text: // Boost.Geometry (aka GGL, Generic Geometry Library)
  //
  // Copyright (c) 2011-2015 Barend Gehrels, Amsterdam, the Netherlands.
  // Use, modification and distribution is subject to the Boost Software License,
  // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  // http://www.boost.org/LICENSE_1_0.txt)
  
  #include <geometry_test_common.hpp>
  
  #include <boost/geometry/algorithms/num_interior_rings.hpp>
  
  #include <boost/geometry/io/wkt/wkt.hpp>
  
  #include <boost/geometry/geometries/geometries.hpp>
  #include <boost/geometry/geometries/point_xy.hpp>
  
  template <typename Geometry>
  void test_geometry(std::string const& wkt, std::size_t expected)
  {
      Geometry geometry;
      bg::read_wkt(wkt, geometry);
      std::size_t detected = bg::num_interior_rings(geometry);
      BOOST_CHECK_MESSAGE(detected == expected,
          "num_interior_rings: " << wkt
          << " -> Expected: " << expected
          << " detected: " << detected);
  }
  
  
  template <typename Point>
  void test_all()
  {
      typedef bg::model::polygon<Point> poly;
      typedef bg::model::multi_polygon<poly> mpoly;
  
      test_geometry<poly>("POLYGON((0 0,0 10,10 0,0 0),(1 1,1 9,9 1,1 1))", 1);
      test_geometry<mpoly>("MULTIPOLYGON(((0 0,0 10,10 0,0 0),(1 1,1 9,9 1,1 1)),((0 0,0 10,10 0,0 0),(1 1,1 4,4 1,1 1),(5 1,5 4,9 1,5 1)))", 3);
  }
  
  
  int test_main( int , char* [] )
  {
      test_all<bg::model::d2::point_xy<double> >();
  
      return 0;
  }
  