[英]Dart Event Queue: How to debug event queue?
I'm writing some integration tests which utilize an HttpServer
, a bunch of Directory().watch()
'ers and possibly some other future/stream listening code. 我正在编写一些集成测试,它们使用
HttpServer
,一堆Directory().watch()
',以及可能的其他未来/流监听代码。
I'm using the following test configuration: 我正在使用以下测试配置:
class LaserServerTestConfiguration extends SimpleConfiguration {
LaserServer _server;
LaserServerTestConfiguration(this._server);
void onDone(bool success) {
super.onDone(success);
_server.stop();
}
}
And my tests look like this: 我的测试看起来像这样:
main() {
var conf = new LaserConfiguration.fromPath('test/test_config.yaml');
var server = new LaserServer(conf);
unittestConfiguration = new LaserServerTestConfiguration(server);
server.start().then((_) {
test('test file changed event', () {
var response = new Completer<Map>();
response.future.then(expectAsync((e) =>
expect(e, containsValue('test/sample/sample_test.html'))
));
WebSocket.connect("ws://localhost:2014").then((ws) {
ws.listen((msg) {
response.complete(JSON.decode(msg));
ws.close();
});
new File('test/sample/sample.dart').writeAsString("");
});
});
});
}
The problem I have is that after the tests run (and pass) the Dart VM does not exit. 我遇到的问题是,在测试运行(并通过)后,Dart VM不会退出。 Presumably because I still have something pending in the event queue.
大概是因为我在事件队列中仍有待处理的事情。
How do I debug the event queue? 如何调试事件队列? I would like to see what is preventing the Dart VM from exiting at the end of the test run.
我想看看是什么阻止了Dart VM在测试运行结束时退出。
You can see in the custom TestConfiguration that I overload onDone(), this gets called and I stop() my server ( .close(force: true)
on HttpServer and loop all of my Directory().watch()
'ers and cancel the subscriptions). 您可以在自定义TestConfiguration中看到我重载onDone(),这被调用,我在HttpServer上停止()我的服务器(
.close(force: true)
并循环我的所有Directory().watch()
'ers并取消订阅)。 But something is still hanging around... 但仍有一些问题仍然存在......
现在的天文台(Dart VM版本:1.11.0-edge.131775)允许在调试器视图中调查消息队列。
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