From 454c5a1b48cbb0cf112578eb20ff882a90f4c48a Mon Sep 17 00:00:00 2001
From: Anton Firszov <antonfir@gmail.com>
Date: Sun, 1 Apr 2018 02:03:02 +0200
Subject: [PATCH] trying to fine-tune tolerance values

---
 .../Processing/Processors/Filters/FilterTest.cs              | 2 +-
 .../Processing/Transforms/AffineTransformTests.cs            | 2 +-
 .../TestUtilities/ImageComparison/ImageComparer.cs           | 5 +++--
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/tests/ImageSharp.Tests/Processing/Processors/Filters/FilterTest.cs b/tests/ImageSharp.Tests/Processing/Processors/Filters/FilterTest.cs
index 5c90b1334c..8a24046569 100644
--- a/tests/ImageSharp.Tests/Processing/Processors/Filters/FilterTest.cs
+++ b/tests/ImageSharp.Tests/Processing/Processors/Filters/FilterTest.cs
@@ -16,7 +16,7 @@ namespace SixLabors.ImageSharp.Tests.Processing.Processors.Filters
     [GroupOutput("Filters")]
     public class FilterTest
     {
-        private static readonly ImageComparer ValidatorComparer = ImageComparer.TolerantPercentage(0.02f);
+        private static readonly ImageComparer ValidatorComparer = ImageComparer.TolerantPercentage(0.005f, 3);
 
         // Testing the generic FilterProcessor with more than one pixel type intentionally.
         // There is no need to do this with the specialized ones.
diff --git a/tests/ImageSharp.Tests/Processing/Transforms/AffineTransformTests.cs b/tests/ImageSharp.Tests/Processing/Transforms/AffineTransformTests.cs
index 27e7efcc99..c4a8c9b2da 100644
--- a/tests/ImageSharp.Tests/Processing/Transforms/AffineTransformTests.cs
+++ b/tests/ImageSharp.Tests/Processing/Transforms/AffineTransformTests.cs
@@ -18,7 +18,7 @@ namespace SixLabors.ImageSharp.Tests.Processing.Transforms
     {
         private readonly ITestOutputHelper Output;
 
-        private static readonly ImageComparer ValidatorComparer = ImageComparer.TolerantPercentage(0.005f);
+        private static readonly ImageComparer ValidatorComparer = ImageComparer.TolerantPercentage(0.005f, 3);
 
         /// <summary>
         /// angleDeg, sx, sy, tx, ty
diff --git a/tests/ImageSharp.Tests/TestUtilities/ImageComparison/ImageComparer.cs b/tests/ImageSharp.Tests/TestUtilities/ImageComparison/ImageComparer.cs
index 7dbbe63112..b708673c70 100644
--- a/tests/ImageSharp.Tests/TestUtilities/ImageComparison/ImageComparer.cs
+++ b/tests/ImageSharp.Tests/TestUtilities/ImageComparison/ImageComparer.cs
@@ -28,8 +28,9 @@ namespace SixLabors.ImageSharp.Tests.TestUtilities.ImageComparison
         /// <summary>
         /// Returns Tolerant(imageThresholdInPercents/100)
         /// </summary>
-        public static ImageComparer TolerantPercentage(float imageThresholdInPercents) =>
-            Tolerant(imageThresholdInPercents / 100f);
+        public static ImageComparer TolerantPercentage(float imageThresholdInPercents,
+                                                       int perPixelManhattanThreshold = 0) =>
+            Tolerant(imageThresholdInPercents / 100f, perPixelManhattanThreshold);
 
         public abstract ImageSimilarityReport<TPixelA, TPixelB> CompareImagesOrFrames<TPixelA, TPixelB>(
             ImageFrame<TPixelA> expected,