//
// Test Suite for C-API GEOSSegmentIntersection
#include <tut/tut.hpp>
// geos
#include <geos_c.h>
// std
#include <cstdarg>
#include <cstdio>
#include <cstdlib>

namespace tut
{
    //
    // Test Group
    //

    // Common data used in test cases.
    struct test_capigeossegmentintersection
    {
        static void notice(const char *fmt, ...)
        {
            std::fprintf( stdout, "NOTICE: ");

            va_list ap;
            va_start(ap, fmt);
            std::vfprintf(stdout, fmt, ap);
            va_end(ap);

            std::fprintf(stdout, "\n");
        }

        test_capigeossegmentintersection()
        {
            initGEOS(notice, notice);
        }

        ~test_capigeossegmentintersection()
        {
            finishGEOS();
        }
    };

    typedef test_group<test_capigeossegmentintersection> group;
    typedef group::object object;

    group test_capigeossegmentintersection_group("capi::GEOSSegmentIntersection");

    //
    // Test Cases
    //
    template<>
    template<>
    void object::test<1>()
    {
        // plain old intersection
        int result;
        double x,y;

        result = GEOSSegmentIntersection(0, 0, 10, 10,
                                         8, 0, 8, 10,
                                         &x, &y);

        ensure_equals(result, 1);
        ensure_equals(x, 8);
        ensure_equals(y, 8);
    }

    template<>
    template<>
    void object::test<2>()
    {
        // no intersection
        int result;
        double x,y;

        result = GEOSSegmentIntersection(0, 0, 10, 10,
                                         8, 0, 8,  2,
                                         &x, &y);

        ensure_equals(result, -1);
    }

} // namespace tut
