dotnet · Evangelink · Jun 18, 2026 · Jun 18, 2026 · Jun 19, 2026 · Jun 22, 2026
@@ -1,4 +1,4 @@
-<Project Sdk="MSTest.Sdk">
+<Project Sdk="MSTest.Sdk">
 
   <PropertyGroup>
     <EnableDefaultItems>false</EnableDefaultItems>
@@ -9,6 +9,7 @@
   </PropertyGroup>
 
   <PropertyGroup>
+    <PackageId>testSdkBlazorWasmAoT</PackageId>
     <BuildHelixPayload Condition="'$(RunAoTTests)' != 'true'">false</BuildHelixPayload>
   </PropertyGroup>
 

@@ -5,6 +5,7 @@
 
 using System.Runtime.CompilerServices;
 using Microsoft.NET.Sdk.BlazorWebAssembly.Tests;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
 using static Microsoft.NET.Sdk.BlazorWebAssembly.Tests.ServiceWorkerAssert;
 
 namespace Microsoft.NET.Sdk.BlazorWebAssembly.AoT.Tests

@@ -50,8 +50,7 @@ public void Build50Hosted_Works()
 
         [TestMethod]
         [CoreMSBuildOnly]
-        // https://github.com/dotnet/sdk/issues/49665
-        [OSCondition(ConditionMode.Exclude, OperatingSystems.OSX)]
+        [OSCondition(ConditionMode.Exclude, OperatingSystems.OSX)] // https://github.com/dotnet/sdk/issues/49665
         public void Publish50Hosted_Works()
         {
             // Arrange

@@ -49,8 +49,7 @@ public void Build60Hosted_Works()
         [TestMethod]
         [OSCondition(OperatingSystems.Windows)]
         [RequiresMSBuildVersion("17.13")]
-        [Ignore("https://github.com/dotnet/sdk/issues/49925")] // https://github.com/dotnet/sdk/issues/44886
-        // https://github.com/dotnet/sdk/issues/42145
+        [Ignore("https://github.com/dotnet/sdk/issues/49925")] // https://github.com/dotnet/sdk/issues/44886, https://github.com/dotnet/sdk/issues/42145
         public void Publish60Hosted_Works()
         {
             // Arrange

@@ -5,8 +5,8 @@
 
 using System.Text.Json;
 using Microsoft.NET.Sdk.WebAssembly;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
 
+using Microsoft.VisualStudio.TestTools.UnitTesting;
 namespace Microsoft.NET.Sdk.BlazorWebAssembly.Tests
 {
     [TestClass]
@@ -273,4 +273,4 @@ public void Build_SatelliteAssembliesFileIsDeleted_IfAllSatelliteFilesAreRemoved
             satelliteResources.Should().BeNull();
         }
     }
-}
+}
@@ -7,15 +7,15 @@
 using System.Text.Json;
 using Microsoft.NET.Sdk.WebAssembly;
 using static Microsoft.NET.Sdk.BlazorWebAssembly.Tests.ServiceWorkerAssert;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
 
+using Microsoft.VisualStudio.TestTools.UnitTesting;
 namespace Microsoft.NET.Sdk.BlazorWebAssembly.Tests
 {
     [TestClass]
     public class WasmPublishIntegrationTest : WasmPublishIntegrationTestBase
     {
-
         [TestMethod]
+
         [RequiresMSBuildVersion("17.12")]
         public void Publish_MinimalApp_Works()
         {
@@ -1697,4 +1697,4 @@ public static DirectoryInfo GetOutputDirectory(this DotnetPublishCommand command
             return new DirectoryInfo(Path.Combine(baseDirectory.FullName, "publish"));
         }
     }
-}
+}
@@ -6,9 +6,9 @@
 using System.Text.Json;
 using System.Text.RegularExpressions;
 using static Microsoft.NET.Sdk.BlazorWebAssembly.Tests.ServiceWorkerAssert;
-using Microsoft.VisualStudio.TestTools.UnitTesting;
 
