Produce correct blazor.boot.json when using StaticWebAssetBasePath

src/Components/WebAssembly/Sdk/integrationtests/WasmPublishIntegrationTest.cs

@@ -970,6 +970,58 @@ public async Task Publish_WithInvariantGlobalizationEnabled_DoesNotCopyGlobaliza
             Assert.FileDoesNotExist(result, publishOutputDirectory, "wwwroot", "_framework", "icudt_no_CJK.dat");
         }
 
+        [Fact]
+        public async Task Publish_HostingMultipleBlazorWebApps_Works()
+        {
+            // Regression test for https://github.com/dotnet/aspnetcore/issues/29264
+            // Arrange
+            using var project = ProjectDirectory.Create("BlazorMultipleApps.Server", "BlazorMultipleApps.FirstClient", "BlazorMultipleApps.SecondClient", "BlazorMultipleApps.Shared");
+            var result = await MSBuildProcessManager.DotnetMSBuild(project, "Publish");
+
+            var publishOutputDirectory = project.PublishOutputDirectory;
+
+            Assert.FileExists(result, Path.Combine(publishOutputDirectory, "BlazorMultipleApps.Server.dll"));
+            Assert.FileExists(result, Path.Combine(publishOutputDirectory, "BlazorMultipleApps.FirstClient.dll"));
+            Assert.FileExists(result, Path.Combine(publishOutputDirectory, "BlazorMultipleApps.SecondClient.dll"));
+
+            var firstAppPublishDirectory = Path.Combine(publishOutputDirectory, "wwwroot", "FirstApp");
+
+            var firstCss = Assert.FileExists(result, Path.Combine(firstAppPublishDirectory, "css", "app.css"));
+            Assert.FileContains(result, firstCss, "/* First app.css */");
+
+            var firstBootJsonPath = Path.Combine(firstAppPublishDirectory, "_framework", "blazor.boot.json");
+            var firstBootJson = ReadBootJsonData(result, firstBootJsonPath);
+
+            // Do a sanity check that the boot json has files.
+            Assert.Contains("System.Text.Json.dll", firstBootJson.resources.assembly.Keys);
+
+            VerifyBootManifestHashes(result, firstAppPublishDirectory);
+
+            // Verify compression works
+            Assert.FileExists(result, firstAppPublishDirectory, "_framework", "dotnet.wasm.br");
+            Assert.FileExists(result, firstAppPublishDirectory, "_framework", "BlazorMultipleApps.FirstClient.dll.br");
+            Assert.FileExists(result, firstAppPublishDirectory, "_framework", "System.Text.Json.dll.br");
+
+            var secondAppPublishDirectory = Path.Combine(publishOutputDirectory, "wwwroot", "SecondApp");
+
+            var secondCss = Assert.FileExists(result, Path.Combine(secondAppPublishDirectory, "css", "app.css"));
+            Assert.FileContains(result, secondCss, "/* Second app.css */");
+
+            var secondBootJsonPath = Path.Combine(secondAppPublishDirectory, "_framework", "blazor.boot.json");
+            var secondBootJson = ReadBootJsonData(result, secondBootJsonPath);
+
+            // Do a sanity check that the boot json has files.
+            Assert.Contains("System.Private.CoreLib.dll", secondBootJson.resources.assembly.Keys);
+
+            VerifyBootManifestHashes(result, secondAppPublishDirectory);
+
+            // Verify compression works
+            Assert.FileExists(result, secondAppPublishDirectory, "_framework", "dotnet.wasm.br");
+            Assert.FileExists(result, secondAppPublishDirectory, "_framework", "BlazorMultipleApps.SecondClient.dll.br");
+            Assert.FileExists(result, secondAppPublishDirectory, "_framework", "System.Private.CoreLib.dll.br");
+            Assert.FileDoesNotExist(result, secondAppPublishDirectory, "_framework", "System.Text.Json.dll.br");
+        }
+
         private static void AddWasmProjectContent(ProjectDirectory project, string content)
         {
             var path = Path.Combine(project.SolutionPath, "blazorwasm", "blazorwasm.csproj");
@@ -1022,7 +1074,6 @@ static string ParseWebFormattedHash(string webFormattedHash)
             }
         }
 
