SendPort + ReceivePort changes:

tests/isolate/src/TestFramework.dart

Index: tests/isolate/src/TestFramework.dart
diff --git a/tests/isolate/src/TestFramework.dart b/tests/isolate/src/TestFramework.dart
index 7879776cd76a33b6af863bc3ad5c1b32520eb268..342d54e5e04e2369a4396e84b9353f0963be6213 100644
--- a/tests/isolate/src/TestFramework.dart
+++ b/tests/isolate/src/TestFramework.dart
@@ -248,10 +248,12 @@ class AsynchronousTestCase extends TestCase {
 
   void addRunning(TestResult result) {
     if (running++ == 0) {
-      keepalive = new ReceivePort.singleShot();
-      keepalive.receive((message, replyTo) {
+      final port = new ReceivePort();

[eub, 2012/03/09 18:33:10]

I'm missing why the port vs. keepalive distinction here.

[Siggi Cherem (dart-lang), 2012/03/10 03:10:00]

It happens that keepalive is a field that gets assigned to null before we can
close it (line 263). We just needed a local copy that is still accesible in the
callback of [receive]

+      port.receive((message, replyTo) {
+        port.close();
         result.runner.done(result);
       });
+      keepalive = port;
     }
   }