public void And()
        {
            var sut = new HamacherEvaluation();

            var a = 0.2;
            var b = 0.6;

            var result = sut.And(a, b);

            Assert.AreEqual((a*b)/(a + b - a*b), result);
        }
        public void ToStringTest()
        {
            var sut = new HamacherEvaluation();

            Assert.AreEqual("Hamacher Evaluation", sut.ToString());
        }