 
+using Microsoft.VisualStudio.TestTools.UnitTesting;
 namespace Microsoft.NET.Sdk.BlazorWebAssembly.Tests
 {
     [TestClass]
@@ -247,4 +247,4 @@ public void Publish_DeterministicAcrossBuilds_WhenNoSourcesChange()
             updatedCapture.Should().Be(capture);
         }
     }
-}
+}
diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/AspNetSdkBaselineTest.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/AspNetSdkBaselineTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Text.Json;

diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/AssetGroupsIntegrationTest.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/AssetGroupsIntegrationTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using System.IO.Compression;
 using Microsoft.AspNetCore.StaticWebAssets.Tasks;
 

diff --git a/...soft.NET.Sdk.StaticWebAssets.Tests/ComputeStaticWebAssetsTargetPathsMultiThreadingTest.cs b/...soft.NET.Sdk.StaticWebAssets.Tests/ComputeStaticWebAssetsTargetPathsMultiThreadingTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using Microsoft.AspNetCore.StaticWebAssets.Tasks;
 using Microsoft.Build.Framework;
 using Moq;

diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/ComputeStaticWebAssetsTargetPathsTest.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/ComputeStaticWebAssetsTargetPathsTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using System;
 using System.Collections.Generic;
 using System.Linq;

diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/DeferredAssetGroupsIntegrationTest.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/DeferredAssetGroupsIntegrationTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using System.Text.Json;
 using System.Xml.Linq;
 using Microsoft.AspNetCore.StaticWebAssets.Tasks;

diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/FrameworkAssetsIntegrationTest.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/FrameworkAssetsIntegrationTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.NET.TestFramework.Commands;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using System.IO.Compression;
 using System.Text.Json;
 using Microsoft.AspNetCore.StaticWebAssets.Tasks;

diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/FrameworkAssetsP2PIntegrationTest.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/FrameworkAssetsP2PIntegrationTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using System.Xml.Linq;
 using Microsoft.AspNetCore.StaticWebAssets.Tasks;
 

diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/GroupedFrameworkAssetsIntegrationTest.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/GroupedFrameworkAssetsIntegrationTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using System.Xml.Linq;
 using Microsoft.AspNetCore.StaticWebAssets.Tasks;
 

diff --git a/...icrosoft.NET.Sdk.StaticWebAssets.Tests/IsolatedNuGetPackageFolderAspNetSdkBaselineTest.cs b/...icrosoft.NET.Sdk.StaticWebAssets.Tests/IsolatedNuGetPackageFolderAspNetSdkBaselineTest.cs
@@ -7,8 +7,6 @@
 using Microsoft.NET.TestFramework.Commands;
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
-
-
 namespace Microsoft.NET.Sdk.StaticWebAssets.Tests
 {
     [TestCategory("NugetIsolation")]
@@ -18,13 +16,14 @@ namespace Microsoft.NET.Sdk.StaticWebAssets.Tests
     public abstract class IsolatedNuGetPackageFolderAspNetSdkBaselineTest : AspNetSdkBaselineTest
     {
         protected abstract string RestoreNugetPackagePath { get; }
+
         private string? _cachePath;
         protected override string GetNuGetCachePath() =>
             _cachePath ??= Path.GetFullPath(Path.Combine(SdkTestContext.Current.TestExecutionDirectory, Shorten(RestoreNugetPackagePath)));
-
         private static string Shorten(string restoreNugetPackagePath) =>
             restoreNugetPackagePath
                 .Replace("IntegrationTest", string.Empty, StringComparison.OrdinalIgnoreCase)
                 .Replace("Tests", string.Empty, StringComparison.OrdinalIgnoreCase);
+
     }
 }
diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/JsModulesIntegrationTest.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/JsModulesIntegrationTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using Microsoft.AspNetCore.StaticWebAssets.Tasks;
 
 namespace Microsoft.NET.Sdk.StaticWebAssets.Tests

diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/LegacyStaticWebAssetsV1IntegrationTest.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/LegacyStaticWebAssetsV1IntegrationTest.cs
@@ -4,9 +4,13 @@
 using Microsoft.AspNetCore.StaticWebAssets.Tasks;
 
