/**
     * This is not a real unit test, but an experimental attempt at building a HTML table
     * based on the sortorders set for each test grade_item.
     */
    function test_grade_build_table() {
        // Build an associative array of grade_items
        $tree = array();

        // 1. Fetch all top-level categories for this course, with all children preloaded, sorted by sortorder
        $topcats = grade_category::get_tree($this->courseid);
        $topcathtml = '<tr>';

        foreach ($topcats as $topcat) {
            $cathtml = '<tr>';
            $itemcount = 0;
            $itemhtml = '<tr>';

            foreach ($topcat['children'] as $catkey => $cat) {
                $catitemcount = 0;

                foreach ($cat['children'] as $item) {
                    $itemcount++;
                    $catitemcount++;
                    $itemhtml .= '<td>' . $item['object']->itemname . '</td>';
                }

                $cat['object']->load_grade_item();
                $cathtml .= '<td colspan="' . $catitemcount . '">' . $cat['object']->fullname . '</td>';
            }
            $topcathtml .= '<th colspan="' . $itemcount . '">' . $topcat['object']->fullname . '</th>';
        }

        $topcathtml .= '</tr>';
        $cathtml .= '</tr>';
        $itemhtml .= '</tr>';

        echo "<table style=\"text-align: center\" border=\"1\">$topcathtml$cathtml$itemhtml</table>";

    }