Merge pull request #2752 from sharwell/sequential-pool-testing

Avoid running object pool tests in parallel with other tests

Author: vweijsters

StyleCop.Analyzers/StyleCop.Analyzers.Test/HelperTests/ObjectPools/ObjectPoolTests.cs

@@ -7,6 +7,7 @@ namespace StyleCop.Analyzers.Test.HelperTests.ObjectPools
     using StyleCop.Analyzers.Helpers.ObjectPools;
     using Xunit;
 
+    [Collection(nameof(SequentialTestCollection))]
     public class ObjectPoolTests
     {
         [Fact]

StyleCop.Analyzers/StyleCop.Analyzers.Test/HelperTests/ObjectPools/SharedPoolsTests.cs

@@ -10,6 +10,7 @@ namespace StyleCop.Analyzers.Test.HelperTests.ObjectPools
     using StyleCop.Analyzers.Helpers.ObjectPools;
     using Xunit;
 
+    [Collection(nameof(SequentialTestCollection))]
     public class SharedPoolsTests
     {
         [Fact]

StyleCop.Analyzers/StyleCop.Analyzers.Test/SequentialTestCollection.cs

@@ -0,0 +1,15 @@
+// Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved.
+// Licensed under the Apache License, Version 2.0. See LICENSE in the project root for license information.
+
+namespace StyleCop.Analyzers.Test
+{
+    using Xunit;
+
+    /// <summary>
+    /// Defines a collection for tests which cannot run in parallel with other tests.
+    /// </summary>
+    [CollectionDefinition(nameof(SequentialTestCollection), DisableParallelization = true)]
+    internal sealed class SequentialTestCollection
+    {
+    }
+}