test: add sleep manager tests

This commits contains two tests:
- race condition
- deep sleep locking/unlocking

TESTS/mbed_hal/sleep_manager/main.cpp

@@ -0,0 +1,60 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2017 ARM Limited
+ *
+ * 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 "utest/utest.h"
+#include "unity/unity.h"
+#include "greentea-client/test_env.h"
+
+#if !DEVICE_SLEEP
+#error [NOT_SUPPORTED] test not supported
+#endif
+
+using namespace utest::v1;
+
+void sleep_manager_deepsleep_counter_test()
+{
+    bool deep_sleep_allowed = sleep_manager_can_deep_sleep();
+    TEST_ASSERT_TRUE(deep_sleep_allowed);
+    
+    sleep_manager_lock_deep_sleep();
+    deep_sleep_allowed = sleep_manager_can_deep_sleep();
+    TEST_ASSERT_FALSE(deep_sleep_allowed);
+
+    sleep_manager_unlock_deep_sleep();
+    deep_sleep_allowed = sleep_manager_can_deep_sleep();
+    TEST_ASSERT_TRUE(deep_sleep_allowed);
+}
+
+utest::v1::status_t greentea_failure_handler(const Case *const source, const failure_t reason) 
+{
+    greentea_case_failure_abort_handler(source, reason);
+    return STATUS_CONTINUE;
+}
+
+utest::v1::status_t greentea_test_setup(const size_t number_of_cases) 
+{
+    GREENTEA_SETUP(20, "default_auto");
+    return greentea_test_setup_handler(number_of_cases);
+}
+
+Case cases[] = {
+    Case("sleep manager -  deep sleep counter", sleep_manager_deepsleep_counter_test, greentea_failure_handler),
+};
+
+Specification specification(greentea_test_setup, cases, greentea_test_teardown_handler);
+
+int main() {
+    Harness::run(specification);
+}

TESTS/mbed_hal/sleep_manager_racecondition/main.cpp

@@ -0,0 +1,99 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2017 ARM Limited
+ *
+ * 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 "utest/utest.h"
+#include "unity/unity.h"
+#include "greentea-client/test_env.h"
+
+#if !DEVICE_SLEEP
+#error [NOT_SUPPORTED] test not supported
+#endif
+
+using namespace utest::v1;
+
+void sleep_manager_locking_thread_test()
+{
+    for (uint32_t i = 0; i < 100; i++) {
+        sleep_manager_lock_deep_sleep();
+        Thread::wait(25);
+        sleep_manager_unlock_deep_sleep();
+    }
+}
+
+void sleep_manager_multithread_test()
+{
+    {
+        Callback<void()> cb(sleep_manager_locking_thread_test);
+        Thread t1;
+        Thread t2;
+
+        t1.start(callback(cb));
+        Thread::wait(25);
+        t2.start(callback(cb));
+
+        // Wait for the threads to finish
+        t1.join();
+        t2.join();
+    }
+
+    bool deep_sleep_allowed = sleep_manager_can_deep_sleep();
+    TEST_ASSERT_TRUE_MESSAGE(deep_sleep_allowed, "Deep sleep should be allowed");
+}
+
+void sleep_manager_locking_irq_test()
+{
+    sleep_manager_lock_deep_sleep();
+    sleep_manager_unlock_deep_sleep();
+}
+
+void sleep_manager_irq_test()
+{
+    {
+        Ticker ticker1;
+        Timer timer;
+
+        ticker1.attach_us(&sleep_manager_locking_irq_test, 500);
+
+        // run this for 5 seconds
+        timer.start();
+        int start = timer.read();
+        int end = start + 5;
+        while (timer.read() < end) {
+            sleep_manager_locking_irq_test();
+        }
+        timer.stop();
+    }
+
+    bool deep_sleep_allowed = sleep_manager_can_deep_sleep();
+    TEST_ASSERT_TRUE_MESSAGE(deep_sleep_allowed, "Deep sleep should be allowed");
+}
+
+utest::v1::status_t greentea_test_setup(const size_t number_of_cases) 
+{
+    GREENTEA_SETUP(30, "default_auto");
+    return greentea_test_setup_handler(number_of_cases);
+}
+
+Case cases[] = {
+    Case("sleep manager HAL - locking multithreaded", sleep_manager_multithread_test),
+    Case("sleep manager HAL - locking IRQ", sleep_manager_irq_test),
+};
+
+Specification specification(greentea_test_setup, cases, greentea_test_teardown_handler);
+
+int main() {
+    Harness::run(specification);
+}