I want to start with a consistent test environment so I need to reset/clear my preferences. Here's the SetUp for test I have so far. It's not reporting any errors, and my tests pass, but the preferences are not being cleared.
I'm testing the "MainMenu" activity, but I temporarily switch to the OptionScreen activity (which extends Android's PreferenceActivity class.) I do see the test correctly open the OptionScreen during the run.
public class MyTest extends ActivityInstrumentationTestCase2<MainMenu> {
...
@Override
protected void setUp() throws Exception {
super.setUp();
Instrumentation instrumentation = getInstrumentation();
Instrumentation.ActivityMonitor monitor = instrumentation.addMonitor(OptionScreen.class.getName(), null, false);
StartNewActivity(); // See next paragraph for what this does, probably mostly irrelevant.
activity = getActivity();
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(activity);
settings.edit().clear();
settings.edit().commit(); // I am pretty sure this is not necessary but not harmful either.
StartNewActivity Code:
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setClassName(instrumentation.getTargetContext(),
OptionScreen.class.getName());
instrumentation.startActivitySync(intent);
Activity currentActivity = getInstrumentation()
.waitForMonitorWithTimeout(monitor, 5);
assertTrue(currentActivity != null);
Thanks!
The problem is that you aren't saving the original editor from the edit() call, and you fetch a new instance of the editor and call commit() on that without having made any changes to that one. Try this:
Editor editor = settings.edit();
editor.clear();
editor.commit();