Support RootNamespaceAttribute

My.Extensions.Localization.Json.sln

@@ -27,48 +27,152 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "LocalizationSample.Blazor.C
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "My.Extensions.Localization.Json.Benchmarks", "test\My.Extensions.Localization.Json.Benchmarks\My.Extensions.Localization.Json.Benchmarks.csproj", "{37DA3363-09EC-4686-89A9-2D12B2472C52}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ResourcesClassLibraryNoAttribute", "test\ResourcesClassLibraryNoAttribute\ResourcesClassLibraryNoAttribute.csproj", "{4E150972-E056-4C80-A934-1136B20A3065}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ResourcesClassLibraryWithAttribute", "test\ResourcesClassLibraryWithAttribute\ResourcesClassLibraryWithAttribute.csproj", "{AB0714F5-7BBC-4DAC-B622-2F5745A8C91C}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
 		Release|Any CPU = Release|Any CPU
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{15E86906-2A6F-4F35-8D06-404CD33C82D5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{15E86906-2A6F-4F35-8D06-404CD33C82D5}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{15E86906-2A6F-4F35-8D06-404CD33C82D5}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{15E86906-2A6F-4F35-8D06-404CD33C82D5}.Debug|x64.Build.0 = Debug|Any CPU
+		{15E86906-2A6F-4F35-8D06-404CD33C82D5}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{15E86906-2A6F-4F35-8D06-404CD33C82D5}.Debug|x86.Build.0 = Debug|Any CPU
 		{15E86906-2A6F-4F35-8D06-404CD33C82D5}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{15E86906-2A6F-4F35-8D06-404CD33C82D5}.Release|Any CPU.Build.0 = Release|Any CPU
+		{15E86906-2A6F-4F35-8D06-404CD33C82D5}.Release|x64.ActiveCfg = Release|Any CPU
+		{15E86906-2A6F-4F35-8D06-404CD33C82D5}.Release|x64.Build.0 = Release|Any CPU
+		{15E86906-2A6F-4F35-8D06-404CD33C82D5}.Release|x86.ActiveCfg = Release|Any CPU
+		{15E86906-2A6F-4F35-8D06-404CD33C82D5}.Release|x86.Build.0 = Release|Any CPU
 		{73B1195D-006C-40EE-A36F-2EDCFB2FFCDE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{73B1195D-006C-40EE-A36F-2EDCFB2FFCDE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{73B1195D-006C-40EE-A36F-2EDCFB2FFCDE}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{73B1195D-006C-40EE-A36F-2EDCFB2FFCDE}.Debug|x64.Build.0 = Debug|Any CPU
+		{73B1195D-006C-40EE-A36F-2EDCFB2FFCDE}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{73B1195D-006C-40EE-A36F-2EDCFB2FFCDE}.Debug|x86.Build.0 = Debug|Any CPU
 		{73B1195D-006C-40EE-A36F-2EDCFB2FFCDE}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{73B1195D-006C-40EE-A36F-2EDCFB2FFCDE}.Release|Any CPU.Build.0 = Release|Any CPU
+		{73B1195D-006C-40EE-A36F-2EDCFB2FFCDE}.Release|x64.ActiveCfg = Release|Any CPU
+		{73B1195D-006C-40EE-A36F-2EDCFB2FFCDE}.Release|x64.Build.0 = Release|Any CPU
+		{73B1195D-006C-40EE-A36F-2EDCFB2FFCDE}.Release|x86.ActiveCfg = Release|Any CPU
+		{73B1195D-006C-40EE-A36F-2EDCFB2FFCDE}.Release|x86.Build.0 = Release|Any CPU
