Reapply "Zone support for Futures, Timer, Streams."

tests/lib/async/catch_errors7_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';
+import 'catch_errors.dart';
+
+main() {
+  // 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 = [];
+  // Test that asynchronous errors are caught.
+  catchErrors(() {
+    events.add("catch error entry");
+    new Future.error("future error");
+    new Future.error("future error2");
+    new Future.value(499).then((x) => throw x);
+    throw "catch error";
+  }).listen((x) {
+      events.add(x);
+    },
+    onDone: () {
+      Expect.listEquals(
+          ["catch error entry",
+           "main exit",
+           "catch error",
+           "future error",
+           "future error2",
+           499,
+          ],
+          events);
+      port.close();
+    });
+  events.add("main exit");
+}