Fix StringWriterTests (#26510)

Author: danmoseley

src/System.IO/tests/StringWriter/StringWriterTests.cs

@@ -4,14 +4,15 @@
 
 using Xunit;
 using System;
+using System.Diagnostics;
 using System.Globalization;
 using System.IO;
 using System.Text;
 using System.Threading.Tasks;
 
 namespace System.IO.Tests
 {
-    public partial class StringWriterTests
+    public partial class StringWriterTests : RemoteExecutorTestBase
     {
         static int[] iArrInvalidValues = new int[] { -1, -2, -100, -1000, -10000, -100000, -1000000, -10000000, -100000000, -1000000000, int.MinValue, short.MinValue };
         static int[] iArrLargeValues = new int[] { int.MaxValue, int.MaxValue - 1, int.MaxValue / 2, int.MaxValue / 10, int.MaxValue / 100 };
@@ -291,10 +292,9 @@ public static void GetEncoding()
         [Fact]
         public static void TestWriteMisc()
         {
-            CultureInfo old = CultureInfo.CurrentCulture;
-            CultureInfo.CurrentCulture = new CultureInfo("en-US"); // floating-point formatting comparison depends on culture
-            try
+            RemoteInvoke(() => 
             {
+                CultureInfo.CurrentCulture = new CultureInfo("en-US"); // floating-point formatting comparison depends on culture
                 var sw = new StringWriter();
 
                 sw.Write(true);
@@ -308,11 +308,7 @@ public static void TestWriteMisc()
                 sw.Write((ulong)ulong.MaxValue);
 
                 Assert.Equal("Truea1234.013452342.0123456-92233720368547758081234.5429496729518446744073709551615", sw.ToString());
-            }
-            finally
-            {
-                CultureInfo.CurrentCulture = old;
-            }
+            });
         }
 
         [Fact]
@@ -326,10 +322,9 @@ public static void TestWriteObject()
         [Fact]
         public static void TestWriteLineMisc()
         {
-            CultureInfo old = CultureInfo.CurrentCulture;
-            CultureInfo.CurrentCulture = new CultureInfo("en-US"); // floating-point formatting comparison depends on culture
-            try
+            RemoteInvoke(() =>
             {
+                CultureInfo.CurrentCulture = new CultureInfo("en-US"); // floating-point formatting comparison depends on culture
                 var sw = new StringWriter();
                 sw.WriteLine((bool)false);
                 sw.WriteLine((char)'B');
@@ -342,11 +337,7 @@ public static void TestWriteLineMisc()
                 Assert.Equal(
                     string.Format("False{0}B{0}987{0}875634{0}1.23457{0}45634563{0}18446744073709551615{0}", Environment.NewLine),
                     sw.ToString());
-            }
-            finally
-            {
-                CultureInfo.CurrentCulture = old;
-            }
+            });
         }
 
         [Fact]

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

@@ -77,6 +77,12 @@
     <Compile Include="TextWriter\TextWriterTests.cs" />
     <Compile Include="TextWriter\TextWriterTests.netcoreapp.cs" Condition="'$(TargetGroup)' == 'netcoreapp'" />
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="$(CommonTestPath)\System\Diagnostics\RemoteExecutorConsoleApp\RemoteExecutorConsoleApp.csproj">
+      <Project>{69e46a6f-9966-45a5-8945-2559fe337827}</Project>
+      <Name>RemoteExecutorConsoleApp</Name>
+    </ProjectReference>
+  </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="Resources\$(AssemblyName).rd.xml" />
   </ItemGroup>