 		{4732D5B3-AEB5-4AF4-8679-7EBB4B2FBF95}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{4732D5B3-AEB5-4AF4-8679-7EBB4B2FBF95}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4732D5B3-AEB5-4AF4-8679-7EBB4B2FBF95}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{4732D5B3-AEB5-4AF4-8679-7EBB4B2FBF95}.Debug|x64.Build.0 = Debug|Any CPU
+		{4732D5B3-AEB5-4AF4-8679-7EBB4B2FBF95}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{4732D5B3-AEB5-4AF4-8679-7EBB4B2FBF95}.Debug|x86.Build.0 = Debug|Any CPU
 		{4732D5B3-AEB5-4AF4-8679-7EBB4B2FBF95}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{4732D5B3-AEB5-4AF4-8679-7EBB4B2FBF95}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4732D5B3-AEB5-4AF4-8679-7EBB4B2FBF95}.Release|x64.ActiveCfg = Release|Any CPU
+		{4732D5B3-AEB5-4AF4-8679-7EBB4B2FBF95}.Release|x64.Build.0 = Release|Any CPU
+		{4732D5B3-AEB5-4AF4-8679-7EBB4B2FBF95}.Release|x86.ActiveCfg = Release|Any CPU
+		{4732D5B3-AEB5-4AF4-8679-7EBB4B2FBF95}.Release|x86.Build.0 = Release|Any CPU
 		{9789DDC4-6CC1-4A77-9883-D745BCAB524F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{9789DDC4-6CC1-4A77-9883-D745BCAB524F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{9789DDC4-6CC1-4A77-9883-D745BCAB524F}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{9789DDC4-6CC1-4A77-9883-D745BCAB524F}.Debug|x64.Build.0 = Debug|Any CPU
+		{9789DDC4-6CC1-4A77-9883-D745BCAB524F}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{9789DDC4-6CC1-4A77-9883-D745BCAB524F}.Debug|x86.Build.0 = Debug|Any CPU
 		{9789DDC4-6CC1-4A77-9883-D745BCAB524F}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{9789DDC4-6CC1-4A77-9883-D745BCAB524F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{9789DDC4-6CC1-4A77-9883-D745BCAB524F}.Release|x64.ActiveCfg = Release|Any CPU
+		{9789DDC4-6CC1-4A77-9883-D745BCAB524F}.Release|x64.Build.0 = Release|Any CPU
+		{9789DDC4-6CC1-4A77-9883-D745BCAB524F}.Release|x86.ActiveCfg = Release|Any CPU
+		{9789DDC4-6CC1-4A77-9883-D745BCAB524F}.Release|x86.Build.0 = Release|Any CPU
 		{92B0128E-57BA-4D6B-A2D9-26B54686F7D9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{92B0128E-57BA-4D6B-A2D9-26B54686F7D9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{92B0128E-57BA-4D6B-A2D9-26B54686F7D9}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{92B0128E-57BA-4D6B-A2D9-26B54686F7D9}.Debug|x64.Build.0 = Debug|Any CPU
+		{92B0128E-57BA-4D6B-A2D9-26B54686F7D9}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{92B0128E-57BA-4D6B-A2D9-26B54686F7D9}.Debug|x86.Build.0 = Debug|Any CPU
 		{92B0128E-57BA-4D6B-A2D9-26B54686F7D9}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{92B0128E-57BA-4D6B-A2D9-26B54686F7D9}.Release|Any CPU.Build.0 = Release|Any CPU
+		{92B0128E-57BA-4D6B-A2D9-26B54686F7D9}.Release|x64.ActiveCfg = Release|Any CPU
+		{92B0128E-57BA-4D6B-A2D9-26B54686F7D9}.Release|x64.Build.0 = Release|Any CPU
+		{92B0128E-57BA-4D6B-A2D9-26B54686F7D9}.Release|x86.ActiveCfg = Release|Any CPU
+		{92B0128E-57BA-4D6B-A2D9-26B54686F7D9}.Release|x86.Build.0 = Release|Any CPU
 		{DC858972-8F2F-4E79-A455-154D58EC47AE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{DC858972-8F2F-4E79-A455-154D58EC47AE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{DC858972-8F2F-4E79-A455-154D58EC47AE}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{DC858972-8F2F-4E79-A455-154D58EC47AE}.Debug|x64.Build.0 = Debug|Any CPU
