Move Singleton out of folly/experimental into folly/

[folly.git] / folly / test / SingletonVaultCTest.cpp

diff --git a/folly/test/SingletonVaultCTest.cpp b/folly/test/SingletonVaultCTest.cpp
new file mode 100644 (file)
index 0000000..1182278
--- /dev/null
+++ b/folly/test/SingletonVaultCTest.cpp
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2015 Facebook, Inc.
+ *
+ * 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 <folly/Singleton.h>
+#include <folly/SingletonVault_c.h>
+
+#include <gtest/gtest.h>
+
+#include <thread>
+
+__thread long instance_counter_instances = 0;
+
+class InstanceCounter {
+ public:
+  InstanceCounter() {
+    instance_counter_instances++;
+  }
+
+  ~InstanceCounter() {
+    instance_counter_instances--;
+  }
+};
+
+TEST(SingletonVault, singletonReturnsSingletonInstance) {
+  SingletonVault_t *c = SingletonVault_singleton();
+  auto *cpp = folly::SingletonVault::singleton();
+  EXPECT_EQ(c, cpp);
+}
+
+struct TestTag {};
+template <typename T, typename Tag = folly::detail::DefaultTag>
+using SingletonTest = folly::Singleton <T, Tag, TestTag>;
+
+TEST(SingletonVault, singletonsAreCreatedAndDestroyed) {
+  auto vault = folly::SingletonVault::singleton<TestTag>();
+  SingletonTest<InstanceCounter> counter_singleton;
+  SingletonVault_registrationComplete((SingletonVault_t*) vault);
+  InstanceCounter *counter = SingletonTest<InstanceCounter>::get();
+  EXPECT_EQ(instance_counter_instances, 1);
+  SingletonVault_destroyInstances((SingletonVault_t*) vault);
+  EXPECT_EQ(instance_counter_instances, 0);
+}