﻿// Copyright Dirk Lemstra https://github.com/dlemstra/Magick.NET.
// Licensed under the Apache License, Version 2.0.

using System;
using ImageMagick;
using Xunit;

namespace Magick.NET.Tests
{
    public partial class MagickImageTests
    {
        public class TheAffineTransformMethod
        {
            [Fact]
            public void ShouldChangeTheSizeOfTheImage()
            {
                using (var image = new MagickImage(Files.Builtin.Wizard))
                {
                    var affineMatrix = new DrawableAffine(1, 0.5, 0, 0, 0, 0);
                    image.AffineTransform(affineMatrix);

                    Assert.Equal(482, image.Width);
                    Assert.Equal(322, image.Height);
                }
            }

            [Fact]
            public void ShouldThrowExceptionWhenAffineMatrixIsNull()
            {
                using (var image = new MagickImage(MagickColors.Purple, 1, 1))
                {
                    Assert.Throws<ArgumentNullException>("affineMatrix", () => image.AffineTransform(null));
                }
            }
        }
    }
}
