Fix comparer attempting to handle non images (#745)

Author: SimonCropp

src/Directory.Build.props

@@ -2,7 +2,7 @@
 <Project>
   <PropertyGroup>
     <NoWarn>CS1591;CS0649;NU1608;NU1109</NoWarn>
-    <Version>3.7.4</Version>
+    <Version>3.7.5</Version>
     <AssemblyVersion>1.0.0</AssemblyVersion>
     <ImplicitUsings>enable</ImplicitUsings>
     <LangVersion>preview</LangVersion>

src/Directory.Packages.props

@@ -11,9 +11,9 @@
     <PackageVersion Include="NUnit3TestAdapter" Version="5.1.0" />
     <PackageVersion Include="Polyfill" Version="8.9.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.161" />
-    <PackageVersion Include="Verify" Version="30.18.0" />
+    <PackageVersion Include="Verify" Version="30.19.0" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
-    <PackageVersion Include="Verify.Nunit" Version="30.18.0" />
+    <PackageVersion Include="Verify.Nunit" Version="30.19.0" />
     <PackageVersion Include="Microsoft.Sbom.Targets" Version="4.1.2" />
   </ItemGroup>
 </Project>

src/Verify.ImageMagick/VerifyImageMagick.cs

@@ -96,15 +96,18 @@ internal static Task<CompareResult> Compare(double threshold, ErrorMetric metric
     /// </summary>
     public static void ImageMagickComparer(this VerifySettings settings, double threshold = .005, ErrorMetric metric = ErrorMetric.Fuzz) =>
         settings.UseStreamComparer(
-            (received, verified, _) => Compare(threshold, metric, received, verified));
+            (received, verified, _) => Compare(threshold, metric, received, verified),
+            extensions: ["png", "jpg", "bmp", "tiff"]);
 
     /// <summary>
     /// Helper method that calls <see cref="RegisterPdfToPngConverter"/> and
     /// <see cref="RegisterComparers"/>(threshold = .005, metric = ErrorMetric.Fuzz)
     /// </summary>
-    public static SettingsTask ImageMagickComparer(this SettingsTask settings, double threshold = .005, ErrorMetric metric = ErrorMetric.Fuzz) =>
-        settings.UseStreamComparer(
-            (received, verified, _) => Compare(threshold, metric, received, verified));
+    public static SettingsTask ImageMagickComparer(this SettingsTask settings, double threshold = .005, ErrorMetric metric = ErrorMetric.Fuzz)
+    {
+        settings.CurrentSettings.ImageMagickComparer(threshold, metric);
+        return settings;
+    }
 
     public static void RegisterComparer(double threshold, ErrorMetric metric, string extension) =>
         VerifierSettings.RegisterStreamComparer(
@@ -133,7 +136,6 @@ static Task<CompareResult> Compare(double threshold, ErrorMetric metric, IMagick
                  """));
     }
 
-
     //
     // static ImageInfo BuildInfo(MagickImage image) =>
     //     new()
@@ -165,4 +167,4 @@ static Task<CompareResult> Compare(double threshold, ErrorMetric metric, IMagick
     //         BlackPointCompensation = image.BlackPointCompensation,
     //         AnimationTicksPerSecond = image.AnimationTicksPerSecond
     //     };
-}
+}