ImageSharp/tests/ImageSharp.Tests/Formats/Png/PngDecoderCoreTests.cs

// <copyright file="JpegDecoderCoreTests.cs" company="James Jackson-South">
// Copyright (c) James Jackson-South and contributors.
// Licensed under the Apache License, Version 2.0.
// </copyright>

namespace ImageSharp.Tests
{
    using System.Text;
    using Xunit;

    using ImageSharp.Formats;

    public class PngDecoderCoreTests
    {
        [Fact]
        public void Decode_IgnoreMetadataIsFalse_TextChunckIsRead()
        {
            var options = new PngDecoderOptions()
            {
                IgnoreMetadata = false
            };

            TestFile testFile = TestFile.Create(TestImages.Png.Blur);

            using (Image image = testFile.CreateImage(options))
            {
                Assert.Equal(1, image.MetaData.Properties.Count);
                Assert.Equal("Software", image.MetaData.Properties[0].Name);
                Assert.Equal("paint.net 4.0.6", image.MetaData.Properties[0].Value);
            }
        }

        [Fact]
        public void Decode_IgnoreMetadataIsTrue_TextChunksAreIgnored()
        {
            var options = new PngDecoderOptions()
            {
                IgnoreMetadata = true
            };

            TestFile testFile = TestFile.Create(TestImages.Png.Blur);

            using (Image image = testFile.CreateImage(options))
            {
                Assert.Equal(0, image.MetaData.Properties.Count);
            }
        }

        [Fact]
        public void Decode_TextEncodingSetToUnicode_TextIsReadWithCorrectEncoding()
        {
            var options = new PngDecoderOptions()
            {
                TextEncoding = Encoding.Unicode
            };

            TestFile testFile = TestFile.Create(TestImages.Png.Blur);

            using (Image image = testFile.CreateImage(options))
            {
                Assert.Equal(1, image.MetaData.Properties.Count);
                Assert.Equal("潓瑦慷敲", image.MetaData.Properties[0].Name);
            }
        }
    }
}