[browser] Fix processing of satellite assemblies from referenced asse…

…mbly during publish (dotnet#106696)

src/mono/wasm/Wasm.Build.Tests/TestAppScenarios/SatelliteLoadingTests.cs

@@ -11,6 +11,7 @@
 using Microsoft.Playwright;
 using Xunit.Abstractions;
 using Xunit;
+using System.Xml.Linq;
 
 #nullable enable
 
@@ -38,4 +39,44 @@ public async Task LoadSatelliteAssembly()
             m => Assert.Equal("es-ES with satellite: hola", m)
         );
     }
+
+    [Fact]
+    public async Task LoadSatelliteAssemblyFromReference()
+    {
+        CopyTestAsset("WasmBasicTestApp", "SatelliteLoadingTestsFromReference", "App");
+
+        // Replace ProjectReference with Reference
+        var appCsprojPath = Path.Combine(_projectDir!, "WasmBasicTestApp.csproj");
+        var appCsproj = XDocument.Load(appCsprojPath);
+
+        var projectReference = appCsproj.Descendants("ProjectReference").Where(pr => pr.Attribute("Include")?.Value?.Contains("ResourceLibrary") ?? false).Single();
+        var itemGroup = projectReference.Parent!;
+        projectReference.Remove();
+
+        var reference = new XElement("Reference");
+        reference.SetAttributeValue("Include", "..\\ResourceLibrary\\bin\\Release\\net9.0\\ResourceLibrary.dll");
+        itemGroup.Add(reference);
+
+        appCsproj.Save(appCsprojPath);
+
+        // Build the library
+        var libraryCsprojPath = Path.GetFullPath(Path.Combine(_projectDir!, "..", "ResourceLibrary"));
+        new DotNetCommand(s_buildEnv, _testOutput)
+            .WithWorkingDirectory(libraryCsprojPath)
+            .WithEnvironmentVariable("NUGET_PACKAGES", _nugetPackagesDir)
+            .ExecuteWithCapturedOutput("build -c Release")
+            .EnsureSuccessful();
+
+        // Publish the app and assert
+        PublishProject("Release");
+
+        var result = await RunSdkStyleAppForPublish(new(Configuration: "Release", TestScenario: "SatelliteAssembliesTest"));
+        Assert.Collection(
+            result.TestOutput,
+            m => Assert.Equal("default: hello", m),
+            m => Assert.Equal("es-ES without satellite: hello", m),
+            m => Assert.Equal("default: hello", m),
+            m => Assert.Equal("es-ES with satellite: hola", m)
+        );
+    }
 }

src/mono/wasm/build/WasmApp.Common.targets

@@ -442,7 +442,7 @@
     <!-- Use a unique property, so the already run wasm targets can also run -->
     <MSBuild Projects="$(MSBuildProjectFile)"
              Targets="WasmNestedPublishApp"
-             Properties="_WasmInNestedPublish_UniqueProperty_XYZ=true;;WasmBuildingForNestedPublish=true;DeployOnBuild=;_IsPublishing=;_WasmIsPublishing=$(_IsPublishing)">
+             Properties="_WasmInNestedPublish_UniqueProperty_XYZ=true;;WasmBuildingForNestedPublish=true;DeployOnBuild=;_IsPublishing=;_WasmIsPublishing=$(_IsPublishing);ResolveAssemblyReferencesFindRelatedSatellites=true">
       <Output TaskParameter="TargetOutputs" ItemName="WasmNestedPublishAppResultItems" />
     </MSBuild>
 

src/mono/wasm/testassets/WasmBasicTestApp/App/SatelliteAssembliesTest.cs

@@ -2,25 +2,19 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 
 using System;
-using System.Globalization;
-using System.Threading.Tasks;
-using System.Resources;
 using System.Runtime.InteropServices.JavaScript;
+using System.Threading.Tasks;
 
 public partial class SatelliteAssembliesTest
 {
     [JSExport]
     public static async Task Run()
     {
-        var rm = new ResourceManager("WasmBasicTestApp.words", typeof(Program).Assembly);
-        TestOutput.WriteLine("default: " + rm.GetString("hello", CultureInfo.CurrentCulture));
-        TestOutput.WriteLine("es-ES without satellite: " + rm.GetString("hello", new CultureInfo("es-ES")));
+        ResourceLibrary.ResourceAccessor.Read(TestOutput.WriteLine, false);
 
         await LoadSatelliteAssemblies(new[] { "es-ES" });
 
