OSOE-591: Test doesn't fail if the visual verification baseline image is not found but the test is retried

Lombiq.Tests.UI/Exceptions/VisualVerificationBaselineImageNotFoundException.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Globalization;
 
 namespace Lombiq.Tests.UI.Exceptions;
 
@@ -7,14 +8,22 @@ namespace Lombiq.Tests.UI.Exceptions;
 public class VisualVerificationBaselineImageNotFoundException : Exception
 #pragma warning restore CA1032 // Implement standard exception constructors
 {
-    public VisualVerificationBaselineImageNotFoundException(string path, Exception innerException = null)
-        : base(
-            $"Baseline image file not found, thus it was created automatically under the path {path}."
+    public VisualVerificationBaselineImageNotFoundException(
+        string path,
+        int maxRetryCount,
+        Exception innerException = null)
+        : base(GetExceptionMessage(path, maxRetryCount), innerException)
+    {
+    }
+
+    private static string GetExceptionMessage(string path, int maxRetryCount) =>
+        maxRetryCount == 0 ? $"Baseline image file not found, thus it was created automatically under the path {path}."
             + " Please set its \"Build action\" to \"Embedded resource\" if you want to deploy a self-contained"
             + " (like a NuGet package) UI testing assembly. If you run the test again, this newly created verification"
             + " file will be asserted against and the assertion will pass (unless the display of the app changed in the"
-            + " meantime).",
-            innerException)
-    {
-    }
+            + " meantime)."
+        : string.Create(
+            CultureInfo.InvariantCulture,
+            $"Baseline image file was not found under the path {path} and MaxRetryCount is set to {maxRetryCount}, "
+            + $"so it won't be generated.");
 }

Lombiq.Tests.UI/Extensions/VisualVerificationUITestContextExtensions.cs

@@ -389,8 +389,18 @@ private static void AssertVisualVerificationApproved(
 
             if (!File.Exists(approvedContext.BaselineImagePath))
             {
-                context.SaveSuggestedImage(element, approvedContext.BaselineImagePath, approvedContext.BaselineImageFileName);
-                throw new VisualVerificationBaselineImageNotFoundException(approvedContext.BaselineImagePath);
+                if (context.Configuration.MaxRetryCount == 0)
+                {
+                    context.SaveSuggestedImage(
+                        element,
+                        approvedContext.BaselineImagePath,
+                        approvedContext.BaselineImageFileName);
+                    throw new VisualVerificationBaselineImageNotFoundException(
+                        approvedContext.BaselineImagePath, context.Configuration.MaxRetryCount);
+                }
+
+                throw new VisualVerificationBaselineImageNotFoundException(
+                    approvedContext.BaselineImagePath, context.Configuration.MaxRetryCount);
             }
 
             baselineImage = Image.Load(approvedContext.BaselineImagePath);