '../dist/tablefilter/',
                btn: true,
                enable_icons: false
            }
        );

        // act
        tf1.init();

        // assert
        deepEqual(
            document.querySelector('.' + tf1.btnCssClass).value,
            'Go',
            'Filter button text'
        );
    });

    test('Defaults to flt_css_class if no filter class defined', function() {
        // setup
        tf1.destroy();
        tf1 = new TableFilter(
            document.querySelector('.test'),
            {
                base_path: '../dist/tablefilter/',
                btn: true
            }
        );

        // act
        tf1.fltSmallCssClass = null;
        tf1.init();

        // assert
        deepEqual(
            tf1.getFilterElement(4).className,
            'flt',
            'Default css class for filter'
        );
    });

    module('Tear-down');
    test('can destroy TableFilter DOM elements', function() {
        tf.destroy();
        tf1.destroy();

        deepEqual(tf.isInitialized(), false, 'Instance no longer initialised');
        deepEqual(tf1.getFilterElement(0), null, 'Filter 0 removed');
    });

    module('Edge cases');
    test('throws when no working DOM element', function() {
        throws(
            function() { new TableFilter('xyz'); },
            Error,
            'Throws Error when no DOM table'
        );
    });
    test('Can instantiate with wrong refRow', function() {
        var tf2 = new TableFilter('demo', -9);
        tf2.init();
        deepEqual(tf2.nbCells, 0, 'Expected number of columns');
    });

})(window, TableFilter);