How to test Menu

Question

I need to cover Menu functionality by unit tests, however I'm struggling to obtain Menu object.

Following test case fails (mMenu is null):

sendKeys(KeyEvent.KEYCODE_MENU);
mMenu = (Menu) mActivity.findViewById(com.###.###.R.id.main_menu);
assertNotNull(mMenu);

Please advice. Thank you.

Answer 1

I ran into this same scenario and came up with the following (very simple) solution in my implementation of ActivityInstrumentationTestCase:

...
ActivityMonitor am = getInstrumentation().addMonitor(LoginActivity.class.getName(), null, false);

// Click the menu option
getInstrumentation().sendKeyDownUpSync(KeyEvent.KEYCODE_MENU);
getInstrumentation().invokeMenuActionSync(mActivity, R.id.logout, 0);

Activity a = getInstrumentation().waitForMonitorWithTimeout(am, 1000);
assertEquals(true, getInstrumentation().checkMonitorHit(am, 1));
a.finish();
...

This snippet of code does three things:

1. Clicks the menu option,
2. Ensures we go to the appropriate activity after the menu option is clicked, and
3. finishes the activity that was started (very important for the tests following this one).

I hope this helps.

Answer 2

What exactly are you trying to test? That menu items do the correct action?

You can call Activity.openOptionsMenu() to open the menu and get a reference to the menu by overriding one of the onMenu methods. At that point you can use Menu.performIdentifierAction to select menu items.