public function testValidId()
{
$a = array();
$a[] = self::$db->load(null);
$a[] = self::$db->load('');
$a[] = self::$db->load(0);
$ex = array(null, null, null);
$this->assertEquals($ex, $a);
}
/**
* Load index
*/
public function restore()
{
$index = $this->db->load('_' . $this->name . '_index');
$this->map = @$index['map'];
$this->inverse = @$index['inverse'];
if (empty($this->map)) {
$this->map = array();
}
if (empty($this->inverse)) {
$this->inverse = array();
}
$this->sort();
// json does not guarantee sorted storage
}
