AddControllersWithViewsCore should add CacheTagHelper services (#9580)

src/Mvc/Mvc/src/MvcServiceCollectionExtensions.cs

@@ -227,7 +227,10 @@ namespace Microsoft.Extensions.DependencyInjection
 
         private static IMvcCoreBuilder AddControllersWithViewsCore(IServiceCollection services)
         {
-            var builder = AddControllersCore(services).AddViews().AddRazorViewEngine();
+            var builder = AddControllersCore(services)
+                .AddViews()
+                .AddRazorViewEngine()
+                .AddCacheTagHelper();
 
             AddTagHelpersFrameworkParts(builder.PartManager);
 

src/Mvc/Mvc/test/MvcServiceCollectionExtensionsTest.cs

@@ -15,12 +15,15 @@ using Microsoft.AspNetCore.Mvc.ApplicationParts;
 using Microsoft.AspNetCore.Mvc.Controllers;
 using Microsoft.AspNetCore.Mvc.Cors;
 using Microsoft.AspNetCore.Mvc.Filters;
+using Microsoft.AspNetCore.Mvc.Formatters;
 using Microsoft.AspNetCore.Mvc.Infrastructure;
 using Microsoft.AspNetCore.Mvc.Razor;
 using Microsoft.AspNetCore.Mvc.Razor.TagHelpers;
 using Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure;
+using Microsoft.AspNetCore.Mvc.Rendering;
 using Microsoft.AspNetCore.Mvc.TagHelpers;
 using Microsoft.AspNetCore.Mvc.ViewComponents;
+using Microsoft.AspNetCore.Mvc.ViewEngines;
 using Microsoft.AspNetCore.Mvc.ViewFeatures;
 using Microsoft.AspNetCore.Mvc.ViewFeatures.Filters;
 using Microsoft.AspNetCore.Routing;
@@ -219,6 +222,35 @@ namespace Microsoft.AspNetCore.Mvc
             VerifyAllServices(services);
         }
 
+        [Fact]
+        public void AddControllersWithViews_AddsDocumentedServices()
+        {
+            // Arrange
+            var services = new ServiceCollection();
+            services.AddControllersWithViews();
+
+            // Assert
+            // Adds controllers
+            Assert.Contains(services, s => s.ServiceType == typeof(IActionInvokerProvider) && s.ImplementationType == typeof(ControllerActionInvokerProvider));
+            // Adds ApiExplorer
+            Assert.Contains(services, s => s.ServiceType == typeof(IApiDescriptionGroupCollectionProvider));
+            // Adds CORS
+            Assert.Contains(services, s => s.ServiceType == typeof(CorsAuthorizationFilter));
+            // Adds DataAnnotations
+            Assert.Contains(services, s => s.ServiceType == typeof(IConfigureOptions<MvcOptions>) && s.ImplementationType == typeof(MvcDataAnnotationsMvcOptionsSetup));
+            // Adds FormatterMappings
+            Assert.Contains(services, s => s.ServiceType == typeof(FormatFilter));
+            // Adds Views
+            Assert.Contains(services, s => s.ServiceType == typeof(IHtmlHelper));
+            // Adds Razor
+            Assert.Contains(services, s => s.ServiceType == typeof(IRazorViewEngine));
+            // Adds CacheTagHelper
+            Assert.Contains(services, s => s.ServiceType == typeof(CacheTagHelperMemoryCacheFactory));
+
+            // No Razor Pages
+            Assert.Empty(services.Where(s => s.ServiceType == typeof(IActionInvokerProvider) && s.ImplementationType == typeof(PageActionInvokerProvider)));
+        }
+
         private void VerifyAllServices(IServiceCollection services)
         {
             var singleRegistrationServiceTypes = SingleRegistrationServiceTypes;