// Test User SID (type 1)
        assertEquals("1Test User", sambaHelper.getAccountId(createMockSID(1, "Test User")));

        // Test Domain Group SID (type 2)
        assertEquals("2Domain Group", sambaHelper.getAccountId(createMockSID(2, "Domain Group")));

        // Test Alias SID (type 4, mapped to 2)
        assertEquals("2Local Group", sambaHelper.getAccountId(createMockSID(4, "Local Group")));