public function testHas()
{
$array = array('key 1' => 'value 1', 'key 2' => array('key 3' => array('key 4' => 'value 2')));
$structure = new Structure($array);
$this->assertTrue($structure->has('key 1'));
$this->assertTrue($structure->has('key 2'));
$this->assertTrue($structure->has('key 2[key 3]'));
$this->assertTrue($structure->has('key 2[key 3][key 4]'));
$this->assertFalse($structure->has('key 2[key 5]'));
}
