How can I shadow the PackageManager with Robolectric

Question

My Android application has a simple method to fire off an intent to display a URL.

protected void launchBrowser(int id)
{
    Uri uri = Uri.parse( getStrin         


        

Answer 1

You can set the ShadowPackageManager in a separate method (without extending RobolectricTestRunner)

private void setupPackageManager() {
    ShadowApplication shadowApplication = shadowOf(Robolectric.application);
    shadowApplication.setPackageManager(mockPackageManager);
    List activities = new ArrayList();
    activities.add(resolveInfo("com.test.package.Class1"));
    activities.add(resolveInfo("com.test.package.Class2"));
    when(mockPackageManager.queryIntentActivities(any(Intent.class), anyInt())).thenReturn(activities);
}

Note : Here, i have used mockito & mocked the packagemanager for my unittest instead of using the actual PackageManager.