@Test public void testRemoveContactFromGroup() throws Exception { groupService.create(group); groupService.addAggregation(committee, group); contactService.addToGroup(topLevel, group); assertEquals(1, group.getTopLevelMembers().size()); contactService.removeFromGroup(topLevel, group); Group fromDb = groupService.findById(group.getId()); assertEquals(0, fromDb.getTopLevelMembers().size()); Contact contactFromDb = contactService.findById(topLevel.getId()); assertEquals(0, contactFromDb.getGroups().size()); }