Remove isolation code for netfx. Causes two loads of Java.

src/IKVM.JTReg.TestAdapter.Core/JTRegTestManager.cs

@@ -18,6 +18,8 @@ namespace IKVM.JTReg.TestAdapter.Core
     public class JTRegTestManager
     {
 
+        public static readonly JTRegTestManager Instance = new();
+
         public const string URI = "executor://ikvmjtregtestadapter/v1";
 
         internal static readonly string JTREG_LIB = Path.Combine(Path.GetDirectoryName(typeof(JTRegTestManager).Assembly.Location), "jtreg");

src/IKVM.JTReg.TestAdapter.Tests/JTRegTestAdapterTests.cs

@@ -7,8 +7,6 @@
 
 using IKVM.JTReg.TestAdapter.Core;
 
-using javax.xml.bind;
-
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 
 using Moq;

src/IKVM.JTReg.TestAdapter/JTRegExecutionContextProxy.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
 
 using IKVM.JTReg.TestAdapter.Core;
 
@@ -13,11 +12,7 @@ namespace IKVM.JTReg.TestAdapter
     /// <summary>
     /// Proxies the <see cref="IJTRegExecutionContext"/> interface to the Visual Studio test adapter.
     /// </summary>
-    class JTRegExecutionContextProxy :
-#if NETFRAMEWORK
-        MarshalByRefObject,
-#endif
-        IJTRegExecutionContext
+    class JTRegExecutionContextProxy : IJTRegExecutionContext
     {
 
         static readonly Dictionary<string, TestProperty> properties = new Dictionary<string, TestProperty>(StringComparer.OrdinalIgnoreCase);
@@ -101,15 +96,6 @@ public void SendMessage(JTRegTestMessageLevel level, string message)
             frameworkHandle.SendMessage(JTRegProxyUtil.Convert(level), message);
         }
 
-#if NETFRAMEWORK
-
-        public override object InitializeLifetimeService()
-        {
-            return null;
-        }
-
-#endif
-
     }
 
 }

src/IKVM.JTReg.TestAdapter/JTRegTestDiscoverer.cs

@@ -27,9 +27,7 @@ public void DiscoverTests(IEnumerable<string> sources, IDiscoveryContext discove
 
                 try
                 {
-                    // setup isolation host for source
-                    var proxy = JTRegTestIsolationHost.Instance.CreateManager();
-                    proxy.DiscoverTests(source, new JTRegDiscoveryContextProxy(discoveryContext, logger, discoverySink), new CancellationTokenProxy(CancellationToken.None));
+                    JTRegTestManager.Instance.DiscoverTests(source, new JTRegDiscoveryContextProxy(discoveryContext, logger, discoverySink), CancellationToken.None);
                 }
                 catch (Exception e)
                 {

src/IKVM.JTReg.TestAdapter/JTRegTestExecutor.cs

@@ -28,15 +28,13 @@ public class JTRegTestExecutor : ITestExecutor
         public void RunTests(IEnumerable<TestCase> tests, IRunContext runContext, IFrameworkHandle frameworkHandle)
         {
             cts = new CancellationTokenSource();
-            var ctp = new CancellationTokenProxy(cts.Token);
 
             foreach (var group in tests.GroupBy(i => i.Source))
             {
                 if (cts.Token.IsCancellationRequested)
                     break;
 
-                var proxy = JTRegTestIsolationHost.Instance.CreateManager();
-                proxy.RunTests(group.Key, JTRegProxyUtil.Convert(group).ToList(), new JTRegExecutionContextProxy(runContext, frameworkHandle), ctp);
+                JTRegTestManager.Instance.RunTests(group.Key, JTRegProxyUtil.Convert(group).ToList(), new JTRegExecutionContextProxy(runContext, frameworkHandle), cts.Token);
             }
         }
 
@@ -49,15 +47,13 @@ public void RunTests(IEnumerable<TestCase> tests, IRunContext runContext, IFrame
         public void RunTests(IEnumerable<string> sources, IRunContext runContext, IFrameworkHandle frameworkHandle)
         {
             cts = new CancellationTokenSource();
-            var ctp = new CancellationTokenProxy(cts.Token);
 
             foreach (var source in sources)
             {
                 if (cts.Token.IsCancellationRequested)
                     break;
 
-                var proxy = JTRegTestIsolationHost.Instance.CreateManager();
-                proxy.RunTests(source, new JTRegExecutionContextProxy(runContext, frameworkHandle), ctp);
+                JTRegTestManager.Instance.RunTests(source, null, new JTRegExecutionContextProxy(runContext, frameworkHandle), cts.Token);
             }
         }
 
@@ -68,6 +64,7 @@ public void Cancel()
         {
             cts?.Cancel();
         }
+
     }
 
 }