From 08771fe8abb5085ffbfddbd2ec1b4df3ca11f37e Mon Sep 17 00:00:00 2001
From: Dirk Lemstra <dirk@lemstra.org>
Date: Wed, 14 Oct 2020 13:53:32 +0000
Subject: [PATCH] Update
 tests/ImageSharp.Tests/TestUtilities/ReferenceCodecs/MagickReferenceDecoder.cs

Co-authored-by: James Jackson-South <james_south@hotmail.com>
---
 .../TestUtilities/ReferenceCodecs/MagickReferenceDecoder.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tests/ImageSharp.Tests/TestUtilities/ReferenceCodecs/MagickReferenceDecoder.cs b/tests/ImageSharp.Tests/TestUtilities/ReferenceCodecs/MagickReferenceDecoder.cs
index d4c35a1ad..dda5f751c 100644
--- a/tests/ImageSharp.Tests/TestUtilities/ReferenceCodecs/MagickReferenceDecoder.cs
+++ b/tests/ImageSharp.Tests/TestUtilities/ReferenceCodecs/MagickReferenceDecoder.cs
@@ -56,6 +56,12 @@ namespace SixLabors.ImageSharp.Tests.TestUtilities.ReferenceCodecs
             where TPixel : unmanaged, ImageSharp.PixelFormats.IPixel<TPixel>
         {
             var bmpReadDefines = new BmpReadDefines
+            {
+                // See https://github.com/SixLabors/ImageSharp/issues/1380
+                // Validation fails on Ubuntu despite identical header generation
+                // on all platforms.
+                IgnoreFileSize = !TestEnvironment.IsWindows
+            };
             {
                 IgnoreFileSize = true
             };