-        rm = new ResourceManager("WasmBasicTestApp.words", typeof(Program).Assembly);
-        TestOutput.WriteLine("default: " + rm.GetString("hello", CultureInfo.CurrentCulture));
-        TestOutput.WriteLine("es-ES with satellite: " + rm.GetString("hello", new CultureInfo("es-ES")));
+        ResourceLibrary.ResourceAccessor.Read(TestOutput.WriteLine, true);
     }
 
     [JSImport("INTERNAL.loadSatelliteAssemblies")]

src/mono/wasm/testassets/WasmBasicTestApp/App/WasmBasicTestApp.csproj

@@ -16,6 +16,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\Library\Json.csproj" />
+    <ProjectReference Include="..\ResourceLibrary\ResourceLibrary.csproj" />
   </ItemGroup>
 
   <ItemGroup>

src/mono/wasm/testassets/WasmBasicTestApp/Library/Json.cs

@@ -1,3 +1,6 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
 using System.Text.Json;
 using System.Text.Json.Serialization;
 

src/mono/wasm/testassets/WasmBasicTestApp/ResourceLibrary/ResourceAccessor.cs

@@ -0,0 +1,19 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System;
+using System.Globalization;
+using System.Threading.Tasks;
+using System.Resources;
+
+namespace ResourceLibrary;
+
+public static class ResourceAccessor
+{
+    public static void Read(Action<string> testOuput, bool hasSatellites)
+    {
+        var rm = new ResourceManager("ResourceLibrary.words", typeof(ResourceAccessor).Assembly);
+        testOuput($"default: {rm.GetString("hello", CultureInfo.CurrentCulture)}");
+        testOuput($"es-ES {(hasSatellites ? "with" : "without")} satellite: {rm.GetString("hello", new CultureInfo("es-ES"))}");
+    }
+}

src/mono/wasm/testassets/WasmBasicTestApp/ResourceLibrary/ResourceLibrary.csproj

@@ -0,0 +1,7 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <OutputType>Library</OutputType>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+  </PropertyGroup>
+</Project>

src/tasks/Microsoft.NET.Sdk.WebAssembly.Pack.Tasks/ComputeWasmBuildAssets.cs

@@ -110,7 +110,12 @@ public override bool Execute()
                     assetCandidate.SetMetadata("AssetTraitName", "Culture");
                     assetCandidate.SetMetadata("AssetTraitValue", inferredCulture);
                     assetCandidate.SetMetadata("RelativePath", $"_framework/{inferredCulture}/{satelliteAssembly.GetMetadata("FileName")}{satelliteAssembly.GetMetadata("Extension")}");
-                    assetCandidate.SetMetadata("RelatedAsset", Path.GetFullPath(Path.Combine(OutputPath, "wwwroot", "_framework", Path.GetFileName(assetCandidate.GetMetadata("ResolvedFrom")))));
+
+                    var resolvedFrom = assetCandidate.GetMetadata("ResolvedFrom");
+                    if (resolvedFrom == "{RawFileName}") // Satellite assembly found from `<Reference />` element
+                        resolvedFrom = candidate.GetMetadata("OriginalItemSpec");
+
+                    assetCandidate.SetMetadata("RelatedAsset", Path.GetFullPath(Path.Combine(OutputPath, "wwwroot", "_framework", Path.GetFileName(resolvedFrom))));
 
                     assetCandidates.Add(assetCandidate);
                     continue;