1 files changed, 79 insertions, 0 deletions
diff --git a/libs/geometry/test/algorithms/detail/as_range.cpp b/libs/geometry/test/algorithms/detail/as_range.cpp
new file mode 100644
index 0000000000..dd6aabf281
--- /dev/null
+++ b/libs/geometry/test/algorithms/detail/as_range.cpp
@@ -0,0 +1,79 @@
+// Boost.Geometry (aka GGL, Generic Geometry Library)
+// Unit Test
+
+// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
+// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
+// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
+
+// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
+// (geolib/GGL), copyright (c) 1995-2010 Geodan, 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/views/detail/range_type.hpp>
+#include <boost/geometry/algorithms/detail/as_range.hpp>
+
+#include <boost/geometry/core/cs.hpp>
+#include <boost/geometry/geometries/geometries.hpp>
+
+#include <boost/geometry/io/wkt/read.hpp>
+
+template <int D, typename Range>
+double sum(Range const& range)
+{
+    double s = 0.0;
+    for (typename boost::range_const_iterator<Range>::type it = boost::begin(range);
+        it != boost::end(range); ++it)
+    {
+        s += bg::get<D>(*it);
+    }
+    return s;
+}
+
+template <typename G>
+void test_geometry(std::string const& wkt, double expected_x, double expected_y)
+{
+    G geometry;
+
+    // Declare a range-type, compatible with boost::range,
+    // such that range_iterator etc could be called
+    typedef typename bg::detail::range_type<G>::type range_type;
+
+    bg::read_wkt(wkt, geometry);
+
+    double s = sum<0>(bg::detail::as_range<range_type>(geometry));
+    BOOST_CHECK_CLOSE(s, expected_x, 0.001);
+
+    s = sum<1>(bg::detail::as_range<range_type>(geometry));
+    BOOST_CHECK_CLOSE(s, expected_y, 0.001);
+}
+
+
+template <typename P>
+void test_all()
+{
+    // As-range utility should consider a geometry as a range, so
+    // linestring stays linestring
+    test_geometry<bg::model::linestring<P> >("LINESTRING(1 2,3 4)", 4, 6);
+
+    // polygon will only be outer-ring
+    test_geometry<bg::model::polygon<P> >("POLYGON((1 2,3 4))", 4, 6);
+    test_geometry<bg::model::polygon<P> >("POLYGON((1 2,3 4),(5 6,7 8,9 10))", 4, 6);
+
+    // the utility is useful for:
+    // - convex hull (holes do not count)
+    // - envelope (idem)
+}
+
+int test_main(int, char* [])
+{
+    test_all<bg::model::point<double, 2, bg::cs::cartesian> >();
+
+    return 0;
+}