Support configuring timeouts per-test and -group.

test/backend/declarer_test.dart

 // Copyright (c) 2015, 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 'package:test/src/backend/declarer.dart';
 import 'package:test/src/backend/suite.dart';
+import 'package:test/src/frontend/timeout.dart';
 import 'package:test/test.dart';
 
 Declarer _declarer;
 Suite _suite;
 
 void main() {
   setUp(() {
     _declarer = new Declarer();
     _suite = new Suite([]);
   });
@@ skipping 104 matching lines @@
   group("in a group,", () {
     test("tests inherit the group's description", () {
       _declarer.group("group", () {
         _declarer.test("description", () {});
       });
 
       expect(_declarer.tests, hasLength(1));
       expect(_declarer.tests.single.name, "group description");
     });
 
+    test("a test's timeout factor is applied to the group's", () {
+      _declarer.group("group", () {
+        _declarer.test("test", () {},
+            timeout: new Timeout.factor(3));
+      }, timeout: new Timeout.factor(2));
+
+      expect(_declarer.tests, hasLength(1));
+      expect(_declarer.tests.single.metadata.timeout.scaleFactor, equals(6));
+    });
+
+    test("a test's timeout factor is applied to the group's duration", () {
+      _declarer.group("group", () {
+        _declarer.test("test", () {},
+            timeout: new Timeout.factor(2));
+      }, timeout: new Timeout(new Duration(seconds: 10)));
+
+      expect(_declarer.tests, hasLength(1));
+      expect(_declarer.tests.single.metadata.timeout.duration,
+          equals(new Duration(seconds: 20)));
+    });
+
+    test("a test's timeout duration is applied over the group's", () {
+      _declarer.group("group", () {
+        _declarer.test("test", () {},
+            timeout: new Timeout(new Duration(seconds: 15)));
+      }, timeout: new Timeout(new Duration(seconds: 10)));
+
+      expect(_declarer.tests, hasLength(1));
+      expect(_declarer.tests.single.metadata.timeout.duration,
+          equals(new Duration(seconds: 15)));
+    });
+
     group(".setUp()", () {
       test("is scoped to the group", () {
         var setUpRun = false;
         _declarer.group("group", () {
           _declarer.setUp(() => setUpRun = true);
 
           _declarer.test("description 1", expectAsync(() {
             expect(setUpRun, isTrue);
             setUpRun = false;
           }, max: 1));
@@ skipping 174 matching lines @@
 /// Runs the test at [index] defined on [_declarer].
 ///
 /// This automatically sets up an `onError` listener to ensure that the test
 /// doesn't throw any invisible exceptions.
 Future _runTest(int index) {
   var liveTest = _declarer.tests[index].load(_suite);
   liveTest.onError.listen(expectAsync((_) {},
       count: 0, reason: "No errors expected for test #$index."));
   return liveTest.run();
 }