Testing non-default App Engine task queues

Question

App Engine documentation gives an example of unit testing task queues, which works fine for the \"default\" queue, but I need a unit test for non-default queues.

I\'

Answer 1

When using the gradle plugin, make sure to include:

testCompile 'com.google.appengine:appengine-tools-sdk:1.9.9'

Answer 2

Yes, you configure it just like the other unit test harness classes and pass it the path to your test queue.xml, mine happens to be in /src/test/resources (the usual place for a maven project)

Here's a snippet from my base junit test class...

static {
    dir = System.getProperty("user.dir") + "/src/test/resources/queue.xml";

}
private final LocalServiceTestHelper helper = new LocalServiceTestHelper(
        new LocalDatastoreServiceTestConfig(),
        new LocalTaskQueueTestConfig().setQueueXmlPath(dir));

And then you can do things like (and sorry if this is out of context, but it should give you the idea.. and it's groovy so it might look odd)

//do something that might trigger a queue to run...
    NotificationService.getInstance().doNotification(interaction)

    LocalTaskQueue taskQueue = LocalTaskQueueTestConfig.getLocalTaskQueue()
    Map allQueues = taskQueue.getQueueStateInfo()
    QueueStateInfo mailQueue = allQueues.get(EmailTaskQueue.MAIL_QUEUE)
    assert mailQueue.getCountTasks() == 1

More details on Rick Mangi's comment. If you get an error like:

 java.lang.NoClassDefFoundError: org/mortbay/xml/XmlParser

add this to your pom.xml:

<dependency>
  <groupId>com.google.appengine</groupId>
  <artifactId>appengine-tools-sdk</artifactId>
  <version>${gae.version}</version>
</dependency>