using ytLive.Services;
using Xunit;

namespace ytLive.Tests;

public class TransitionFadeTests
{
    [Fact]
    public void Fade_Without_A_From_Frame_Requests_Capture_And_Blends_Once_Supplied()
    {
        var transition = new TransitionService();
        var to = new VideoFrame(2, 2, Enumerable.Repeat((byte)255, 16).ToArray());
        var from = new VideoFrame(2, 2, new byte[16]);

        transition.Start(TransitionType.Fade, 300, null);
        Assert.True(transition.CaptureRequested);

        transition.SupplyFromFrame(from);
        Assert.False(transition.CaptureRequested);

        transition.Tick(150);
        var blended = transition.BlendFrame(to);
        Assert.NotSame(to, blended);
        Assert.NotEqual((byte)255, blended.BgraPixels[0]);
    }
}