using Azimuth;
using UnitTestSharp;

namespace Blacklight.Bezier.UnitTests
{
    public class CubicSampleTests : TestFixture
    {
        public class CtorTests : TestFixture
        {
            public void AssignsThePixelAndBothInnerPoints()
            {
                var sample = new CubicSample(new Vector(1, 2), new Vector(3, 4), new Vector(5, 6));
                CheckEqual(new Vector(1, 2), sample.Pixel);
                CheckEqual(new Vector(3, 4), sample.P1);
                CheckEqual(new Vector(5, 6), sample.P2);
            }
        }

        public class PieceInFrameTests : TestFixture
        {
            public void RunsFromTheOriginToUnitX()
            {
                CubicPiece piece = CubicSample.PieceInFrame(new Vector(3, 4), new Vector(5, 6));
                CheckEqual(new Vector(0, 0), piece.P0);
                CheckEqual(new Vector(3, 4), piece.P1);
                CheckEqual(new Vector(5, 6), piece.P2);
                CheckEqual(new Vector(1, 0), piece.P3);
            }
        }

        public class ToPieceTests : TestFixture
        {
            public void UsesTheInnerPointsInTheFrame()
            {
                CubicPiece piece = new CubicSample(new Vector(1, 2), new Vector(3, 4), new Vector(5, 6)).ToPiece();
                CheckEqual(new Vector(0, 0), piece.P0);
                CheckEqual(new Vector(3, 4), piece.P1);
                CheckEqual(new Vector(5, 6), piece.P2);
                CheckEqual(new Vector(1, 0), piece.P3);
            }
        }
    }
}