Flex，Flexunit：如何测试事件发送两次？ [英] Flex, Flexunit: How to test that an event is dispatched twice?

问题描述

我正在Flex应用程序中测试一些事件调度代码，使用FlexUnit的 addAsync 方法来测试事件的发送。到目前为止，我可以确保至少有一个事件被解雇。但是，我想要更详细一些;我想确保我正在发送的事件集。有没有一个有用的测试模式（或甚至不同的测试框架 - 我很灵活）来完成这个？

我尝试过这个代码， t似乎被第二次调用：

  protected function expectResultPropertyChange（event：Event，numberOfEvents：int = 1）：void { 
 trace（Got event+ event +on+ event.target +with+ numberOfEvents +traces left ...）; 
 assertTrue（event.type == ResponseChangedEvent.RESPONSE_CHANGED）; 
 if（numberOfEvents> 1）{
 event.target.addEventListener（ResponseChangedEvent.RESPONSE_CHANGED，addAsync（expectResultPropertyChange，1000，numberOfEvents  -  1））; 
} 
} 
 
 public function testSomething（）：void {
 requiredQuestion.addEventListener（ResponseChangedEvent.RESPONSE_CHANGED，addAsync（expectResultPropertyChange，1000,2））; 
 requiredQuestion.responseSelected（1，true）; 
 requiredQuestion.responseSelected（2，true）; 
} 
  

解决方案

回应评论。 ..

如果事件直接发送
怎么办？ responseSelected不
触发
复合对象上的异步事件，它直接发送
RESPONSE_CHANGED事件本身
。我没有看到这个
的方法可以使用你的
方法来嘲笑。记住你，我对
模拟测试实践是模糊的，所以我是
可能在这里缺少一个简单的解决方案
。

..在这种情况下，您不需要使用模拟或addAsync。这样做可以做到：

  public function testSomething（）：void 
 {
 var requiredQuestion：RequiredQuestion = new RequiredQuestion（）; 
 
 var callCount：int = 0; 
 requiredQuestion.addEventListener（ResponseChangedEvent.RESPONSE_CHANGED，function（event：ResponseChangedEvent）
 {
 callCount ++; 
}）; 
 
 requiredQuestion.responseSelected（1，true）; 
 requiredQuestion.responseSelected（2，true）; 
 
 assertEquals（2，callCount）; 
} 
  

I'm testing some event dispatch code in a Flex app, using FlexUnit's addAsync method for testing that events are dispatched. Great so far, I can ensure that at least one event was fired. However, I want to be a bit more detailed; I want to ensure that exactly the set of events I'm expecting are dispatched. Is there a useful test pattern (or, even, different test framework -- I'm flexible!) to accomplish this?

I tried this code, but it doesn't seem to get invoked the second time:

protected function expectResultPropertyChange(event: Event, numberOfEvents: int = 1): void {
    trace("Got event " + event + " on " + event.target + " with " + numberOfEvents + " traces left...");
    assertTrue(event.type == ResponseChangedEvent.RESPONSE_CHANGED);
    if (numberOfEvents > 1) {
        event.target.addEventListener(ResponseChangedEvent.RESPONSE_CHANGED, addAsync(expectResultPropertyChange, 1000, numberOfEvents - 1));
    }
}

public function testSomething(): void {
    requiredQuestion.addEventListener(ResponseChangedEvent.RESPONSE_CHANGED, addAsync(expectResultPropertyChange, 1000, 2));
    requiredQuestion.responseSelected("1", true);
    requiredQuestion.responseSelected("2", true);
}

解决方案

In response to the comment...

What if the event is dispatched directly? responseSelected doesn't trigger an asynchronous event on a composite object, it simply dispatched the RESPONSE_CHANGED event itself directly. I'm not seeing how this approach can be mocked using your method. Mind you, I'm fuzzy on the mock testing practice as-is, so I'm probably missing a simple solution here.

..in that case you don't need to use a mock or addAsync. Something like this will do:

public function testSomething(): void 
{
    var requiredQuestion : RequiredQuestion = new RequiredQuestion();

    var callCount : int = 0;
    requiredQuestion.addEventListener(ResponseChangedEvent.RESPONSE_CHANGED, function(event : ResponseChangedEvent)
    {
        callCount++;
    });

    requiredQuestion.responseSelected("1", true);
    requiredQuestion.responseSelected("2", true);

    assertEquals(2, callCount);
}

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