Address PR feedback: remove test, fix nullability, add comments

Co-authored-by: ilonatommy <[email protected]>

Author: Copilot

src/Middleware/Diagnostics/src/PublicAPI.Shipped.txt

@@ -89,7 +89,7 @@ static Microsoft.AspNetCore.Builder.StatusCodePagesExtensions.UseStatusCodePages
 static Microsoft.AspNetCore.Builder.StatusCodePagesExtensions.UseStatusCodePages(this Microsoft.AspNetCore.Builder.IApplicationBuilder! app, System.Action<Microsoft.AspNetCore.Builder.IApplicationBuilder!>! configuration) -> Microsoft.AspNetCore.Builder.IApplicationBuilder!
 static Microsoft.AspNetCore.Builder.StatusCodePagesExtensions.UseStatusCodePages(this Microsoft.AspNetCore.Builder.IApplicationBuilder! app, System.Func<Microsoft.AspNetCore.Diagnostics.StatusCodeContext!, System.Threading.Tasks.Task!>! handler) -> Microsoft.AspNetCore.Builder.IApplicationBuilder!
 static Microsoft.AspNetCore.Builder.StatusCodePagesExtensions.UseStatusCodePagesWithRedirects(this Microsoft.AspNetCore.Builder.IApplicationBuilder! app, string! locationFormat) -> Microsoft.AspNetCore.Builder.IApplicationBuilder!
-static Microsoft.AspNetCore.Builder.StatusCodePagesExtensions.UseStatusCodePagesWithReExecute(this Microsoft.AspNetCore.Builder.IApplicationBuilder! app, string! pathFormat, string? queryFormat) -> Microsoft.AspNetCore.Builder.IApplicationBuilder!
+static Microsoft.AspNetCore.Builder.StatusCodePagesExtensions.UseStatusCodePagesWithReExecute(this Microsoft.AspNetCore.Builder.IApplicationBuilder! app, string! pathFormat, string! queryFormat) -> Microsoft.AspNetCore.Builder.IApplicationBuilder!
 static Microsoft.AspNetCore.Builder.WelcomePageExtensions.UseWelcomePage(this Microsoft.AspNetCore.Builder.IApplicationBuilder! app) -> Microsoft.AspNetCore.Builder.IApplicationBuilder!
 static Microsoft.AspNetCore.Builder.WelcomePageExtensions.UseWelcomePage(this Microsoft.AspNetCore.Builder.IApplicationBuilder! app, Microsoft.AspNetCore.Builder.WelcomePageOptions! options) -> Microsoft.AspNetCore.Builder.IApplicationBuilder!
 static Microsoft.AspNetCore.Builder.WelcomePageExtensions.UseWelcomePage(this Microsoft.AspNetCore.Builder.IApplicationBuilder! app, Microsoft.AspNetCore.Http.PathString path) -> Microsoft.AspNetCore.Builder.IApplicationBuilder!

src/Middleware/Diagnostics/src/StatusCodePage/StatusCodePagesExtensions.cs

@@ -133,6 +133,7 @@ public static IApplicationBuilder UseStatusCodePages(this IApplicationBuilder ap
         return app.UseStatusCodePages(context => tangent(context.HttpContext));
     }
 
+    // 1.0 BACKCOMPAT OVERLOAD -- DO NOT TOUCH
     /// <summary>
     /// Adds a StatusCodePages middleware to the pipeline. Specifies that the response body should be generated by
     /// re-executing the request pipeline using an alternate path. This path may contain a '{0}' placeholder of the status code.
@@ -144,7 +145,7 @@ public static IApplicationBuilder UseStatusCodePages(this IApplicationBuilder ap
     public static IApplicationBuilder UseStatusCodePagesWithReExecute(
         this IApplicationBuilder app,
         string pathFormat,
-        string? queryFormat)
+        string queryFormat)
     {
         ArgumentNullException.ThrowIfNull(app);
 
@@ -169,7 +170,7 @@ public static IApplicationBuilder UseStatusCodePagesWithReExecute(
     /// <param name="app"></param>
     /// <param name="pathFormat"></param>
     /// <param name="queryFormat"></param>
-    /// <param name="createScopeForStatusCodePages"></param>
+    /// <param name="createScopeForStatusCodePages">Whether or not to create a new <see cref="IServiceProvider"/> scope.</param>
     /// <returns></returns>
     [SuppressMessage("ApiDesign", "RS0026:Do not add multiple overloads with optional parameters", Justification = "Required to maintain compatibility")]
     public static IApplicationBuilder UseStatusCodePagesWithReExecute(

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

@@ -390,68 +390,6 @@ public async Task SkipStatusCodePages_WorksIfUsedBeforeRouting()
         Assert.Equal("Status: 400", content);
     }
 
-    [Fact]
-    public async Task CreateScopeForStatusCodePages_ConfiguresOptionCorrectly()
-    {
-        var expectedStatusCode = 432;
-        var destination = "/location";
-        StatusCodePagesOptions capturedOptions = null;
-        
-        using var host = new HostBuilder()
-            .ConfigureWebHost(webHostBuilder =>
-            {
-                webHostBuilder
-                .UseTestServer()
-                .Configure(app =>
-                {
-                    // Use the new overload
-                    app.UseStatusCodePagesWithReExecute(pathFormat: "/errorPage", queryFormat: null, createScopeForStatusCodePages: true);
-
-                    app.Map(destination, (innerAppBuilder) =>
-                    {
-                        innerAppBuilder.Run((httpContext) =>
-                        {
-                            httpContext.Response.StatusCode = expectedStatusCode;
-                            return Task.FromResult(1);
-                        });
-                    });
-
-                    app.Map("/errorPage", (innerAppBuilder) =>
-                    {
-                        innerAppBuilder.Run((httpContext) =>
-                        {
-                            // Capture the options to verify they were set correctly
-                            var statusCodePagesFeature = httpContext.Features.Get<IStatusCodePagesFeature>();
-                            if (statusCodePagesFeature != null)
-                            {
-                                // Access the middleware context to get options if possible
-                                var statusCodeContext = new StatusCodeContext(httpContext, new StatusCodePagesOptions(), _ => Task.CompletedTask);
-                                var field = typeof(StatusCodeContext).GetProperty("Options");
-                                capturedOptions = field?.GetValue(statusCodeContext) as StatusCodePagesOptions;
-                            }
-                            return httpContext.Response.WriteAsync("Error page");
-                        });
-                    });
-
-                    app.Run((context) =>
-                    {
-                        throw new InvalidOperationException("Invalid input provided.");
-                    });
-                });
-            }).Build();
-
-        await host.StartAsync();
-
-        using var server = host.GetTestServer();
-        var client = server.CreateClient();
-        var response = await client.GetAsync(destination);
-        var content = await response.Content.ReadAsStringAsync();
-        
-        Assert.Equal("Error page", content);
-        // Just verify that the API accepts the parameter, since it's hard to test the internal behavior
-        Assert.True(true); // Test passes if we get here without exceptions
-    }
-
     [Fact]
     public async Task CreateScopeForStatusCodePages_DefaultParameterWorks()
     {