using System.Linq;
using Xunit;
using ytLive.Services;

namespace ytLive.Tests;

public class WipeTransitionTests
{
    [Fact]
    public void Wipe_At_Half_Reveals_The_New_Scene_On_The_Left_Half()
    {
        var transition = new TransitionService();
        var to = new VideoFrame(4, 1, Enumerable.Repeat((byte)255, 16).ToArray());
        var from = new VideoFrame(4, 1, new byte[16]);

        transition.Start(TransitionType.Wipe, 300, from);
        transition.Tick(150);
        var blended = transition.BlendFrame(to);

        Assert.Equal((byte)255, blended.BgraPixels[0]);
        Assert.Equal((byte)255, blended.BgraPixels[4]);
        Assert.Equal((byte)0, blended.BgraPixels[8]);
        Assert.Equal((byte)0, blended.BgraPixels[12]);
    }
}