(function () {

    'use strict';

    test('LayoutMode.getSegmentSize', function () {

        var iso = new Isotope('#get-segment-size', {
            layoutMode: 'cellsByRow',
            itemSelector: '.item',
            cellsByRow: {
                columnWidth: 17,
                rowHeight: 23
            }
        });

        var cellsByRow = iso.modes.cellsByRow;
        equal(cellsByRow.columnWidth, 17, 'explicit columnWidth option set');

        // set element sizing
        iso.options.cellsByRow.columnWidth = '.grid-sizer';
        iso.options.cellsByRow.rowHeight = '.grid-sizer';
        cellsByRow.getColumnWidth();
        cellsByRow.getRowHeight();
        equal(cellsByRow.columnWidth, 57, 'element sizing columnWidth');
        equal(cellsByRow.rowHeight, 47, 'element sizing rowHeight');

        // default to first item
        delete iso.options.cellsByRow.columnWidth;
        delete iso.options.cellsByRow.rowHeight;
        cellsByRow.getColumnWidth();
        cellsByRow.getRowHeight();
        equal(cellsByRow.columnWidth, 60, 'first item columnWidth');
        equal(cellsByRow.rowHeight, 30, 'first item rowHeight');

    });

})();
        equal(cellsByRow.rowHeight, 23, 'explicit rowHeight option set');