[test] [length] Tests for length algorithm.

test/algorithms/buffer/buffer.cpp

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+// 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.
+
+// This file was modified by Oracle on 2016.
+// Modifications copyright (c) 2016, Oracle and/or its affiliates.
+// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
+
+// 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 <boost/variant/variant.hpp>
+
+#include <geometry_test_common.hpp>
+
+#include <boost/geometry/algorithms/buffer.hpp>
+#include <boost/geometry/algorithms/equals.hpp>
+#include <boost/geometry/core/coordinate_type.hpp>
+
+#include <boost/geometry/strategies/strategies.hpp>
+
+#include <boost/geometry/geometries/point.hpp>
+#include <boost/geometry/geometries/box.hpp>
+#include <test_common/test_point.hpp>
+
+
+template <typename P>
+void test_all()
+{
+    typedef typename bg::coordinate_type<P>::type coordinate_type;
+
+    P p1(0, 0);
+    P p2(2, 2);
+
+    typedef bg::model::box<P> box_type;
+
+    box_type b1(p1, p2);
+    box_type b2;
+    bg::buffer(b1, b2, coordinate_type(2));
+
+    box_type expected(P(-2, -2), P(4, 4));
+    BOOST_CHECK(bg::equals(b2, expected));
+
+    boost::variant<box_type> v(b1);
+    bg::buffer(v, b2, coordinate_type(2));
+
+    BOOST_CHECK(bg::equals(b2, expected));
+}
+
+int test_main(int, char* [])
+{
+    test_all<bg::model::point<int, 2, bg::cs::cartesian> >();
+    test_all<bg::model::point<float, 2, bg::cs::cartesian> >();
+    test_all<bg::model::point<double, 2, bg::cs::cartesian> >();
+
+#ifdef HAVE_TTMATH
+    test_all<bg::model::point<ttmath_big, 2, bg::cs::cartesian> >();
+#endif
+    return 0;
+}