-
         private void VerifyTypeGranularTrimming(MSBuildResult result, string blazorPublishDirectory)
         {
             var componentsShimAssemblyPath = Path.Combine(blazorPublishDirectory, "_framework", "Microsoft.AspNetCore.Razor.Test.ComponentShim.dll");

src/Components/WebAssembly/Sdk/src/targets/Microsoft.NET.Sdk.BlazorWebAssembly.Current.targets

@@ -509,7 +509,7 @@ Copyright (c) .NET Foundation. All rights reserved.
     <ItemGroup>
       <_BlazorPublishBootResource
         Include="@(ResolvedFileToPublish)"
-        Condition="$([System.String]::Copy('%(RelativePath)').Replace('\','/').StartsWith('wwwroot/_framework')) AND '%(Extension)' != '.a'" />
+        Condition="$([System.String]::Copy('%(RelativePath)').Replace('\','/').StartsWith($(_BlazorFrameworkPublishPath.Replace('\', '/')))) AND '%(Extension)' != '.a'" />
     </ItemGroup>
 
     <GetFileHash Files="@(_BlazorPublishBootResource)" Algorithm="SHA256" HashEncoding="base64">

src/Components/WebAssembly/Sdk/testassets/BlazorMultipleApps.FirstClient/App.razor

@@ -0,0 +1 @@
+<h1>@typeof(BlazorMultipleApps.FirstClient.Program)</h1>

src/Components/WebAssembly/Sdk/testassets/BlazorMultipleApps.FirstClient/BlazorMultipleApps.FirstClient.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk.BlazorWebAssembly">
+
+  <PropertyGroup>
+    <TargetFramework>net5.0</TargetFramework>
+    <StaticWebAssetBasePath>FirstApp</StaticWebAssetBasePath>
+    <RazorSdkDirectoryRoot>$(RazorSdkArtifactsDirectory)$(Configuration)\sdk-output\</RazorSdkDirectoryRoot>
+    <BlazorWebAssemblySdkDirectoryRoot>$(BlazorWebAssemblySdkArtifactsDirectory)$(Configuration)\sdk-output\</BlazorWebAssemblySdkDirectoryRoot>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BlazorMultipleApps.Shared\BlazorMultipleApps.Shared.csproj" />
+  </ItemGroup>
+
+  <PropertyGroup Condition="'$(BinariesRoot)'==''">
+    <!-- In test scenarios $(BinariesRoot) is defined in a generated Directory.Build.props file -->
+    <BinariesRoot>$(RepoRoot)artifacts\bin\Microsoft.AspNetCore.Razor.Test.MvcShim.ClassLib\$(Configuration)\netstandard2.0\</BinariesRoot>
+  </PropertyGroup>
+
+  <!-- DO NOT add addition references here. This is meant to simulate a non-MVC library -->
+  <ItemGroup Condition="'$(BinariesRoot)'!=''">
+    <Reference Include="$(BinariesRoot)\Microsoft.AspNetCore.Razor.Test.ComponentShim.dll"/>
+  </ItemGroup>
+
+</Project>

src/Components/WebAssembly/Sdk/testassets/BlazorMultipleApps.FirstClient/Program.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using System.Text;
+
+namespace BlazorMultipleApps.FirstClient
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            GC.KeepAlive(typeof(System.Text.Json.JsonSerializer));
+        }
+    }
+}

src/Components/WebAssembly/Sdk/testassets/BlazorMultipleApps.FirstClient/wwwroot/css/app.css

@@ -0,0 +1 @@
+/* First app.css */

src/Components/WebAssembly/Sdk/testassets/BlazorMultipleApps.FirstClient/wwwroot/index.html

@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+    <title>BlazorMultipleApps</title>
+    <base href="/FirstApp/" />
+    <link href="css/app.css" rel="stylesheet" />
+</head>
+
+<body>
+    <script src="_framework/blazor.webassembly.js"></script>
+</body>
+
+</html>

src/Components/WebAssembly/Sdk/testassets/BlazorMultipleApps.SecondClient/App.razor

