String expected = "admin\\29\\28|\\28password=\\2a";
        assertEquals(expected, ldapManager.escapeLDAPSearchFilter(injectionAttempt));
    }

    @Test
    public void test_escapeLDAPSearchFilter_withAllSpecialCharacters() {
        LdapManager ldapManager = new LdapManager();
        ldapManager.init();

        // Test all special characters together (note: = is not escaped per RFC 4515)