Fix CultureInfo tests on .NET Core

Author: xplicit

tests/ServiceStack.Text.Tests/CultureInfoTests.cs

@@ -1,4 +1,3 @@
-#if !NETCORE
 using System;
 using System.Globalization;
 using System.Threading;
@@ -17,16 +16,25 @@ public class CultureInfoTests
 		[TestFixtureSetUp]
 		public void TestFixtureSetUp()
 		{
+#if NETCORE
+			previousCulture = CultureInfo.CurrentCulture;
+			CultureInfo.CurrentCulture = new CultureInfo("fr-FR");
+#else
 			previousCulture = Thread.CurrentThread.CurrentCulture;
 			//Thread.CurrentThread.CurrentCulture = new CultureInfo("pt-BR");
 			Thread.CurrentThread.CurrentCulture = new CultureInfo("fr-FR");
 			Thread.CurrentThread.CurrentUICulture = new CultureInfo("fr-FR");
+#endif
 		}
 
 		[TestFixtureTearDown]
 		public void TestFixtureTearDown()
 		{
+#if NETCORE
+			CultureInfo.CurrentCulture = previousCulture;
+#else
 			Thread.CurrentThread.CurrentCulture = previousCulture;
+#endif
 		}
 
 		[Test]
@@ -103,4 +111,3 @@ public void Does_use_invariant_culture_for_numbers()
 
 	}
 }
-#endif