Add zone support to streams.

tests/lib/async/catch_errors17_test.dart

+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import "package:expect/expect.dart";
+import 'dart:async';
+import 'dart:isolate';
+
+main() {
+  // We keep a ReceivePort open until all tests are done. This way the VM will
+  // time out if the callbacks are not invoked.

[Lasse Reichstein Nielsen, 2013/05/29 08:32:26]

will be timed out

[floitsch, 2013/05/29 15:48:56]

Changed for all tests to:
  // We keep a ReceivePort open until all tests are done. This way the VM will
  // hang if the callbacks are not invoked and the test will time out.

+  var port = new ReceivePort();
+  var events = [];
+  StreamController controller;
+  // Test that errors do not cross zone boundaries.
+  catchErrors(() {
+    catchErrors(() {
+      controller = new StreamController();
+      controller.stream
+        .map((x) {
+          events.add("map $x");
+          return x + 100;
+        })
+        .transform(new StreamTransformer(
+            handleError: (e, sink) => sink.add("error $e")))
+        .listen((x) { events.add("stream $x"); });
+    }).listen((x) { events.add(x); })
+      .asFuture().then((_) { events.add("inner done"); });
+    controller.add(1);
+    // Errors are not allowed to traverse boundaries. This error should be
+    // caught by the outer catchErrors.
+    controller.addError(2);
+    controller.close();
+  }).listen((x) { events.add("outer: $x"); },
+            onDone: () {
+      Expect.listEquals([

[Lasse Reichstein Nielsen, 2013/05/29 08:32:26]

Indent to 2 beyond start of onDone.
Space between [ and ".

[floitsch, 2013/05/29 15:48:56]

Done.

+                         "map 1",
+                         "stream 101",
+                         "inner done",
+                         "outer: 2",
+                         ],
+                         events);
+      port.close();
+    });
+}