refactor concurrent module code

tests/concurrent/MutexIntegrationTest.cpp

@@ -0,0 +1,51 @@
+#include "gtest/gtest.h"
+
+#include "pithread.h"
+#include "testutil.h"
+
+class Mutex : public ::testing::Test, public TestUtil {
+public:
+	PIMutex* m = new PIMutex();
+};
+
+TEST_F(Mutex, lock_is_protect) {
+    m->lock();
+    bool* isProtect = new bool(true);
+
+    createThread([&](){
+        m->lock();
+        *isProtect = false;
+    });
+	EXPECT_FALSE(thread->waitForFinish(WAIT_THREAD_TIME_MS));
+    ASSERT_TRUE(*isProtect);
+}
+
+TEST_F(Mutex, unlock_is_release) {
+    m->lock();
+    bool* isReleased = new bool(false);
+    m->unlock();
+
+    createThread([&](){
+        m->lock();
+        *isReleased = true;
+        m->unlock();
+    });
+    ASSERT_TRUE(*isReleased);
+}
+
+TEST_F(Mutex, tryLock_is_false_when_locked) {
+    createThread([&](){
+        m->lock();
+        piMSleep(WAIT_THREAD_TIME_MS);
+    });
+    ASSERT_FALSE(m->tryLock());
+}
+
+TEST_F(Mutex, tryLock_is_true_when_unlocked) {
+    ASSERT_TRUE(m->tryLock());
+}
+
+TEST_F(Mutex, tryLock_is_recursive_lock_enable) {
+    m->lock();
+    ASSERT_TRUE(m->tryLock());
+}