RTOS: add tests for EvenFlags class

TESTS/mbedmicro-rtos-mbed/event_flags/main.cpp

@@ -0,0 +1,50 @@
+#include "mbed.h"
+#include "greentea-client/test_env.h"
+#include "rtos.h"
+
+#if defined(MBED_RTOS_SINGLE_THREAD)
+  #error [NOT_SUPPORTED] test not supported
+#endif
+
+#define TEST_STACK_SIZE 512
+
+#define   EVENT_SET_VALUE    0x01
+const int EVENT_TO_EMIT = 100;
+const int EVENT_HANDLE_DELEY = 25;
+
+DigitalOut led(LED1);
+EventFlags event_flags();
+
+int events_counter = 0;
+
+void led_thread() {
+    while (true) {
+        // events flags that are reported as event are automatically cleared.
+        event_flags.wait(EVENT_SET_VALUE);
+        led = !led;
+        events_counter++;
+    }
+}
+
+int main (void) {
+    GREENTEA_SETUP(20, "default_auto");
+
+    Thread thread(osPriorityNormal, TEST_STACK_SIZE);
+    thread.start(led_thread);
+
+    bool result = false;
+
+    printf("Handling %d events...\r\n", EVENT_TO_EMIT);
+
+    while (true) {
+        Thread::wait(2 * EVENT_HANDLE_DELEY);
+        event_flags.set(EVENT_SET_VALUE);
+        if (events_counter == EVENT_TO_EMIT) {
+            printf("Handled %d events\r\n", events_counter);
+            result = true;
+            break;
+        }
+    }
+    GREENTEA_TESTSUITE_RESULT(result);
+    return 0;
+}