 using Microsoft.NET.TestFramework;
+
 using Microsoft.NET.TestFramework.Commands;
+
 using Microsoft.NET.TestFramework.Assertions;
+
 using Microsoft.NET.TestFramework.Utilities;
+
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 
 namespace Microsoft.NET.Sdk.StaticWebAssets.Tests

diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/Microsoft.NET.Sdk.StaticWebAssets.Tests.csproj b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/Microsoft.NET.Sdk.StaticWebAssets.Tests.csproj
@@ -9,12 +9,15 @@
     <TargetFramework>$(SdkTargetFramework)</TargetFramework>
   </PropertyGroup>
 
-  <!-- These integration tests share on-disk test asset directories and NuGet caches across
-       test methods (for example via the BuildFrameworkAssetsConsumer helper), so they must run
-       sequentially. Under xUnit this was enforced by
-       [assembly: CollectionBehavior(DisableTestParallelization = true)]. Override the repo-wide
-       MethodLevel default (test/Directory.Build.props) so MSTest.Sdk emits [assembly: DoNotParallelize]. -->
   <PropertyGroup>
+    <!-- These tests were authored for xUnit with assembly-wide parallelization disabled
+         ([assembly: CollectionBehavior(DisableTestParallelization = true)]). They are not parallel-safe:
+         many integration tests in the same class share fixed test asset directories (e.g. helpers like
+         BuildFrameworkAssetsConsumer reuse the same [CallerMemberName]-derived path), and several task
+         tests mutate the process-global current directory via Directory.SetCurrentDirectory. Running any
+         of them concurrently causes file-in-use, file-already-exists, missing-metadata, and deleted-cwd
+         (GetCwd) races. Override the repo-wide MethodLevel default with None, which emits
+         [assembly: DoNotParallelize] to preserve the original fully-serialized semantics. -->
     <MSTestParallelizeScope>None</MSTestParallelizeScope>
   </PropertyGroup>
 

diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/ScopedCssIntegrationTests.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/ScopedCssIntegrationTests.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using System.Text.Json;
 using System.Text.RegularExpressions;
 using Microsoft.AspNetCore.StaticWebAssets.Tasks;

diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetEndpointsIntegrationTest.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetEndpointsIntegrationTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using System.Diagnostics.Eventing.Reader;
 using System.Globalization;
 using System.Text.Json;

diff --git a/...icrosoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/ApplyCompressionNegotiationTest.cs b/...icrosoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/ApplyCompressionNegotiationTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using System.Globalization;
 using System.Text.Json;
 using Microsoft.AspNetCore.StaticWebAssets.Tasks;
@@ -19,7 +18,6 @@
 namespace Microsoft.NET.Sdk.StaticWebAssets.Tests.StaticWebAssets;
 
 [TestClass]
-
 public class ApplyCompressionNegotiationTest
 {
     [TestMethod]

diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/ApplyCssScopesTest.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/ApplyCssScopesTest.cs
@@ -11,7 +11,6 @@
 using Moq;
 
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 namespace Microsoft.NET.Sdk.StaticWebAssets.Tests
 {
     [TestClass]

diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/AssetGroupFilteringTest.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/AssetGroupFilteringTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using Microsoft.Build.Framework;
 using Microsoft.Build.Utilities;
 using Moq;

diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/AssetToCompressTest.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/AssetToCompressTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using Microsoft.AspNetCore.StaticWebAssets.Tasks.Utils;
 using Microsoft.Build.Framework;
 using Microsoft.Build.Utilities;
@@ -17,7 +16,6 @@
 namespace Microsoft.NET.Sdk.StaticWebAssets.Tests;
 
 [TestClass]
-
 public class AssetToCompressTest : IDisposable
 {
     private readonly string _testDirectory;

diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/ComputeCssScopesTests.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/ComputeCssScopesTests.cs
@@ -10,7 +10,6 @@
 using Microsoft.Build.Utilities;
 
