unit-testing - DART-ExpectAsync不适用于httpRequest

我正在尝试测试httpRequest返回后是否发生异步调用。

这是我的代码:

...
   var httpRequest = new HttpRequest();
   httpRequest.withCredentials = true;
   httpRequest.open('POST', repositoryURL);
   httpRequest.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
   httpRequest.setRequestHeader("Authorization", auth);
   test('Asynch testing of getting Repositories', (){
     var callback =  expectAsync(() {repositoryListComplete(httpRequest);});
     httpRequest.onLoadEnd.listen((ee) => callback);
     httpRequest.onError.listen((ee) => handleError(ee));
     httpRequest.send('');
   });
}

void repositoryListComplete(HttpRequest request){
    print('Testing URL connection for ${repositoryURL}');
...

测试停止，并且似乎从未调用过回调。

如果我只是使用repositoryListComplete作为onLoadEnd的回调，则可以毫无问题地调用它。

我在这里找到了类似的错误报告:

https://code.google.com/p/dart/issues/detail?id=16677

我只是想知道我是否遇到相同的问题或我的代码不正确？

编辑:-我将代码更改为

   httpRequest.onLoadEnd.listen((ee) => callback());

现在我得到这个:

FAIL
1   PASS    Expectation: Checking if all UI components are present.
2   FAIL    Expectation: Asynch testing of getting Repositories. Caught Bad state: Not allowed when tests are running.
package:unittest/unittest.dart 268:21               test
documentviewertest.dart 275:9                       repositoryListComplete
documentviewertest.dart 261:60                      sendRepositoryListRequest.<fn>.<fn>
package:unittest/src/spread_args_helper.dart 94:23  invoke0
documentviewertest.dart 262:51                      sendRepositoryListRequest.<fn>.<fn>
dart:async                                          _BaseZone.bindUnaryCallback.<fn>
Total 1 passed, 1 failed 0 errors

我正在repositoryListComplete中调用另一个测试，但这有关系吗？

在包装的方法返回之前，是否期望ExpectAsync运行？

最佳答案

您需要致电callback

httpRequest.onLoadEnd.listen((ee) => callback());  // callback() instead of callback

callback仅返回闭包引用。

关于unit-testing - DART-ExpectAsync不适用于httpRequest，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/22562222/