is a LocalBroadcastManager possible in Robolectric?

[Eric Harlow]

Hello I am a complete beginner with Robolectric. 

Does anyone have some experience with LocalBroadcastManager in Robolectric? is it even possible?

my application code looks like this:

public class MyApplication extends Application {

    @Override

    public void onCreate() {

        Dispatcher instance = Dispatcher.getInstance();

        instance.setContext(getApplicationContext());

    IntentFilter filter = Dispatcher.getIntentFilter();

        LocalBroadcastManager messagePassingSystem = LocalBroadcastManager.getInstance(getApplicationContext());

    messagePassingSystem.registerReceiver(instance, filter);

     }

}

I know that getApplicationContext() is returning an object, and LocalBroadcastManager is returning null. 

How can I get a LocalBroadcastManger in robolectric?

my failure trace:

java.lang.NullPointerException

at com.myCompany.MyApplication.onCreate(MyApplication.java:94)

at com.xtremelabs.robolectric.RobolectricTestRunner.setupApplicationState(RobolectricTestRunner.java:234)

at com.xtremelabs.robolectric.RobolectricTestRunner.internalBeforeTest(RobolectricTestRunner.java:177)

at com.xtremelabs.robolectric.RobolectricTestRunner.methodBlock(RobolectricTestRunner.java:157)

at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)

at org.junit.runners.ParentRunner.run(ParentRunner.java:236)

at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)

at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

[Phil Goodwin]

Which version of Robolectric are you using? The internals of RobolectricTestRunner have been changing a lot recently, so you may find that your code just works with the latest version. 

The stack trace shows that the application's onCreate() is being called from setupApplicationState() which is very early in the test runner setup. It's possible that it's happening before the shadow classes have been registered. If that's what's happening then it's a bug and we should fix it. Please keep us posted.

Thanks,

Phil

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