+		{DC858972-8F2F-4E79-A455-154D58EC47AE}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{DC858972-8F2F-4E79-A455-154D58EC47AE}.Debug|x86.Build.0 = Debug|Any CPU
 		{DC858972-8F2F-4E79-A455-154D58EC47AE}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{DC858972-8F2F-4E79-A455-154D58EC47AE}.Release|Any CPU.Build.0 = Release|Any CPU
+		{DC858972-8F2F-4E79-A455-154D58EC47AE}.Release|x64.ActiveCfg = Release|Any CPU
+		{DC858972-8F2F-4E79-A455-154D58EC47AE}.Release|x64.Build.0 = Release|Any CPU
+		{DC858972-8F2F-4E79-A455-154D58EC47AE}.Release|x86.ActiveCfg = Release|Any CPU
+		{DC858972-8F2F-4E79-A455-154D58EC47AE}.Release|x86.Build.0 = Release|Any CPU
 		{ABAE045F-7B99-4C72-83F7-8F37209B5D8C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{ABAE045F-7B99-4C72-83F7-8F37209B5D8C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{ABAE045F-7B99-4C72-83F7-8F37209B5D8C}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{ABAE045F-7B99-4C72-83F7-8F37209B5D8C}.Debug|x64.Build.0 = Debug|Any CPU
+		{ABAE045F-7B99-4C72-83F7-8F37209B5D8C}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{ABAE045F-7B99-4C72-83F7-8F37209B5D8C}.Debug|x86.Build.0 = Debug|Any CPU
 		{ABAE045F-7B99-4C72-83F7-8F37209B5D8C}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{ABAE045F-7B99-4C72-83F7-8F37209B5D8C}.Release|Any CPU.Build.0 = Release|Any CPU
+		{ABAE045F-7B99-4C72-83F7-8F37209B5D8C}.Release|x64.ActiveCfg = Release|Any CPU
+		{ABAE045F-7B99-4C72-83F7-8F37209B5D8C}.Release|x64.Build.0 = Release|Any CPU
+		{ABAE045F-7B99-4C72-83F7-8F37209B5D8C}.Release|x86.ActiveCfg = Release|Any CPU
+		{ABAE045F-7B99-4C72-83F7-8F37209B5D8C}.Release|x86.Build.0 = Release|Any CPU
 		{BCDCE0D6-4A71-49CF-8F81-1233FB14DEA3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{BCDCE0D6-4A71-49CF-8F81-1233FB14DEA3}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BCDCE0D6-4A71-49CF-8F81-1233FB14DEA3}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{BCDCE0D6-4A71-49CF-8F81-1233FB14DEA3}.Debug|x64.Build.0 = Debug|Any CPU
+		{BCDCE0D6-4A71-49CF-8F81-1233FB14DEA3}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{BCDCE0D6-4A71-49CF-8F81-1233FB14DEA3}.Debug|x86.Build.0 = Debug|Any CPU
 		{BCDCE0D6-4A71-49CF-8F81-1233FB14DEA3}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{BCDCE0D6-4A71-49CF-8F81-1233FB14DEA3}.Release|Any CPU.Build.0 = Release|Any CPU
+		{BCDCE0D6-4A71-49CF-8F81-1233FB14DEA3}.Release|x64.ActiveCfg = Release|Any CPU
+		{BCDCE0D6-4A71-49CF-8F81-1233FB14DEA3}.Release|x64.Build.0 = Release|Any CPU
+		{BCDCE0D6-4A71-49CF-8F81-1233FB14DEA3}.Release|x86.ActiveCfg = Release|Any CPU
+		{BCDCE0D6-4A71-49CF-8F81-1233FB14DEA3}.Release|x86.Build.0 = Release|Any CPU
 		{37DA3363-09EC-4686-89A9-2D12B2472C52}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{37DA3363-09EC-4686-89A9-2D12B2472C52}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{37DA3363-09EC-4686-89A9-2D12B2472C52}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{37DA3363-09EC-4686-89A9-2D12B2472C52}.Debug|x64.Build.0 = Debug|Any CPU
