public void ToExpansionBounds_OverridesAnyInitialValuesOnLowerAndUpperBound_WhenCalledOnInitialisedBounds()
        {
            var lowerBound = 12;
            var upperBound = lowerBound + 1;
            var interval   = new IntegerInterval();

            interval.TrySetValue(1, 2);

            interval.ToExpansionBounds(out lowerBound, out upperBound);

            Assert.AreEqual(1, lowerBound);
            Assert.AreEqual(2, upperBound);
        }