using System;
using Amphora;
using Ariadne.UnitTests;
using UnitTestSharp;
using Vellum;

namespace Ariadne.Vellum.UnitTests
{
    /// <summary>
    /// Saves a script paused on a deadline, which is a TimeSpan kept in a local.
    /// </summary>
    public class DeadlineSaveTests : TestFixture
    {
        public static TickContext At(ExceptionSandbox sandbox, double gameSeconds)
        {
            return new TickContext(sandbox, TimeSpan.FromMilliseconds(16), TimeSpan.FromSeconds(gameSeconds));
        }

        public class FromNodeTests : TestFixture
        {
            public void DeadlineKeptInALocal_SurvivesTheSaveExactly()
            {
                var sandbox = new ExceptionSandbox(typeof(AriadneSites).Assembly);
                var gates = new Gates();
                var script = new DeadlineScript();
                script.Tick(gates, At(sandbox, 10));

                SaveSession session = ArcConverterTests.Session();
                var loaded = (DeadlineScript)session.FromNode(session.ToNode(script, typeof(DeadlineScript)),
                    typeof(DeadlineScript));
                loaded.Tick(gates, At(sandbox, 10.9));
                CheckFalse(loaded.Done);
                loaded.Tick(gates, At(sandbox, 11));

                CheckTrue(loaded.Done);
            }
        }
    }
}