Issue #3277784 by Tim Bozeman, mrinalini9, larowlan: copyRawVariables should...

    foreach (array_intersect_key($defaults, $variables) as $key => $value) {

      $raw_variables[$key] = $value;

    }

    // Route defaults that do not start with a leading "_" are also

    // parameters, even if they are not included in path or host patterns.

    foreach ($route->getDefaults() as $name => $value) {

      if (!isset($raw_variables[$name]) && substr($name, 0, 1) !== '_') {

        $raw_variables[$name] = $value;

      }

    }

    return new ParameterBag($raw_variables);

  }

   */

  public function testCopyRawVariables() {

    $route = new Route('/test/{id}');

    $route->setDefault('node_type', 'page');

    $defaults = [

      RouteObjectInterface::ROUTE_OBJECT => $route,

      'id' => '1',

        return $defaults;

      });

    $expected = new ParameterBag(['id' => 1]);

    $expected = new ParameterBag([

      'id' => 1,

      'node_type' => 'page',

    ]);

    $result = $this->paramConversionEnhancer->enhance($defaults, new Request());

    $this->assertEquals($result['_raw_variables'], $expected);

  }