// Copyright (c) Six Labors and contributors.
// Licensed under the Apache License, Version 2.0.

using System;
using System.IO;

using SixLabors.ImageSharp.Formats;
using SixLabors.ImageSharp.Formats.Bmp;
using Xunit;

namespace SixLabors.ImageSharp.Tests.Formats.Bmp
{
    public class BmpFileHeaderTests
    {
        private static readonly byte[] Data = BitConverter.GetBytes(BmpConstants.TypeMarkers.Bitmap);

        private MemoryStream Stream { get; } = new MemoryStream(Data);

        [Fact]
        public void TestWrite()
        {
            var header = new BmpFileHeader(1, 2, 3, 4);

            var buffer = new byte[14];

            header.WriteTo(buffer);

            Assert.Equal("AQACAAAAAwAAAAQAAAA=", Convert.ToBase64String(buffer));
        }

        [Fact]
        public void ImageLoad_WithoutEnoughData_Throws_UnknownImageFormatException()
        {
            Assert.Throws<UnknownImageFormatException>(() =>
            {
                using (Image.Load(Configuration.Default, this.Stream, out IImageFormat _))
                {
                }
            });
        }
    }
}