diff --git a/tests/ImageSharp.Tests/Quantization/PixelSamplingStrategyTests.cs b/tests/ImageSharp.Tests/Quantization/PixelSamplingStrategyTests.cs index 17c60d4d70..20eb91aa40 100644 --- a/tests/ImageSharp.Tests/Quantization/PixelSamplingStrategyTests.cs +++ b/tests/ImageSharp.Tests/Quantization/PixelSamplingStrategyTests.cs @@ -36,7 +36,7 @@ public class PixelSamplingStrategyTests }; [Fact] - public void ExtensivePixelSamplingStrategy_EnumeratesAll() + public void ExtensivePixelSamplingStrategy_EnumeratesAll_MultiFrame() { using Image image = CreateTestImage(100, 100, 100); ExtensivePixelSamplingStrategy strategy = new(); @@ -51,6 +51,25 @@ public class PixelSamplingStrategyTests ImageComparer.Exact.VerifySimilarity(expected, image); } + [Fact] + public void ExtensivePixelSamplingStrategy_EnumeratesAll() + { + using Image image = CreateTestImage(100, 100, 100); + ExtensivePixelSamplingStrategy strategy = new(); + + foreach (ImageFrame frame in image.Frames) + { + foreach (Buffer2DRegion region in strategy.EnumeratePixelRegions(frame)) + { + PaintWhite(region); + } + } + + using Image expected = CreateTestImage(100, 100, 100, true); + + ImageComparer.Exact.VerifySimilarity(expected, image); + } + [Theory] [WithBlankImages(nameof(DefaultPixelSamplingStrategy_MultiFrame_Data), 1, 1, PixelTypes.L8)] public void DefaultPixelSamplingStrategy_IsFair_MultiFrame(TestImageProvider dummyProvider, int width, int height, int noOfFrames, int maximumNumberOfPixels) @@ -88,10 +107,13 @@ public class PixelSamplingStrategyTests DefaultPixelSamplingStrategy strategy = new(maximumNumberOfPixels, 0.1); long visitedPixels = 0; - foreach (Buffer2DRegion region in strategy.EnumeratePixelRegions(image)) + foreach (ImageFrame frame in image.Frames) { - PaintWhite(region); - visitedPixels += region.Width * region.Height; + foreach (Buffer2DRegion region in strategy.EnumeratePixelRegions(frame)) + { + PaintWhite(region); + visitedPixels += region.Width * region.Height; + } } image.DebugSave(