No longer throw an argument exception for a negative bias value in AdaptiveThreshold (#1717)

Author: dlemstra

src/Magick.NET/MagickImage.cs

@@ -1030,11 +1030,7 @@ public void AdaptiveThreshold(uint width, uint height, double bias)
     /// <param name="channels">The channel(s) that should be thresholded.</param>
     /// <exception cref="MagickException">Thrown when an error is raised by ImageMagick.</exception>
     public void AdaptiveThreshold(uint width, uint height, double bias, Channels channels)
-    {
-        Throw.IfNegative(nameof(bias), bias);
-
-        _nativeInstance.AdaptiveThreshold(width, height, bias, channels);
-    }
+        => _nativeInstance.AdaptiveThreshold(width, height, bias, channels);
 
     /// <summary>
     /// Local adaptive threshold image.

tests/Magick.NET.Tests/MagickImageTests/TheAdaptiveThresholdMethod.cs

@@ -11,22 +11,29 @@ public partial class MagickImageTests
 {
     public class TheAdaptiveThresholdMethod
     {
+#if !Q16HDRI
         [Fact]
-        public void ShouldThrowExceptionWhenBiasIsNegative()
+        public void ShouldThrowExceptionWhenBiasPercentagetIsNegative()
         {
             using var image = new MagickImage(Files.MagickNETIconPNG);
-            Assert.Throws<ArgumentException>("bias", () => image.AdaptiveThreshold(10, 10, -1, Channels.Red));
+            Assert.Throws<ArgumentException>("biasPercentage", () => image.AdaptiveThreshold(10, 10, new Percentage(-1), Channels.Red));
         }
-
-#if !Q16HDRI
+#else
         [Fact]
-        public void ShouldThrowExceptionWhenBiasPercentagetIsNegative()
+        public void ShouldNotThrowExceptionWhenBiasPercentagetIsNegative()
         {
             using var image = new MagickImage(Files.MagickNETIconPNG);
-            Assert.Throws<ArgumentException>("biasPercentage", () => image.AdaptiveThreshold(10, 10, new Percentage(-1), Channels.Red));
+            image.AdaptiveThreshold(10, 10, new Percentage(-1), Channels.Red);
         }
 #endif
 
+        [Fact]
+        public void ShouldAllowNegativeBiasValue()
+        {
+            using var image = new MagickImage(Files.MagickNETIconPNG);
+            image.AdaptiveThreshold(10, 10, -1, Channels.Red);
+        }
+
         [Fact]
         public void ShouldThresholdTheImage()
         {