public void UTNeg_hit()
        {
            Rectangle_object RO = new Rectangle_object();

            UTDraw(RO);
            Point p        = new Point(7, 9);
            bool  actual   = RO.Hit_testing(p);
            bool  expected = false;

            Assert.AreEqual(expected, actual);
        }
        public void UTPos_hit()
        {
            Rectangle_object RO = new Rectangle_object();

            UTDraw(RO);
            Point p        = new Point(3, 2);
            bool  actual   = RO.Hit_testing(p);
            bool  expected = true;

            Assert.AreEqual(expected, actual);
        }
        public void UTShift_Hit_neg()
        {
            Rectangle_object RO = new Rectangle_object();

            UTDraw(RO);
            Point p = new Point(10, 10);

            RO.Shift(p);
            Point p1       = new Point(7, 9);
            bool  actual   = RO.Hit_testing(p1);
            bool  expected = false;

            Assert.AreEqual(expected, actual);
        }