using Azimuth;
using UnitTestSharp;

namespace Glass.Blacklight.UnitTests
{
    public class TintLookTests : TestFixture
    {
        public static AffineMatrix Moved()
        {
            AffineMatrix returnMe = AffineMatrix.Identity;
            returnMe.Translate(new Vector(1, 2));
            return returnMe;
        }

        public static TintLook LookWith(ITexture texture)
        {
            return new TintLook { Texture = texture, Transform = AffineMatrix.Identity, Space = TintSpace.Screen };
        }

        public class MatchesTests : TestFixture
        {
            public void SameTextureTransformAndSpace_Match()
            {
                var texture = new BlacklightGlassTexture();

                CheckTrue(LookWith(texture).Matches(LookWith(texture)));
            }

            public void NoTextureOnEitherSide_Match()
            {
                CheckTrue(LookWith(null).Matches(LookWith(null)));
            }

            public void DifferentTextureObjects_DoNotMatch()
            {
                CheckFalse(LookWith(new BlacklightGlassTexture()).Matches(LookWith(new BlacklightGlassTexture())));
            }

            public void TextureOnOneSideOnly_DoNotMatch()
            {
                CheckFalse(LookWith(new BlacklightGlassTexture()).Matches(LookWith(null)));
            }

            public void DifferentTransform_DoNotMatch()
            {
                var texture = new BlacklightGlassTexture();
                TintLook moved = LookWith(texture);
                moved.Transform = Moved();

                CheckFalse(LookWith(texture).Matches(moved));
            }

            public void DifferentSpace_DoNotMatch()
            {
                var texture = new BlacklightGlassTexture();
                TintLook model = LookWith(texture);
                model.Space = TintSpace.Model;

                CheckFalse(LookWith(texture).Matches(model));
            }
        }
    }
}