Split apart several asynchronous tests to reduce timeouts.

pkg/scheduled_test/test/scheduled_test/signal_error_test.dart

Index: pkg/scheduled_test/test/scheduled_test/signal_error_test.dart
diff --git a/pkg/scheduled_test/test/scheduled_test/signal_error_test.dart b/pkg/scheduled_test/test/scheduled_test/signal_error_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..07cb576dbad1e78160c7688bc57558abf612781a
--- /dev/null
+++ b/pkg/scheduled_test/test/scheduled_test/signal_error_test.dart
@@ -0,0 +1,48 @@
+// 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 'dart:async';
+import 'dart:io';
+
+import 'package:scheduled_test/scheduled_test.dart';
+import 'package:scheduled_test/src/mock_clock.dart' as mock_clock;
+
+import '../metatest.dart';
+import '../utils.dart';
+
+void main() {
+  setUpTimeout();
+
+  expectTestsFail('an out-of-band error reported via signalError is '
+      'handled', () {
+    mock_clock.mock().run();
+    test('test', () {
+      schedule(() {
+        sleep(1).then((_) => currentSchedule.signalError('bad'));
+      });
+      schedule(() => sleep(2));
+    });
+  });
+
+  expectTestsFail('an out-of-band error reported via signalError that finished '
+      'after the schedule is handled', () {
+    mock_clock.mock().run();
+    test('test', () {
+      schedule(() {
+        var done = wrapAsync((_) {});
+        sleep(2).then((_) {
+          currentSchedule.signalError('bad');
+          done(null);
+        });
+      });
+      schedule(() => sleep(1));
+    });
+  });
+
+  expectTestsFail('a synchronous error reported via signalError is handled', () {
+    test('test', () {
+      currentSchedule.signalError('bad');
+    });
+  });
+}