using System;
using UnitTestSharp;

namespace Blacklight.Core.UnitTests
{
    public class GraphicsDeviceFailedExceptionTests : TestFixture
    {
        public class CtorTests : TestFixture
        {
            public void KeepsTheFailure()
            {
                var exception = new GraphicsDeviceFailedException(GraphicsDeviceFailure.Removed, innerException: null);

                CheckEqual(GraphicsDeviceFailure.Removed, exception.Failure);
            }

            public void KeepsTheInnerException()
            {
                var inner = new InvalidOperationException();

                var exception = new GraphicsDeviceFailedException(GraphicsDeviceFailure.Hung, inner);

                CheckEqual(inner, exception.InnerException);
            }

            public void EachFailure_HasItsOwnMessage()
            {
                string hung = new GraphicsDeviceFailedException(GraphicsDeviceFailure.Hung, null).Message;
                string removed = new GraphicsDeviceFailedException(GraphicsDeviceFailure.Removed, null).Message;

                CheckNotEqual(hung, removed);
            }

            public void UndefinedFailure_Throws()
            {
                CheckThrow(typeof(ArgumentOutOfRangeException));
                new GraphicsDeviceFailedException((GraphicsDeviceFailure)(-1), innerException: null);
            }
        }
    }
}