public void CompareToIsImplemented()
        {
            RatioChangeRate decimalfractionpersecond = RatioChangeRate.FromDecimalFractionsPerSecond(1);

            Assert.Equal(0, decimalfractionpersecond.CompareTo(decimalfractionpersecond));
            Assert.True(decimalfractionpersecond.CompareTo(RatioChangeRate.Zero) > 0);
            Assert.True(RatioChangeRate.Zero.CompareTo(decimalfractionpersecond) < 0);
        }
        public void CompareToThrowsOnNull()
        {
            RatioChangeRate decimalfractionpersecond = RatioChangeRate.FromDecimalFractionsPerSecond(1);

            Assert.Throws <ArgumentNullException>(() => decimalfractionpersecond.CompareTo(null));
        }
        public void CompareToThrowsOnTypeMismatch()
        {
            RatioChangeRate decimalfractionpersecond = RatioChangeRate.FromDecimalFractionsPerSecond(1);

            Assert.Throws <ArgumentException>(() => decimalfractionpersecond.CompareTo(new object()));
        }