1 files changed, 189 insertions, 0 deletions
diff --git a/src/components/utils/test/singleton_test.cc b/src/components/utils/test/singleton_test.cc
new file mode 100644
index 000000000..8a9e6b31e
--- /dev/null
+++ b/src/components/utils/test/singleton_test.cc
@@ -0,0 +1,189 @@
+/*
+ * Copyright (c) 2015, Ford Motor Company
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * Neither the name of the Ford Motor Company nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "gtest/gtest.h"
+#include "utils/singleton.h"
+#include <pthread.h>
+
+namespace test {
+namespace components {
+namespace utils {
+
+using ::utils::Singleton;
+
+class SingletonTest : public ::utils::Singleton<SingletonTest> {
+ public:
+
+  void SetValue(int value) {
+    test_value = value;
+  }
+  int GetValue() {
+    return test_value;
+  }
+
+  FRIEND_BASE_SINGLETON_CLASS (SingletonTest);
+ private:
+  int test_value;
+};
+
+TEST(SingletonTest, CreateAndDestroySingleton) {
+  //assert
+  ASSERT_EQ(SingletonTest::instance(), SingletonTest::instance());
+  ASSERT_EQ(0, SingletonTest::instance()->GetValue());
+  ASSERT_TRUE(SingletonTest::exists());
+  SingletonTest::instance()->SetValue(5);
+  ASSERT_EQ(5, SingletonTest::instance()->GetValue());
+
+  //act
+  SingletonTest::destroy();
+
+  //assert
+  ASSERT_FALSE(SingletonTest::exists());
+}
+
+TEST(SingletonTest, DestroySingletonTwice) {
+  //assert
+  ASSERT_EQ(0, SingletonTest::instance()->GetValue());
+  ASSERT_TRUE(SingletonTest::exists());
+
+  //act
+  SingletonTest::destroy();
+  //assert
+  ASSERT_FALSE(SingletonTest::exists());
+
+  //act
+  SingletonTest::destroy();
+  //assert
+  ASSERT_FALSE(SingletonTest::exists());
+}
+
+TEST(SingletonTest, DeleteSingletonCreateAnother) {
+  //arrange
+  SingletonTest::instance()->SetValue(10);
+  //assert
+  ASSERT_TRUE(SingletonTest::exists());
+  ASSERT_EQ(10, SingletonTest::instance()->GetValue());
+  //act
+  SingletonTest::destroy();
+  //assert
+  ASSERT_FALSE(SingletonTest::exists());
+
+  //act
+  SingletonTest::instance();
+
+  //assert
+  ASSERT_EQ(0, SingletonTest::instance()->GetValue());
+  ASSERT_TRUE(SingletonTest::exists());
+  SingletonTest::destroy();
+}
+
+void* func_pthread1(void*) {
+  SingletonTest* singleton_in_other_thread =  SingletonTest::instance();
+  pthread_exit(singleton_in_other_thread);
+  return NULL;
+}
+
+void* func_pthread2(void * value) {
+  SingletonTest * instance = reinterpret_cast<SingletonTest *>(value);
+  instance->destroy();
+  pthread_exit (NULL);
+  return NULL;
+}
+
+TEST(SingletonTest, CreateSingletonInDifferentThreads) {
+  //arrange
+  SingletonTest::instance();
+  ASSERT_TRUE(SingletonTest::exists());
+
+  pthread_t thread1;
+  pthread_create(&thread1, NULL, func_pthread1, NULL);
+
+  void *instance2;
+  pthread_join(thread1, &instance2);
+  SingletonTest * instance_2 = reinterpret_cast<SingletonTest *>(instance2);
+
+  //assert
+  ASSERT_EQ(SingletonTest::instance(), instance_2);
+
+  //act
+  SingletonTest::destroy();
+  //assert
+  ASSERT_FALSE(SingletonTest::exists());
+}
+
+TEST(SingletonTest, CreateDeleteSingletonInDifferentThreads) {
+  //arrange
+  pthread_t thread1;
+  pthread_create(&thread1, NULL, func_pthread1, NULL);
+
+  pthread_t thread2;
+  pthread_create(&thread2, NULL, func_pthread1, NULL);
+
+  void *instance1;
+  pthread_join(thread1, &instance1);
+  SingletonTest * instance_1 = reinterpret_cast<SingletonTest *>(instance1);
+
+  void *instance2;
+  pthread_join(thread2, &instance2);
+  SingletonTest * instance_2 = reinterpret_cast<SingletonTest *>(instance2);
+
+  //assert
+  ASSERT_TRUE(instance_1->exists());
+  ASSERT_TRUE(instance_2->exists());
+
+  ASSERT_EQ(instance_1, instance_2);
+
+  //act
+  SingletonTest::destroy();
+
+  //assert
+  ASSERT_FALSE(instance_1->exists());
+  ASSERT_FALSE(instance_2->exists());
+}
+
+TEST(SingletonTest, DeleteSingletonInDifferentThread) {
+  //arrange
+  SingletonTest::instance();
+  ASSERT_TRUE(SingletonTest::exists());
+
+  pthread_t thread1;
+  pthread_create(&thread1, NULL, func_pthread2, SingletonTest::instance());
+
+  pthread_join(thread1, NULL);
+
+  //assert
+  ASSERT_FALSE(SingletonTest::exists());
+}
+
+}  // namespace utils
+}  // namespace components
+}  // namespace test