asynchronous_dns_invalid_host.cpp

00001 /*
00002  * Copyright (c) 2018, ARM Limited, All Rights Reserved
00003  * SPDX-License-Identifier: Apache-2.0
00004  *
00005  * Licensed under the Apache License, Version 2.0 (the "License"); you may
00006  * not use this file except in compliance with the License.
00007  * You may obtain a copy of the License at
00008  *
00009  * http://www.apache.org/licenses/LICENSE-2.0
00010  *
00011  * Unless required by applicable law or agreed to in writing, software
00012  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
00013  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014  * See the License for the specific language governing permissions and
00015  * limitations under the License.
00016  */
00017 
00018 #include "mbed.h"
00019 #include "greentea-client/test_env.h"
00020 #include "unity.h"
00021 #include "utest.h"
00022 #include "dns_tests.h"
00023 
00024 using namespace utest::v1;
00025 
00026 namespace {
00027 int result_ok;
00028 int result_no_mem;
00029 int result_dns_failure;
00030 int result_exp_timeout;
00031 }
00032 
00033 void ASYNCHRONOUS_DNS_INVALID_HOST()
00034 {
00035     // Ensures that cache does not contain entries
00036     do_asynchronous_gethostbyname(dns_test_hosts_second, MBED_CONF_NSAPI_DNS_CACHE_SIZE, &result_ok, &result_no_mem,
00037                                   &result_dns_failure, &result_exp_timeout);
00038 
00039     char dns_test_hosts_new[MBED_CONF_APP_DNS_TEST_HOSTS_NUM][DNS_TEST_HOST_LEN];
00040     memcpy(dns_test_hosts_new, dns_test_hosts, sizeof(dns_test_hosts_new));
00041 
00042     int exp_dns_failure = 0;
00043     int exp_ok = 0;
00044 
00045     // Invalidate 1st and 3th etc. entries
00046     for (unsigned int i = 0; i < MBED_CONF_APP_DNS_SIMULT_QUERIES + 1; i++) {
00047         if ((i % 2) == 0) {
00048             // Last query fails to no memory so do not increase
00049             if (i != MBED_CONF_APP_DNS_SIMULT_QUERIES) {
00050                 exp_dns_failure++;
00051             }
00052             strcat(&(dns_test_hosts_new[i][0]), "_invalid");
00053         } else {
00054             // Last query fails to no memory so do not increase
00055             if (i != MBED_CONF_APP_DNS_SIMULT_QUERIES) {
00056                 exp_ok++;
00057             }
00058         }
00059     }
00060 
00061     do_asynchronous_gethostbyname(dns_test_hosts_new, MBED_CONF_APP_DNS_SIMULT_QUERIES + 1, &result_ok, &result_no_mem,
00062                                   &result_dns_failure, &result_exp_timeout);
00063 
00064     TEST_ASSERT(result_ok == exp_ok);
00065     TEST_ASSERT(result_no_mem == 1); // last query fails for no memory as expected
00066     TEST_ASSERT(result_dns_failure == exp_dns_failure || result_dns_failure == exp_dns_failure + 1);
00067     TEST_ASSERT(result_exp_timeout == 0);
00068 }