Add test

dotnet · Jul 7, 2021 · 0e0ade5 · 0e0ade5
1 parent f012e49
commit 0e0ade5
Showing 1 changed file with 20 additions and 0 deletions.
diff --git a/src/libraries/System.Runtime/tests/System/Text/EncodingTests.cs b/src/libraries/System.Runtime/tests/System/Text/EncodingTests.cs
@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using Microsoft.DotNet.RemoteExecutor;
 using Moq;
 using Xunit;
 
@@ -106,6 +107,25 @@ public void GetEncodings_FromProvider_DoesNotContainDisallowedEncodings(string e
             });
         }
 
+        [ConditionalFact(typeof(RemoteExecutor), nameof(RemoteExecutor.IsSupported))]
+        public void RegisterProvider_EncodingsAreUsable()
+        {
+            RemoteExecutor.Invoke(() =>
+            {
+                for (int i = 0; i < 10; i++)
+                {
+                    Encoding.RegisterProvider(new NullEncodingProvider());
+                    Assert.Same(Encoding.UTF8, Encoding.GetEncoding(65001));
+                }
+            }).Dispose();
+        }
+
+        private sealed class NullEncodingProvider : EncodingProvider
+        {
+            public override Encoding GetEncoding(int codepage) => null;
+            public override Encoding GetEncoding(string name) => null;
+        }
+
         private sealed class ThreadStaticEncodingProvider : EncodingProvider
         {
             private static readonly object _globalRegistrationLockObj = new object();