public function testGetDescendants()
{
$this->assertEquals(array(), $this->helper->getDescendants(null));
$expected = array('/a/b', '/a/b/c', '/a/b/d', '/a/b/e', '/a/f', '/a/f/g', '/a/f/g/h', '/a/i');
$this->assertEquals($expected, $this->helper->getDescendants('/a'));
$expected = array('/a/b', '/a/f', '/a/i');
$this->assertEquals($expected, $this->helper->getDescendants('/a', 1));
}
