Merge pull request #2829 from stephentoub/fix_pipe_impersonation_test

Fix System.IO.Pipes test on 64-bit

Author: stephentoub

src/System.IO.Pipes/tests/NamedPipeTests/NamedPipeTest.Specific.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
 using System.Runtime.InteropServices;
+using System.Security.Principal;
 using System.Threading;
 using System.Threading.Tasks;
 using Xunit;
@@ -89,7 +90,7 @@ public void Windows_MessagePipeTransissionMode()
 
             using (NamedPipeServerStream server = new NamedPipeServerStream(pipeName, PipeDirection.InOut, 1, PipeTransmissionMode.Message))
             {
-                using (NamedPipeClientStream client = new NamedPipeClientStream(".", pipeName, PipeDirection.InOut, PipeOptions.None, Security.Principal.TokenImpersonationLevel.Identification))
+                using (NamedPipeClientStream client = new NamedPipeClientStream(".", pipeName, PipeDirection.InOut, PipeOptions.None, TokenImpersonationLevel.Impersonation))
                 {
                     server.ReadMode = PipeTransmissionMode.Message;
                     Assert.Equal(PipeTransmissionMode.Message, server.ReadMode);

src/System.IO.Pipes/tests/System.IO.Pipes.Tests.csproj

@@ -11,8 +11,6 @@
     <ProjectGuid>{142469EC-D665-4FE2-845A-FDA69F9CC557}</ProjectGuid>
     <NuGetPackageImportStamp>d2615b94</NuGetPackageImportStamp>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <!-- Temporary workaround until tests are fixed on x64 -->
-    <TestArchitecture>x86</TestArchitecture>
   </PropertyGroup>
   <!-- Default configurations to help VS understand the configurations -->
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">