public void SumTest() { var test = new Polinom(new List <Tuple <double, int> > { new Tuple <double, int> (5, 4), new Tuple <double, int> (5, 3), new Tuple <double, int> (1, 2), new Tuple <double, int> (-11, 0) }); test.Sum(new Odnochlen(1, 4)); var test2 = new Polinom(new List <Tuple <double, int> > { new Tuple <double, int> (6, 4), new Tuple <double, int> (5, 3), new Tuple <double, int> (1, 2), new Tuple <double, int> (-11, 0), new Tuple <double, int> (0, 0) }); Assert.AreEqual(true, test2.ToString() == test.ToString()); }