@Test
public void testAddOwners() throws Exception {

	Screen screen = new Screen("s1");
	screen = screenService.createScreen(screen);
	assertEquals(1, screenService.getScreen(screen.getId(), true, false).getOwners().size());
	screenService.addOwners(screen.getId(), new Owner[] { new Owner(new User("i1")) });
	assertEquals(2, screenService.getScreen(screen.getId(), true, false).getOwners().size());
	List<Owner> owners = screenService.getScreen(screen.getId(), true, false).getOwners();
	assertEquals("i1", owners.get(1).getUser().getUserId());
	screenService.addOwners(screen.getId(), new Owner[] { new Owner(new User("i2")) });
	assertEquals(3, screenService.getScreen(screen.getId(), true, false).getOwners().size());
}