@@ -0,0 +1 @@
+<h1>@typeof(BlazorMultipleApps.SecondClient.Program)</h1>

src/Components/WebAssembly/Sdk/testassets/BlazorMultipleApps.SecondClient/BlazorMultipleApps.SecondClient.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk.BlazorWebAssembly">
+
+  <PropertyGroup>
+    <TargetFramework>net5.0</TargetFramework>
+    <StaticWebAssetBasePath>SecondApp</StaticWebAssetBasePath>
+    <RazorSdkDirectoryRoot>$(RazorSdkArtifactsDirectory)$(Configuration)\sdk-output\</RazorSdkDirectoryRoot>
+    <BlazorWebAssemblySdkDirectoryRoot>$(BlazorWebAssemblySdkArtifactsDirectory)$(Configuration)\sdk-output\</BlazorWebAssemblySdkDirectoryRoot>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BlazorMultipleApps.Shared\BlazorMultipleApps.Shared.csproj" />
+  </ItemGroup>
+
+  <PropertyGroup Condition="'$(BinariesRoot)'==''">
+    <!-- In test scenarios $(BinariesRoot) is defined in a generated Directory.Build.props file -->
+    <BinariesRoot>$(RepoRoot)artifacts\bin\Microsoft.AspNetCore.Razor.Test.MvcShim.ClassLib\$(Configuration)\netstandard2.0\</BinariesRoot>
+  </PropertyGroup>
+
+  <!-- DO NOT add addition references here. This is meant to simulate a non-MVC library -->
+  <ItemGroup Condition="'$(BinariesRoot)'!=''">
+    <Reference Include="$(BinariesRoot)\Microsoft.AspNetCore.Razor.Test.ComponentShim.dll"/>
+  </ItemGroup>
+
+</Project>

src/Components/WebAssembly/Sdk/testassets/BlazorMultipleApps.SecondClient/Program.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+
+namespace BlazorMultipleApps.SecondClient
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+        }
+    }
+}

src/Components/WebAssembly/Sdk/testassets/BlazorMultipleApps.SecondClient/wwwroot/css/app.css

@@ -0,0 +1 @@
+/* Second app.css */

src/Components/WebAssembly/Sdk/testassets/BlazorMultipleApps.SecondClient/wwwroot/index.html

@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+    <title>SecondBlazorApp</title>
+    <base href="/SecondApp/" />
+    <link href="css/app.css" rel="stylesheet" />
+</head>
+
+<body>
+    <script src="_framework/blazor.webassembly.js"></script>
+</body>
+
+</html>

src/Components/WebAssembly/Sdk/testassets/BlazorMultipleApps.Server/BlazorMultipleApps.Server.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net5.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BlazorMultipleApps.SecondClient\BlazorMultipleApps.SecondClient.csproj" />
+    <ProjectReference Include="..\BlazorMultipleApps.FirstClient\BlazorMultipleApps.FirstClient.csproj" />
+    <ProjectReference Include="..\BlazorMultipleApps.Shared\BlazorMultipleApps.Shared.csproj" />
+  </ItemGroup>
+
+
+</Project>

src/Components/WebAssembly/Sdk/testassets/BlazorMultipleApps.Server/Program.cs

@@ -0,0 +1,10 @@
+namespace BlazorMultipleApps.Server
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+
+        }
+    }
+}

src/Components/WebAssembly/Sdk/testassets/BlazorMultipleApps.Shared/BlazorMultipleApps.Shared.csproj

@@ -0,0 +1,7 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.1</TargetFramework>
+  </PropertyGroup>
+
+</Project>

src/Components/WebAssembly/Sdk/testassets/BlazorMultipleApps.Shared/WeatherForecast.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace BlazorMultipleApps.Shared
+{
+    public class WeatherForecast
+    {
+        public DateTime Date { get; set; }
+
+        public int TemperatureC { get; set; }
+
+        public string Summary { get; set; }
+
+        public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
+    }
+}

src/Components/WebAssembly/Sdk/testassets/RestoreBlazorWasmTestProjects/RestoreBlazorWasmTestProjects.csproj

@@ -9,6 +9,7 @@
     <ProjectReference Include="..\blazorwasm\blazorwasm.csproj" />
     <ProjectReference Include="..\blazorwasm-minimal\blazorwasm-minimal.csproj" />
     <ProjectReference Include="..\blazorwasm-fxref\blazorwasm-fxref.csproj" />
+    <ProjectReference Include="..\BlazorMultipleApps.Server\BlazorMultipleApps.Server.csproj" />
   </ItemGroup>
 
 </Project>