assertNotNull(result);
        assertEquals(0, result.getFirst().length);
        assertEquals(0, result.getSecond().length);
    }

    @Test
    public void test_getParentGroup_exactlyAtDepthLimit() {
        EntraIdAuthenticator authenticator = new EntraIdAuthenticator();
        authenticator.setMaxGroupDepth(5);

        // Test with depth exactly at the limit - should return empty arrays