Prado\Web\THttpRequest::contains PHP Method

    public function contains($key)
    {
        return isset($this->_items[$key]) || array_key_exists($key, $this->_items);
    }

 public function testContains()
 {
     $request = new THttpRequest();
     $request->init(null);
     // Simulate a request with just a service
     $_GET['page'] = 'Home';
     $request->resolveRequest(array('page'));
     self::assertTrue($request->contains('page'));
     self::assertFalse($request->contains('param'));
 }