+		{37DA3363-09EC-4686-89A9-2D12B2472C52}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{37DA3363-09EC-4686-89A9-2D12B2472C52}.Debug|x86.Build.0 = Debug|Any CPU
 		{37DA3363-09EC-4686-89A9-2D12B2472C52}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{37DA3363-09EC-4686-89A9-2D12B2472C52}.Release|Any CPU.Build.0 = Release|Any CPU
+		{37DA3363-09EC-4686-89A9-2D12B2472C52}.Release|x64.ActiveCfg = Release|Any CPU
+		{37DA3363-09EC-4686-89A9-2D12B2472C52}.Release|x64.Build.0 = Release|Any CPU
+		{37DA3363-09EC-4686-89A9-2D12B2472C52}.Release|x86.ActiveCfg = Release|Any CPU
+		{37DA3363-09EC-4686-89A9-2D12B2472C52}.Release|x86.Build.0 = Release|Any CPU
+		{4E150972-E056-4C80-A934-1136B20A3065}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4E150972-E056-4C80-A934-1136B20A3065}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4E150972-E056-4C80-A934-1136B20A3065}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{4E150972-E056-4C80-A934-1136B20A3065}.Debug|x64.Build.0 = Debug|Any CPU
+		{4E150972-E056-4C80-A934-1136B20A3065}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{4E150972-E056-4C80-A934-1136B20A3065}.Debug|x86.Build.0 = Debug|Any CPU
+		{4E150972-E056-4C80-A934-1136B20A3065}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4E150972-E056-4C80-A934-1136B20A3065}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4E150972-E056-4C80-A934-1136B20A3065}.Release|x64.ActiveCfg = Release|Any CPU
+		{4E150972-E056-4C80-A934-1136B20A3065}.Release|x64.Build.0 = Release|Any CPU
+		{4E150972-E056-4C80-A934-1136B20A3065}.Release|x86.ActiveCfg = Release|Any CPU
+		{4E150972-E056-4C80-A934-1136B20A3065}.Release|x86.Build.0 = Release|Any CPU
+		{AB0714F5-7BBC-4DAC-B622-2F5745A8C91C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{AB0714F5-7BBC-4DAC-B622-2F5745A8C91C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{AB0714F5-7BBC-4DAC-B622-2F5745A8C91C}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{AB0714F5-7BBC-4DAC-B622-2F5745A8C91C}.Debug|x64.Build.0 = Debug|Any CPU
+		{AB0714F5-7BBC-4DAC-B622-2F5745A8C91C}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{AB0714F5-7BBC-4DAC-B622-2F5745A8C91C}.Debug|x86.Build.0 = Debug|Any CPU
+		{AB0714F5-7BBC-4DAC-B622-2F5745A8C91C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{AB0714F5-7BBC-4DAC-B622-2F5745A8C91C}.Release|Any CPU.Build.0 = Release|Any CPU
+		{AB0714F5-7BBC-4DAC-B622-2F5745A8C91C}.Release|x64.ActiveCfg = Release|Any CPU
+		{AB0714F5-7BBC-4DAC-B622-2F5745A8C91C}.Release|x64.Build.0 = Release|Any CPU
+		{AB0714F5-7BBC-4DAC-B622-2F5745A8C91C}.Release|x86.ActiveCfg = Release|Any CPU
+		{AB0714F5-7BBC-4DAC-B622-2F5745A8C91C}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -83,6 +187,8 @@ Global
 		{ABAE045F-7B99-4C72-83F7-8F37209B5D8C} = {5D3D85C6-7B3B-4D7E-925F-33B19AE15D76}
 		{BCDCE0D6-4A71-49CF-8F81-1233FB14DEA3} = {5D3D85C6-7B3B-4D7E-925F-33B19AE15D76}
 		{37DA3363-09EC-4686-89A9-2D12B2472C52} = {9FF90A72-EC14-4C15-921F-DB7AE3D1D34C}
+		{4E150972-E056-4C80-A934-1136B20A3065} = {9FF90A72-EC14-4C15-921F-DB7AE3D1D34C}
+		{AB0714F5-7BBC-4DAC-B622-2F5745A8C91C} = {9FF90A72-EC14-4C15-921F-DB7AE3D1D34C}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {D173946A-BDF7-44A8-9740-2156FA7EC074}

