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114 lines
4.0 KiB
114 lines
4.0 KiB
// Copyright (c) Six Labors and contributors.
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// Licensed under the Apache License, Version 2.0.
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using SixLabors.ImageSharp.Formats.Gif;
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using SixLabors.ImageSharp.Metadata;
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using SixLabors.ImageSharp.Metadata.Profiles.Exif;
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using SixLabors.ImageSharp.PixelFormats;
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using SixLabors.ImageSharp.Primitives;
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using Xunit;
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namespace SixLabors.ImageSharp.Tests
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{
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/// <summary>
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/// Tests the <see cref="ImageMetadata"/> class.
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/// </summary>
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public class ImageMetaDataTests
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{
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[Fact]
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public void ConstructorImageMetaData()
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{
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var metaData = new ImageMetadata();
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var exifProfile = new ExifProfile();
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var imageProperty = new ImageProperty("name", "value");
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metaData.ExifProfile = exifProfile;
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metaData.HorizontalResolution = 4;
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metaData.VerticalResolution = 2;
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metaData.Properties.Add(imageProperty);
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ImageMetadata clone = metaData.DeepClone();
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Assert.Equal(exifProfile.ToByteArray(), clone.ExifProfile.ToByteArray());
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Assert.Equal(4, clone.HorizontalResolution);
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Assert.Equal(2, clone.VerticalResolution);
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Assert.Equal(imageProperty, clone.Properties[0]);
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}
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[Fact]
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public void CloneIsDeep()
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{
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var metaData = new ImageMetadata();
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var exifProfile = new ExifProfile();
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var imageProperty = new ImageProperty("name", "value");
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metaData.ExifProfile = exifProfile;
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metaData.HorizontalResolution = 4;
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metaData.VerticalResolution = 2;
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metaData.Properties.Add(imageProperty);
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ImageMetadata clone = metaData.DeepClone();
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clone.HorizontalResolution = 2;
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clone.VerticalResolution = 4;
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Assert.False(metaData.ExifProfile.Equals(clone.ExifProfile));
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Assert.False(metaData.HorizontalResolution.Equals(clone.HorizontalResolution));
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Assert.False(metaData.VerticalResolution.Equals(clone.VerticalResolution));
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Assert.False(metaData.Properties.Equals(clone.Properties));
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Assert.False(metaData.GetFormatMetadata(GifFormat.Instance).Equals(clone.GetFormatMetadata(GifFormat.Instance)));
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}
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[Fact]
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public void HorizontalResolution()
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{
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var metaData = new ImageMetadata();
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Assert.Equal(96, metaData.HorizontalResolution);
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metaData.HorizontalResolution = 0;
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Assert.Equal(96, metaData.HorizontalResolution);
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metaData.HorizontalResolution = -1;
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Assert.Equal(96, metaData.HorizontalResolution);
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metaData.HorizontalResolution = 1;
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Assert.Equal(1, metaData.HorizontalResolution);
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}
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[Fact]
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public void VerticalResolution()
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{
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var metaData = new ImageMetadata();
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Assert.Equal(96, metaData.VerticalResolution);
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metaData.VerticalResolution = 0;
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Assert.Equal(96, metaData.VerticalResolution);
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metaData.VerticalResolution = -1;
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Assert.Equal(96, metaData.VerticalResolution);
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metaData.VerticalResolution = 1;
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Assert.Equal(1, metaData.VerticalResolution);
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}
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[Fact]
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public void SyncProfiles()
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{
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var exifProfile = new ExifProfile();
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exifProfile.SetValue(ExifTag.XResolution, new Rational(200));
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exifProfile.SetValue(ExifTag.YResolution, new Rational(300));
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var image = new Image<Rgba32>(1, 1);
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image.Metadata.ExifProfile = exifProfile;
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image.Metadata.HorizontalResolution = 400;
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image.Metadata.VerticalResolution = 500;
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image.Metadata.SyncProfiles();
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Assert.Equal(400, ((Rational)image.Metadata.ExifProfile.GetValue(ExifTag.XResolution).Value).ToDouble());
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Assert.Equal(500, ((Rational)image.Metadata.ExifProfile.GetValue(ExifTag.YResolution).Value).ToDouble());
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}
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}
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}
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