@Test(expected = IllegalStateException.class)
 public void sendMessageWhileNotRunning() {
   Assert.assertFalse(module.isActive());
   module.sendMessage(testMessage);
 }
 @Test
 public void sendMessageWhileRunning() {
   module.init(app);
   module.sendMessage(testMessage);
   Assert.assertTrue(module.methodCalled);
 }
 @Test(expected = IllegalArgumentException.class)
 public void sendNullMessage() {
   module.sendMessage(null);
 }