Catalog/MaddoShared.ImageSharpTests/Helpers/TestImageFactory.cs

using System.IO;
using SixLabors.ImageSharp;
using SixLabors.ImageSharp.PixelFormats;
using SixLabors.ImageSharp.Processing;
using SixLabors.ImageSharp.Formats.Jpeg;
using SixLabors.ImageSharp.Metadata.Profiles.Exif;

namespace MaddoShared.ImageSharpTests.Helpers
{
    public static class TestImageFactory
    {
        public static string CreateSolidJpeg(string directory, string fileName, int width, int height, Rgba32 color)
        {
            Directory.CreateDirectory(directory);
            var path = Path.Combine(directory, fileName);
            using var img = new Image<Rgba32>(width, height, color);
            var encoder = new JpegEncoder { Quality = 90 };
            img.Save(path, encoder);
            return path;
        }

        public static string CreateSolidPng(string directory, string fileName, int width, int height, Rgba32 color)
        {
            Directory.CreateDirectory(directory);
            var path = Path.Combine(directory, fileName);
            using var img = new Image<Rgba32>(width, height, color);
            img.SaveAsPng(path);
            return path;
        }

        public static string CreateJpegWithExifOrientation(string directory, string fileName, int width, int height, Rgba32 color, ushort orientation)
        {
            Directory.CreateDirectory(directory);
            var path = Path.Combine(directory, fileName);
            using var img = new Image<Rgba32>(width, height, color);
            // Add EXIF orientation
            var profile = new ExifProfile();
            profile.SetValue(ExifTag.Orientation, orientation);
            img.Metadata.ExifProfile = profile;
            var encoder = new JpegEncoder { Quality = 90 };
            img.Save(path, encoder);
            return path;
        }
    }
}