[browser] CoreCLR in-tree

[maraf]

TODO

• MainAssemblyName needs to end with .dll
• Xharness with symbolicator fails
  • XHarness is .NET 9, but we are building plugins as .NET 10. The same problem is with RemoveLoopServer
• WasmTestRunner is dependent on nested publish AddTestRunnersToPublishedFiles -> ComputeResolvedFilesToPublishList -> WasmTriggerPublishApp
• Most of with*** function in test-main.js are undefined on CoreCLR
• FileNotFoundException: Could not load file or assembly '/System.Console.Tests.dll'
  • It's Assembly.LoadFrom(TestAssembly). Mono knows "app" assemblies are loaded; CoreCLR requires to load them through VFS

The runtime pack now contains all the necessary files

Errors

Xharness with symbolicator fails

  [11.0.0-prerelease.25603.1+3df2923500447ee925d59f026c81720c7a9b4e4b] XHarness command issued: wasm test-browser --app=. --output-directory=D:\Development\dotnet\runtime\artifacts\bin\System.Console.Tests\Debug\net11.0\browser-wasm\wwwroot\xharness-output -s dotnet.native.js.symbols --symbol-patterns wasm-symbol-patterns.txt --symbolicator WasmSymbolicator.dll,Microsoft.WebAssembly.Internal.SymbolicatorWrapperForXHarness --browser-path=D:\Development\dotnet\runtime\artifacts\bin\chrome\chrome-win\chrome.exe --timeout=00:30:00 --browser-arg=--js-flags=--stack-trace-limit=1000 --browser-arg=--disable-gpu --pageLoadStrategy=none -- --run WasmTestRunner.dll System.Console.Tests.dll -notrait category=OuterLoop -notrait category=failing
  crit: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types.
        Could not load file or assembly 'System.Runtime, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
        Could not load file or assembly 'System.Runtime, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
        Could not load file or assembly 'System.Runtime, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
        Could not load file or assembly 'System.Runtime, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
        Could not load file or assembly 'System.Runtime, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
           at System.Reflection.RuntimeModule.GetDefinedTypes()
           at System.Reflection.RuntimeModule.GetTypes()
           at Microsoft.DotNet.XHarness.CLI.CommandArguments.TypeFromAssemblyArgument`1.GetLoadedTypes()+MoveNext() in /_/src/Microsoft.DotNet.XHarness.CLI/CommandArguments/Arguments/TypeFromAssemblyArgument.cs:line 29
           at System.Linq.Enumerable.TryGetFirstNonIterator[TSource](IEnumerable`1 source, Boolean& found)
           at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source)
           at Microsoft.DotNet.XHarness.CLI.Commands.Wasm.WasmTestBrowserCommand.InvokeInternal(ILogger logger) in /_/src/Microsoft.DotNet.XHarness.CLI/Commands/WASM/Browser/WasmTestBrowserCommand.cs:line 48
           at Microsoft.DotNet.XHarness.CLI.Commands.XHarnessCommand`1.Invoke(IEnumerable`1 arguments) in /_/src/Microsoft.DotNet.XHarness.CLI/Commands/XHarnessCommand.cs:line 145
        System.IO.FileNotFoundException: Could not load file or assembly 'System.Runtime, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
        File name: 'System.Runtime, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
        System.IO.FileNotFoundException: Could not load file or assembly 'System.Runtime, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
        File name: 'System.Runtime, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
        System.IO.FileNotFoundException: Could not load file or assembly 'System.Runtime, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
        File name: 'System.Runtime, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
        System.IO.FileNotFoundException: Could not load file or assembly 'System.Runtime, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
        File name: 'System.Runtime, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
        System.IO.FileNotFoundException: Could not load file or assembly 'System.Runtime, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
        File name: 'System.Runtime, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
  XHarness exit code: 71 (GENERAL_FAILURE)
  ----- end 2025-12-12 13:48:03.71 ----- exit code 71 ----------------------------------------------------------
  XHarness artifacts: D:\Development\dotnet\runtime\artifacts\bin\System.Console.Tests\Debug\net11.0\browser-wasm\wwwroot\xharness-output

FileNotFoundException: Could not load file or assembly '/System.Console.Tests.dll'

``` dotnet.js:945 DOTNET: FileNotFoundException: Could not load file or assembly '/System.Console.Tests.dll'. The system cannot find the file specified.

at System.Runtime.Loader.AssemblyLoadContext.g____PInvoke|5_0(:63603/IntPtr __ptrNativeAssemblyBinder_native, UInt16* __ilPath_native, UInt16* __niPath_native, ObjectHandleOnStack __retAssembly_native)
at System.Runtime.Loader.AssemblyLoadContext.LoadFromPath(:63603/IntPtr ptrNativeAssemblyBinder, String ilPath, String niPath, ObjectHandleOnStack retAssembly)
at System.Runtime.Loader.AssemblyLoadContext.InternalLoadFromPath(:63603/String assemblyPath, String nativeImagePath)
at System.Runtime.Loader.AssemblyLoadContext.LoadFromAssemblyPath(:63603/String assemblyPath)
at System.Reflection.Assembly.LoadFrom(:63603/String assemblyFile)
at Microsoft.DotNet.XHarness.TestRunners.Xunit.WasmApplicationEntryPoint.GetTestAssemblies(index.html?arg=--run&arg=WasmTestRunner.dll&arg=System.Console.Tests.dll&arg=-notrait&arg=category%…)
at Microsoft.DotNet.XHarness.TestRunners.Common.ApplicationEntryPoint.InternalRunAsync(:63603/LogWriter logger)
at Microsoft.DotNet.XHarness.TestRunners.Common.ApplicationEntryPoint.InternalRunAsync(:63603/ApplicationOptions options, TextWriter loggerWriter, TextWriter resultsFile)
at Microsoft.DotNet.XHarness.TestRunners.Common.WasmApplicationEntryPointBase.RunAsync(index.html?arg=--run&arg=WasmTestRunner.dll&arg=System.Console.Tests.dll&arg=-notrait&arg=category%…)
at Microsoft.DotNet.XHarness.TestRunners.Xunit.WasmApplicationEntryPoint.Run(index.html?arg=--run&arg=WasmTestRunner.dll&arg=System.Console.Tests.dll&arg=-notrait&arg=category%…)
at WasmTestRunner.MainAsync(:63603/String[] args)

</details>