Fix #51171: Eager validation of named options

src/libraries/Microsoft.Extensions.Hosting/src/OptionsBuilderExtensions.cs

@@ -34,7 +34,7 @@ public static class OptionsBuilderExtensions
                 {
                     // This adds an action that resolves the options value to force evaluation
                     // We don't care about the result as duplicates are not important
-                    vo.Validators[typeof(TOptions)] = () => options.Get(optionsBuilder.Name);
+                    vo.Validators[(typeof(TOptions), optionsBuilder.Name)] = () => options.Get(optionsBuilder.Name);
                 });
 
             return optionsBuilder;

src/libraries/Microsoft.Extensions.Hosting/src/ValidationHostedService.cs

@@ -13,7 +13,7 @@ namespace Microsoft.Extensions.DependencyInjection
 {
     internal sealed class ValidationHostedService : IHostedService
     {
-        private readonly IDictionary<Type, Action> _validators;
+        private readonly IDictionary<(Type, string), Action> _validators;
 
         public ValidationHostedService(IOptions<ValidatorOptions> validatorOptions)
         {

src/libraries/Microsoft.Extensions.Hosting/src/ValidatorOptions.cs

@@ -8,7 +8,7 @@ namespace Microsoft.Extensions.DependencyInjection
 {
     internal sealed class ValidatorOptions
     {
-        // Maps each options type to a method that forces its evaluation, e.g. IOptionsMonitor<TOptions>.Get(name)
-        public IDictionary<Type, Action> Validators { get; } = new Dictionary<Type, Action>();
+        // Maps each pair of a) options type and b) options name to a method that forces its evaluation, e.g. IOptionsMonitor<TOptions>.Get(name)
+        public IDictionary<(Type optionsType, string optionsName), Action> Validators { get; } = new Dictionary<(Type, string), Action>();
     }
 }

src/libraries/Microsoft.Extensions.Hosting/tests/UnitTests/OptionsBuilderExtensionsTests.cs

@@ -135,14 +135,14 @@ public async Task ValidateOnStart_NamedOptions_ValidatesFailureOnStart()
         [Fact]
         [ActiveIssue("https://github.com/dotnet/runtime/issues/34582", TestPlatforms.Windows, TargetFrameworkMonikers.Netcoreapp, TestRuntimes.Mono)]
         [ActiveIssue("https://github.com/dotnet/runtime/issues/52114", TestPlatforms.iOS | TestPlatforms.tvOS | TestPlatforms.MacCatalyst)]
-        private async Task ValidateOnStart_AddOptionsMultipleTimesForSameType_LastOneGetsTriggered()
+        private async Task ValidateOnStart_AddNamedOptionsMultipleTimesForSameType_BothGetTriggered()
         {
             bool firstOptionsBuilderTriggered = false;
             bool secondOptionsBuilderTriggered = false;
             var hostBuilder = CreateHostBuilder(services =>
             {
                 services.AddOptions<ComplexOptions>("bad_configuration1")
-                    .Configure(o => o.Boolean = false)
+                    .Configure(o => o.Boolean = true)
                     .Validate(o =>
                     {
                         firstOptionsBuilderTriggered = true;
@@ -175,7 +175,7 @@ private async Task ValidateOnStart_AddOptionsMultipleTimesForSameType_LastOneGet
                 ValidateFailure<ComplexOptions>(error, 2, "Boolean", "Integer");
             }
 
-            Assert.False(firstOptionsBuilderTriggered);
+            Assert.True(firstOptionsBuilderTriggered);
             Assert.True(secondOptionsBuilderTriggered);
         }