src/My.Extensions.Localization.Json/JsonStringLocalizerFactory.cs

@@ -47,10 +47,10 @@ public IStringLocalizer Create(Type resourceSource)
 
         var typeInfo = resourceSource.GetTypeInfo();
         var assembly = typeInfo.Assembly;
-        var assemblyName = resourceSource.Assembly.GetName().Name;
-        var typeName = $"{assemblyName}.{typeInfo.Name}" == typeInfo.FullName
+        var rootNamespace = GetRootNamespace(assembly);
+        var typeName = $"{rootNamespace}.{typeInfo.Name}" == typeInfo.FullName
             ? typeInfo.Name
-            : TrimPrefix(typeInfo.FullName, assemblyName + ".");
+            : TrimPrefix(typeInfo.FullName, rootNamespace + ".");
 
         resourcesPath = Path.Combine(PathHelpers.GetApplicationRoot(), GetResourcePath(assembly));
         typeName = TryFixInnerClassPath(typeName);
@@ -79,7 +79,8 @@ public IStringLocalizer Create(string baseName, string location)
             if (_resourcesType == ResourcesType.TypeBased)
             {
                 baseName = TryFixInnerClassPath(baseName);
-                resourceName = TrimPrefix(baseName, location + ".");
+                var rootNamespace = GetRootNamespace(assembly);
+                resourceName = TrimPrefix(baseName, rootNamespace + ".");
             }
 
             return CreateJsonStringLocalizer(resourcesPath, resourceName);
@@ -107,6 +108,14 @@ private string GetResourcePath(Assembly assembly)
             : resourceLocationAttribute.ResourceLocation;
     }
 
+    private static string GetRootNamespace(Assembly assembly)
+    {
+        var rootNamespaceAttribute = assembly.GetCustomAttribute<RootNamespaceAttribute>();
+
+        return rootNamespaceAttribute?.RootNamespace
+            ?? assembly.GetName().Name;
+    }
+
     private static string TrimPrefix(string name, string prefix)
     {
         if (name.StartsWith(prefix, StringComparison.Ordinal))

test/My.Extensions.Localization.Json.Tests/JsonStringLocalizerFactoryTests.cs

@@ -1,7 +1,4 @@
-using System;
-using System.Net;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.TestHost;
@@ -12,6 +9,8 @@
 using Microsoft.Extensions.Options;
 using Moq;
 using My.Extensions.Localization.Json.Tests.Common;
+using System;
+using System.Threading.Tasks;
 using Xunit;
 
 namespace My.Extensions.Localization.Json.Tests;
@@ -86,7 +85,7 @@
     [Fact]
     public async Task LocalizerReturnsTranslationFromInnerClass()
     {
         var webHostBuilder = new WebHostBuilder()
             .ConfigureServices(services =>
             {
                 services.AddJsonLocalization(options => options.ResourcesPath = "Resources");
@@ -107,11 +106,83 @@
                 });
             });
 
         using var server = new TestServer(webHostBuilder);
         var client = server.CreateClient();
         var response = await client.GetAsync("/");
     }
 
+    [Fact]
+    public void CreateLocalizerWithType_WithoutRootNamespaceAttribute_UsesAssemblyName()
+    {
+        SetupLocalizationOptions("Resources");
+        LocalizationHelper.SetCurrentCulture("en");
+
+        // Arrange
+        var localizerFactory = new JsonStringLocalizerFactory(_localizationOptions.Object, _loggerFactory);
+
+        // Act
+        var localizer = localizerFactory.Create(typeof(ResourcesClassLibraryNoAttribute.TestModel));
+
+        // Assert
+        Assert.NotNull(localizer);
+        Assert.Equal("Hello from NoAttribute", localizer["Hello"]);
+    }
+
+    [Fact]
+    public void CreateLocalizerWithType_WithRootNamespaceAttribute_UsesRootNamespace()
+    {
+        SetupLocalizationOptions("Resources");
+        LocalizationHelper.SetCurrentCulture("en");
+
+        // Arrange
+        var localizerFactory = new JsonStringLocalizerFactory(_localizationOptions.Object, _loggerFactory);
+
+        // Act
+        var localizer = localizerFactory.Create(typeof(MyCustomNamespace.TestModel));
+
+        // Assert
+        Assert.NotNull(localizer);
+        Assert.Equal("Hello from WithAttribute", localizer["Hello"]);
+    }
+
+    [Fact]
+    public void CreateLocalizerWithBasenameAndLocation_WithoutRootNamespaceAttribute()
+    {
+        SetupLocalizationOptions("Resources");
+        LocalizationHelper.SetCurrentCulture("fr-FR");
+
+        // Arrange
+        var localizerFactory = new JsonStringLocalizerFactory(_localizationOptions.Object, _loggerFactory);
+        var location = "ResourcesClassLibraryNoAttribute";
+        var basename = $"{location}.TestModel";
+
+        // Act
+        var localizer = localizerFactory.Create(basename, location);
+
+        // Assert
+        Assert.NotNull(localizer);
+        Assert.Equal("Bonjour from NoAttribute", localizer["Hello"]);
+    }
+
+    [Fact]
+    public void CreateLocalizerWithBasenameAndLocation_WithRootNamespaceAttribute()
+    {
+        SetupLocalizationOptions("Resources");
+        LocalizationHelper.SetCurrentCulture("fr-FR");
+
+        // Arrange
+        var localizerFactory = new JsonStringLocalizerFactory(_localizationOptions.Object, _loggerFactory);
+        var location = "ResourcesClassLibraryWithAttribute";
+        var basename = "MyCustomNamespace.TestModel";
+
+        // Act
+        var localizer = localizerFactory.Create(basename, location);
+
+        // Assert
+        Assert.NotNull(localizer);
+        Assert.Equal("Bonjour from WithAttribute", localizer["Hello"]);
+    }
+
     private void SetupLocalizationOptions(string resourcesPath, ResourcesType resourcesType = ResourcesType.TypeBased)
         => _localizationOptions.Setup(o => o.Value)
             .Returns(() => new JsonLocalizationOptions {

