using UnitTestSharp;

namespace Blacklight.Core.UnitTests
{
    public class ReinterpretTests : TestFixture
    {
        public struct Pair
        {
            public int First;
            public int Second;
        }

        public class AsTests : TestFixture
        {
            public void ReadsTheValueAsTheTargetType()
            {
                var source = new Pair { First = 7, Second = 9 };

                Pair read = Reinterpret.As<Pair, Pair>(source);

                CheckEqual(7, read.First);
                CheckEqual(9, read.Second);
            }

            public void ReturnsAReferenceToTheSourcesOwnStorage()
            {
                var source = new Pair { First = 7, Second = 9 };

                Reinterpret.As<Pair, Pair>(source).Second = 11;

                CheckEqual(11, source.Second);
            }

            public void ViewsTheSameBitsAsADifferentType()
            {
                uint source = 0x3F800000u;

                CheckEqual(1.0f, Reinterpret.As<uint, float>(source));
            }
        }
    }
}