#include <math.h>

#ifdef HAS_OPENCV3
#include <opencv2/core.hpp> //Any OPENCV3 code
#else
#include <opencv2/core/core.hpp> //Any Opencv2 code
#endif
using namespace cv;
#include <cxxtest/TestSuite.h>

#include "geometry.h"

class TestLine : public CxxTest::TestSuite
{
    public:
        void testBisector(void)
        {
            // x-y = 0
            auto l = get_line(Point(0,0), Point(1,1));
            TS_ASSERT_EQUALS(l(0), -l(1));
            TS_ASSERT_EQUALS(l(2), 0);
        }

        void testBisectorNegative(void)
        {
            // x+y = 0
            auto l = get_line(Point(0,0), Point(1,-1));
            TS_ASSERT_EQUALS(l(0), l(1));
            TS_ASSERT_EQUALS(l(2), 0);
        }

        void testConstant(void)
        {
            // y = 42
            // 0x+1y-42=0
            auto l = get_line(Point(0,42), Point(10,42));
            TS_ASSERT_EQUALS(l(0), 0);
            TS_ASSERT_EQUALS(l(2), -42*l(1));
        }

        void testVertical(void)
        {
            // x = 42
            // 1x+0y-42=0
            auto l = get_line(Point(42,0), Point(42,10));
            TS_ASSERT_EQUALS(l(1), 0);
            TS_ASSERT_EQUALS(l(2), -42*l(0));
        }
};