public void GivenFeetAndFeet_WhenFirstNull_ShouldReturnFalse()
        {
            QuantityMeasurement feet1 = null;
            QuantityMeasurement feet2 = new QuantityMeasurement(QuantityMeasurement.Unit.FEET, 0.0);
            bool isEqual = feet2.Equals(feet1);

            Assert.IsFalse(isEqual);
        }
        public void GivenInchAndInch_WhenFirstNull_ShouldReturnFalse()
        {
            QuantityMeasurement inch1 = null;
            QuantityMeasurement inch2 = new QuantityMeasurement(QuantityMeasurement.Unit.INCH, 0.0);;
            bool isEqual = inch2.Equals(inch1);

            Assert.IsFalse(isEqual);
        }