Diff: mbed-os/TESTS/netsocket/dns/asynchronous_dns_external_event_queue.cpp

Revision:

0:8fdf9a60065b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os/TESTS/netsocket/dns/asynchronous_dns_external_event_queue.cpp	Wed Oct 10 00:33:53 2018 +0000
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2018, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mbed.h"
+#include "greentea-client/test_env.h"
+#include "unity.h"
+#include "utest.h"
+#include "dns_tests.h"
+
+#include "nsapi_dns.h"
+
+using namespace utest::v1;
+
+namespace {
+int result_ok;
+int result_no_mem;
+int result_dns_failure;
+int result_exp_timeout;
+
+const int EXTERNAL_THREAD_SIZE = 2048;
+const int EVENT_QUEUE_SIZE = 10;
+
+events::EventQueue *event_queue;
+}
+
+static nsapi_error_t event_queue_call(int delay, mbed::Callback<void()> func)
+{
+    if (delay) {
+        if (event_queue->call_in(delay, func) == 0) {
+            return NSAPI_ERROR_NO_MEMORY;
+        }
+    } else {
+        if (event_queue->call(func) == 0) {
+            return NSAPI_ERROR_NO_MEMORY;
+        }
+    }
+    return NSAPI_ERROR_OK;
+}
+
+void ASYNCHRONOUS_DNS_EXTERNAL_EVENT_QUEUE()
+{
+    // Ensures that cache does not contain entries
+    do_asynchronous_gethostbyname(dns_test_hosts, MBED_CONF_NSAPI_DNS_CACHE_SIZE, &result_ok, &result_no_mem,
+                                  &result_dns_failure, &result_exp_timeout);
+
+    TEST_ASSERT(result_ok == MBED_CONF_NSAPI_DNS_CACHE_SIZE);
+    TEST_ASSERT(result_no_mem == 0);
+    TEST_ASSERT(result_dns_failure == 0);
+    TEST_ASSERT(result_exp_timeout == 0);
+
+    // Dispatch event queue
+    Thread eventThread(osPriorityNormal, EXTERNAL_THREAD_SIZE);
+    EventQueue queue(EVENT_QUEUE_SIZE * EVENTS_EVENT_SIZE);
+    eventThread.start(callback(&queue, &EventQueue::dispatch_forever));
+    event_queue = &queue;
+
+    nsapi_dns_call_in_set(event_queue_call);
+
+    do_asynchronous_gethostbyname(dns_test_hosts_second, MBED_CONF_APP_DNS_SIMULT_QUERIES + 1, &result_ok, &result_no_mem,
+                                  &result_dns_failure, &result_exp_timeout);
+
+    TEST_ASSERT(result_ok == MBED_CONF_APP_DNS_SIMULT_QUERIES);
+    TEST_ASSERT(result_no_mem == 1); // last query fails for no memory as expected
+    TEST_ASSERT(result_dns_failure == 0);
+    TEST_ASSERT(result_exp_timeout == 0);
+
+    // Give event queue time to finalise before destructors
+    wait(2.0);
+
+    nsapi_dns_call_in_set(0);
+}