Merge pull request #736 from AvaloniaUI/dont-run-interactivity-tests-in-paralell

Don't run interactivity tests in parallel.

tests/Avalonia.Interactivity.UnitTests/Properties/AssemblyInfo.cs

@@ -2,5 +2,9 @@
 // Licensed under the MIT license. See licence.md file in the project root for full license information.
 
 using System.Reflection;
+using Xunit;
 
 [assembly: AssemblyTitle("Avalonia.Interactive.UnitTests")]
+
+// Don't run tests in parallel.
+[assembly: CollectionBehavior(DisableTestParallelization = true)]