unittest folder added

unittest/internal/osal/IntTestMutex.cpp

@@ -0,0 +1,41 @@
+#include <unittest/internal/IntTestMutex.h>
+#include <fsfw/ipc/MutexFactory.h>
+#include <unittest/internal/UnittDefinitions.h>
+
+#if defined(hosted)
+#include <fsfw/osal/hosted/Mutex.h>
+#include <thread>
+#include <future>
+#endif
+
+
+void testmutex::testMutex() {
+	std::string id = "[testMutex]";
+	MutexIF* mutex = MutexFactory::instance()->createMutex();
+	auto result = mutex->lockMutex(MutexIF::POLLING);
+	if(result != HasReturnvaluesIF::RETURN_OK) {
+		unitt::put_error(id);
+	}
+	// timed_mutex from the C++ library specifies undefined behaviour if
+	// the timed mutex is locked twice from the same thread.
+#if defined(hosted)
+	// hold on, this actually worked ? :-D This calls the function from
+	// another thread and stores the returnvalue in a future.
+	auto future = std::async(&MutexIF::lockMutex, mutex, 1);
+	result = future.get();
+#else
+	result = mutex->lockMutex(MutexIF::TimeoutType::WAITING, 1);
+#endif
+	if(result != MutexIF::MUTEX_TIMEOUT) {
+		unitt::put_error(id);
+	}
+
+	result = mutex->unlockMutex();
+	if(result != HasReturnvaluesIF::RETURN_OK) {
+		unitt::put_error(id);
+	}
+	result = mutex->unlockMutex();
+	if(result != MutexIF::CURR_THREAD_DOES_NOT_OWN_MUTEX) {
+		unitt::put_error(id);
+	}
+}