Change the test setup instead changing the NavigationManager.

Author: ilonatommy

src/Components/Components/src/NavigationManager.cs

@@ -62,15 +62,6 @@ public event EventHandler<EventArgs> NotFoundEvent
     private string? _uri;
     private bool _isInitialized;
 
-    /// <summary>
-    /// Gets a value indicating whether the <see cref="NavigationManager"/> has been initialized.
-    /// </summary>
-    /// <remarks>
-    /// The <see cref="NavigationManager"/> must be initialized before it can be used to navigate or handle navigation events.
-    /// Initialization typically involves setting the base URI and the current URI.
-    /// </remarks>
-    public bool IsInitialized => _isInitialized;
-
     /// <summary>
     /// Gets or sets the current base URI. The <see cref="BaseUri" /> is always represented as an absolute URI in string form with trailing slash.
     /// Typically this corresponds to the 'href' attribute on the document's &lt;base&gt; element.

src/Components/Components/src/PublicAPI.Unshipped.txt

@@ -1,7 +1,6 @@
 #nullable enable
 Microsoft.AspNetCore.Components.NavigationManager.NotFoundEvent -> System.EventHandler<System.EventArgs!>!
 virtual Microsoft.AspNetCore.Components.NavigationManager.NotFound() -> void
-Microsoft.AspNetCore.Components.NavigationManager.IsInitialized.get -> bool
 Microsoft.AspNetCore.Components.Infrastructure.ComponentStatePersistenceManager.ComponentStatePersistenceManager(Microsoft.Extensions.Logging.ILogger<Microsoft.AspNetCore.Components.Infrastructure.ComponentStatePersistenceManager!>! logger, System.IServiceProvider! serviceProvider) -> void
 Microsoft.AspNetCore.Components.Infrastructure.ComponentStatePersistenceManager.SetPlatformRenderMode(Microsoft.AspNetCore.Components.IComponentRenderMode! renderMode) -> void
 Microsoft.AspNetCore.Components.Infrastructure.RegisterPersistentComponentStateServiceCollectionExtensions

src/Components/Endpoints/src/Rendering/EndpointHtmlRenderer.cs

@@ -81,7 +81,7 @@ internal async Task InitializeStandardComponentServicesAsync(
         var navigationManager = httpContext.RequestServices.GetRequiredService<NavigationManager>();
         ((IHostEnvironmentNavigationManager)navigationManager)?.Initialize(GetContextBaseUri(httpContext.Request), GetFullUri(httpContext.Request));
 
-        if (navigationManager != null && navigationManager.IsInitialized)
+        if (navigationManager != null)
         {
             navigationManager.NotFoundEvent += SetNotFoundResponse;
         }

src/Mvc/Mvc.TagHelpers/test/ComponentTagHelperTest.cs

@@ -77,9 +77,6 @@ private static TagHelperOutput GetTagHelperOutput()
 
     private ViewContext GetViewContext()
     {
-        var navManager = new Mock<NavigationManager>();
-        navManager.As<IHostEnvironmentNavigationManager>();
-
         var httpContext = new DefaultHttpContext
         {
             RequestServices = new ServiceCollection()
@@ -89,7 +86,7 @@ private ViewContext GetViewContext()
                     x => x.CreateProtector(It.IsAny<string>()) == Mock.Of<IDataProtector>()))
                 .AddLogging()
                 .AddScoped<ComponentStatePersistenceManager>()
-                .AddScoped(_ => navManager.Object)
+                .AddScoped<NavigationManager, MockNavigationManager>()
                 .AddScoped<HttpContextFormDataProvider>()
                 .BuildServiceProvider(),
         };
@@ -104,4 +101,16 @@ protected override void BuildRenderTree(RenderTreeBuilder builder)
             builder.AddContent(0, "Hello from the component");
         }
     }
+
+    class MockNavigationManager : NavigationManager, IHostEnvironmentNavigationManager
+    {
+        public MockNavigationManager()
+        {
+           Initialize("https://localhost:85/subdir/", "https://localhost:85/subdir/path?query=value#hash");
+        }
+
+        void IHostEnvironmentNavigationManager.Initialize(string baseUri, string uri)
+        {
+        }
+    }
 }