Add a test for timers in child isolates.

tests/html/async_test.dart

+library async_test;
+
+import '../../pkg/unittest/lib/unittest.dart';
+import '../../pkg/unittest/lib/html_config.dart';
+
+import 'dart:async';
+import 'dart:isolate';
+import 'dart:html';
+
+oneshotTimerIsolate() {
+  port.receive((msg, replyTo) {
+    expect(msg, 'START');
+    new Timer(const Duration(milliseconds: 10), () {
+      replyTo.send('DONE');
+    });
+  });
+}
+
+periodicTimerIsolate() {
+  port.receive((msg, replyTo) {
+    expect(msg, 'START');
+    int counter = 0;
+    new Timer.periodic(const Duration(milliseconds: 10), (timer) {
+      if (counter == 3) {
+        counter = 1024;
+        timer.cancel();
+        // Wait some more time to be sure callback won't be invoked any
+        // more.
+        new Timer(const Duration(milliseconds: 30), () {
+          replyTo.send('DONE');
+        });
+      }
+      assert(counter < 3);
+      counter++;
+    });
+  });
+}
+
+cancellingIsolate() {
+  port.receive((msg, replyTo) {
+    expect(msg, 'START');
+    final oneshot = new Timer(const Duration(milliseconds: 30), () {
+      fail('Should never be invoked');
+    });
+    bool shot = false;
+    var periodic;
+    periodic = new Timer.periodic(const Duration(milliseconds: 10), (timer) {
+      expect(shot, isFalse);
+      shot = true;
+      expect(timer, same(periodic));
+      periodic.cancel();
+      oneshot.cancel();
+      // Wait some more time to be sure callbacks won't be invoked any
+      // more.
+      new Timer(const Duration(milliseconds: 50), () {
+        replyTo.send('DONE');
+      });
+    });
+  });
+}
+
+main() {
+  useHtmlConfiguration();
+
+  test('one shot timer in pure isolate', () {
+    expect(spawnFunction(oneshotTimerIsolate).call('START'),
+           completion('DONE'));
+  });
+  test('periodic timer in pure isolate', () {
+    expect(spawnFunction(oneshotTimerIsolate).call('START'),

[vsm, 2013/04/01 15:27:32]

Looks like you lost this fix (should be periodicTimerIsolate) / changes on this
file.

[Anton Muhin, 2013/04/02 11:51:22]

Thank you, bad merge.

+           completion('DONE'));
+  });
+  test('cancellation in pure isolate', () {
+    expect(spawnFunction(cancellingIsolate).call('START'),
+           completion('DONE'));
+  });
+}