test/My.Extensions.Localization.Json.Tests/My.Extensions.Localization.Json.Tests.csproj

@@ -18,6 +18,8 @@
 
   <ItemGroup>
     <ProjectReference Include="..\..\src\My.Extensions.Localization.Json\My.Extensions.Localization.Json.csproj" />
+    <ProjectReference Include="..\ResourcesClassLibraryNoAttribute\ResourcesClassLibraryNoAttribute.csproj" />
+    <ProjectReference Include="..\ResourcesClassLibraryWithAttribute\ResourcesClassLibraryWithAttribute.csproj" />
   </ItemGroup>
 
   <ItemGroup>

test/ResourcesClassLibraryNoAttribute/AssemblyInfo.cs

@@ -0,0 +1,3 @@
+using Microsoft.Extensions.Localization;
+
+[assembly: ResourceLocation("Resources/NoAttr")]

test/ResourcesClassLibraryNoAttribute/Class1.cs

@@ -0,0 +1,6 @@
+namespace ResourcesClassLibraryNoAttribute;
+
+public class TestModel
+{
+    public string Name { get; set; }
+}

test/ResourcesClassLibraryNoAttribute/Resources/NoAttr/TestModel.en.json

@@ -0,0 +1,3 @@
+{
+  "Hello": "Hello from NoAttribute"
+}

test/ResourcesClassLibraryNoAttribute/Resources/NoAttr/TestModel.fr-FR.json

@@ -0,0 +1,3 @@
+{
+  "Hello": "Bonjour from NoAttribute"
+}

test/ResourcesClassLibraryNoAttribute/ResourcesClassLibraryNoAttribute.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Localization" Version="10.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Update="Resources\**\*.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+</Project>

test/ResourcesClassLibraryWithAttribute/AssemblyInfo.cs

@@ -0,0 +1,4 @@
+using Microsoft.Extensions.Localization;
+
+[assembly: RootNamespace("MyCustomNamespace")]
+[assembly: ResourceLocation("Resources/WithAttr")]

test/ResourcesClassLibraryWithAttribute/Class1.cs

@@ -0,0 +1,6 @@
+namespace MyCustomNamespace;
+
+public class TestModel
+{
+    public string Name { get; set; }
+}

test/ResourcesClassLibraryWithAttribute/Resources/WithAttr/TestModel.en.json

@@ -0,0 +1,3 @@
+{
+  "Hello": "Hello from WithAttribute"
+}

test/ResourcesClassLibraryWithAttribute/Resources/WithAttr/TestModel.fr-FR.json

@@ -0,0 +1,3 @@
+{
+  "Hello": "Bonjour from WithAttribute"
+}

test/ResourcesClassLibraryWithAttribute/ResourcesClassLibraryWithAttribute.csproj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <RootNamespace>MyCustomNamespace</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Localization" Version="10.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Update="Resources\**\*.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+</Project>