public void Size3F_TryParse_FailsForInvalidStrings()
        {
            var result    = default(Size3F);
            var succeeded = Size3F.TryParse("foo", out result);

            TheResultingValue(succeeded).ShouldBe(false);
        }
        public void Size3F_TryParse_SucceedsForValidStrings()
        {
            var str    = "123.45 456.78 789.99";
            var result = default(Size3F);

            if (!Size3F.TryParse(str, out result))
            {
                throw new InvalidOperationException("Unable to parse string to Size3F.");
            }

            TheResultingValue(result)
            .ShouldBe(123.45f, 456.78f, 789.99f);
        }