/*
- * Copyright 2015 Facebook, Inc.
+ * Copyright 2017 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <folly/Memory.h>
#include <folly/Arena.h>
#include <folly/String.h>
+#include <folly/portability/GTest.h>
#include <glog/logging.h>
-#include <gtest/gtest.h>
#include <type_traits>
+#include <utility>
using namespace folly;
+TEST(make_unique, compatible_with_std_make_unique) {
+ // HACK: To enforce that `folly::` is imported here.
+ to_shared_ptr(std::unique_ptr<std::string>());
+
+ using namespace std;
+ make_unique<string>("hello, world");
+}
+
+TEST(to_weak_ptr, example) {
+ auto s = std::make_shared<int>(17);
+ EXPECT_EQ(1, s.use_count());
+ EXPECT_EQ(2, (to_weak_ptr(s).lock(), s.use_count())) << "lvalue";
+ EXPECT_EQ(3, (to_weak_ptr(decltype(s)(s)).lock(), s.use_count())) << "rvalue";
+}
+
+TEST(allocate_sys_buffer, compiles) {
+ auto buf = allocate_sys_buffer(256);
+ // Freed at the end of the scope.
+}
+
template <std::size_t> struct T {};
template <std::size_t> struct S {};
template <std::size_t> struct P {};
ASSERT_EQ(nullptr, s.get());
}
-int main(int argc, char **argv) {
- FLAGS_logtostderr = true;
- google::InitGoogleLogging(argv[0]);
- testing::InitGoogleTest(&argc, argv);
+template <typename C>
+static void test_enable_shared_from_this(std::shared_ptr<C> sp) {
+ ASSERT_EQ(1l, sp.use_count());
+
+ // Test shared_from_this().
+ std::shared_ptr<C> sp2 = sp->shared_from_this();
+ ASSERT_EQ(sp, sp2);
+
+ // Test weak_from_this().
+ std::weak_ptr<C> wp = sp->weak_from_this();
+ ASSERT_EQ(sp, wp.lock());
+ sp.reset();
+ sp2.reset();
+ ASSERT_EQ(nullptr, wp.lock());
+
+ // Test shared_from_this() and weak_from_this() on object not owned by a
+ // shared_ptr. Undefined in C++14 but well-defined in C++17. Also known to
+ // work with libstdc++ >= 20150123. Feel free to add other standard library
+ // versions where the behavior is known.
+#if __cplusplus >= 201700L || \
+ __GLIBCXX__ >= 20150123L
+ C stack_resident;
+ ASSERT_THROW(stack_resident.shared_from_this(), std::bad_weak_ptr);
+ ASSERT_TRUE(stack_resident.weak_from_this().expired());
+#endif
+}
- return RUN_ALL_TESTS();
+TEST(enable_shared_from_this, compatible_with_std_enable_shared_from_this) {
+ // Compile-time compatibility.
+ class C_std : public std::enable_shared_from_this<C_std> {};
+ class C_folly : public folly::enable_shared_from_this<C_folly> {};
+ static_assert(
+ noexcept(std::declval<C_std>().shared_from_this()) ==
+ noexcept(std::declval<C_folly>().shared_from_this()), "");
+ static_assert(
+ noexcept(std::declval<C_std const>().shared_from_this()) ==
+ noexcept(std::declval<C_folly const>().shared_from_this()), "");
+ static_assert(noexcept(std::declval<C_folly>().weak_from_this()), "");
+ static_assert(noexcept(std::declval<C_folly const>().weak_from_this()), "");
+
+ // Runtime compatibility.
+ test_enable_shared_from_this(std::make_shared<C_folly>());
+ test_enable_shared_from_this(std::make_shared<C_folly const>());
}