class MenuTreeDataTestCase

class MenuTreeDataTestCase extends DrupalUnitTestCase {
    
    /**
     * Dummy link structure acceptable for menu_tree_data().
     */
    var $links = array(
        1 => array(
            'mlid' => 1,
            'depth' => 1,
        ),
        2 => array(
            'mlid' => 2,
            'depth' => 1,
        ),
        3 => array(
            'mlid' => 3,
            'depth' => 2,
        ),
        4 => array(
            'mlid' => 4,
            'depth' => 3,
        ),
        5 => array(
            'mlid' => 5,
            'depth' => 1,
        ),
    );
    public static function getInfo() {
        return array(
            'name' => 'Menu tree generation',
            'description' => 'Tests recursive menu tree generation functions.',
            'group' => 'Menu',
        );
    }
    
    /**
     * Validate the generation of a proper menu tree hierarchy.
     */
    function testMenuTreeData() {
        $tree = menu_tree_data($this->links);
        // Validate that parent items #1, #2, and #5 exist on the root level.
        $this->assertSameLink($this->links[1], $tree[1]['link'], 'Parent item #1 exists.');
        $this->assertSameLink($this->links[2], $tree[2]['link'], 'Parent item #2 exists.');
        $this->assertSameLink($this->links[5], $tree[5]['link'], 'Parent item #5 exists.');
        // Validate that child item #4 exists at the correct location in the hierarchy.
        $this->assertSameLink($this->links[4], $tree[2]['below'][3]['below'][4]['link'], 'Child item #4 exists in the hierarchy.');
    }
    
    /**
     * Check that two menu links are the same by comparing the mlid.
     *
     * @param $link1
     *   A menu link item.
     * @param $link2
     *   A menu link item.
     * @param $message
     *   The message to display along with the assertion.
     * @return
     *   TRUE if the assertion succeeded, FALSE otherwise.
     */
    protected function assertSameLink($link1, $link2, $message = '') {
        return $this->assert($link1['mlid'] == $link2['mlid'], $message ? $message : 'First link is identical to second link');
    }

}