|  | // Copyright (c) 2017, 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:expect/async_helper.dart"; | 
|  | import "package:expect/expect.dart"; | 
|  |  | 
|  | var result = ""; | 
|  |  | 
|  | foo() { | 
|  | result += "foo"; | 
|  | } | 
|  |  | 
|  | bar() async { | 
|  | result += "bar"; | 
|  | await null; | 
|  | result += "bar2"; | 
|  | } | 
|  |  | 
|  | main() { | 
|  | asyncStart(); | 
|  | () async { | 
|  | var f = new Future(foo); | 
|  | var b = bar(); | 
|  | Expect.equals("bar", result); | 
|  | scheduleMicrotask(() => result += "micro"); | 
|  | await b; | 
|  | await f; | 
|  |  | 
|  | // Validates that bar is scheduled as a microtask, before foo. | 
|  | Expect.equals("barbar2microfoo", result); | 
|  | asyncEnd(); | 
|  | }(); | 
|  | } |