def get_next_id(self):
        try:
            query = {'_id': 'last_id'}
            update = {'$inc': {'id': 1}}
            fn = self.db.internal.find_and_modify
            row = fn(query, update, upsert=True, new=True)
        except Exception as e:
            raise DatabaseException(e)
        return row['id']
def test_cnli_caps_on(fake_qtile, patched_cnli, fake_window):
    widget = patched_cnli.CapsNumLockIndicator()

    # Simulate Caps on
    MockCapsNumLockIndicator.index = 1

    fakebar = FakeBar([widget], window=fake_window)
    widget._configure(fake_qtile, fakebar)
    text = widget.poll()

    assert text == "Caps on Num on"