public void TestToCompare()
        {
            var fraction1 = new SimpleFraction(3, 8);
            var fraction2 = new SimpleFraction(5, 9);
            var fraction3 = new SimpleFraction(5, 9);

            Assert.AreEqual(-1, fraction1.CompareTo(fraction2));
            Assert.AreEqual(1, fraction2.CompareTo(fraction1));
            Assert.AreEqual(0, fraction2.CompareTo(fraction3));
        }
        public void CompareNotEqualsTest()
        {
            //Arrange
            var firstFraction  = new SimpleFraction(1, 2);
            var secondFraction = new SimpleFraction(1, 4);
            var expectedResult = 1;

            //Act
            var result = firstFraction.CompareTo(secondFraction);

            //Assert
            Assert.AreEqual(expectedResult, result);
        }