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 namespace Microsoft.NET.Sdk.Razor.Test
 {
     [TestClass]

diff --git a/...ts.Tests/StaticWebAssets/ComputeEndpointsForReferenceStaticWebAssetsMultiThreadingTest.cs b/...ts.Tests/StaticWebAssets/ComputeEndpointsForReferenceStaticWebAssetsMultiThreadingTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using Microsoft.AspNetCore.StaticWebAssets.Tasks;
 using Microsoft.Build.Framework;
 using Microsoft.Build.Utilities;
@@ -17,7 +16,6 @@
 namespace Microsoft.NET.Sdk.StaticWebAssets.Tests;
 
 [TestClass]
-
 public class ComputeEndpointsForReferenceStaticWebAssetsMultiThreadingTest
 {
     [TestMethod]

diff --git a/....StaticWebAssets.Tests/StaticWebAssets/ComputeEndpointsForReferenceStaticWebAssetsTest.cs b/....StaticWebAssets.Tests/StaticWebAssets/ComputeEndpointsForReferenceStaticWebAssetsTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using Microsoft.AspNetCore.StaticWebAssets.Tasks;
 using Microsoft.Build.Framework;
 using Microsoft.Build.Utilities;
@@ -17,7 +16,6 @@
 namespace Microsoft.NET.Sdk.StaticWebAssets.Tests;
 
 [TestClass]
-
 public class ComputeEndpointsForReferenceStaticWebAssetsTest
 {
     [TestMethod]

diff --git a/....NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/ComputeReferenceStaticWebAssetItemsTest.cs b/....NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/ComputeReferenceStaticWebAssetItemsTest.cs
@@ -1,7 +1,8 @@
-// Licensed to the .NET Foundation under one or more agreements.
+// Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
 #nullable disable
+
 using Microsoft.NET.TestFramework;
 using Microsoft.NET.TestFramework.Commands;
 using Microsoft.NET.TestFramework.Assertions;
@@ -13,6 +14,7 @@
 
 namespace Microsoft.NET.Sdk.StaticWebAssets.Tests
 {
+    [DoNotParallelize]
     [TestClass]
     public class ComputeReferenceStaticWebAssetItemsTest
     {

diff --git a/....Sdk.StaticWebAssets.Tests/StaticWebAssets/ComputeStaticWebAssetsForCurrentProjectTest.cs b/....Sdk.StaticWebAssets.Tests/StaticWebAssets/ComputeStaticWebAssetsForCurrentProjectTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using System.Text.Json;
 using Microsoft.AspNetCore.StaticWebAssets.Tasks;
 using Microsoft.Build.Framework;

diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/ConcatenateFilesTest.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/ConcatenateFilesTest.cs
@@ -10,7 +10,6 @@
 using Microsoft.Build.Utilities;
 
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 namespace Microsoft.NET.Sdk.Razor.Test
 {
     [TestClass]

diff --git a/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/ContentTypeProviderTests.cs b/test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/ContentTypeProviderTests.cs
@@ -11,11 +11,9 @@
 using Microsoft.Build.Utilities;
 
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 namespace Microsoft.NET.Sdk.StaticWebAssets.Tests.StaticWebAssets;
 
 [TestClass]
-
 public class ContentTypeProviderTests
 {
     private readonly TaskLoggingHelper _log = new TestTaskLoggingHelper();

diff --git a/...rosoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/DefineStaticWebAssetEndpointsTest.cs b/...rosoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssets/DefineStaticWebAssetEndpointsTest.cs
@@ -8,7 +8,6 @@
 using Microsoft.NET.TestFramework.Assertions;
 using Microsoft.NET.TestFramework.Utilities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-
 using System.Diagnostics.Metrics;
 using System.Diagnostics;
 using Microsoft.AspNetCore.StaticWebAssets.Tasks;
@@ -22,7 +21,6 @@
 namespace Microsoft.NET.Sdk.StaticWebAssets.Tests;
 
 [TestClass]
-
 public class DefineStaticWebAssetEndpointsTest
 {
     [TestMethod]