Turn scope by default for testing purposes

Author: javiercn

src/Middleware/Diagnostics/src/ExceptionHandler/ExceptionHandlerOptions.cs

@@ -22,7 +22,7 @@ public class ExceptionHandlerOptions
     /// replace it on <see cref="HttpContext.RequestServices"/> when re-executing the request to handle an error.
     /// </summary>
     /// <remarks>The default value is <see langword="false"/>.</remarks>
-    public bool CreateScopeForErrors { get; set; }
+    public bool CreateScopeForErrors { get; set; } = true;
 
     /// <summary>
     /// The <see cref="RequestDelegate" /> that will handle the exception. If this is not

src/Middleware/Diagnostics/test/UnitTests/ExceptionHandlerMiddlewareTest.cs

@@ -396,7 +396,29 @@ private class TestServiceProvider : IServiceProvider
     {
         public object GetService(Type serviceType)
         {
+            if (serviceType == typeof(IServiceScopeFactory))
+            {
+                return new TestServiceScopeFactory();
+            }
+
             throw new NotImplementedException();
         }
     }
+
+    private class TestServiceScopeFactory : IServiceScopeFactory
+    {
+        public IServiceScope CreateScope()
+        {
+            return new TestServiceScope();
+        }
+    }
+
+    private class TestServiceScope : IServiceScope
+    {
+        public IServiceProvider ServiceProvider => new TestServiceProvider();
+
+        public void Dispose()
+        {
+        }
+    }
 }