/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* 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/lang/Extern.h>
#include <folly/portability/GTest.h>
namespace folly::extern_test {
extern int foobar(int);
}
static int hasdef(int a) {
return -a;
}
FOLLY_CREATE_EXTERN_ACCESSOR(access_foobar_v, folly::extern_test::foobar);
FOLLY_CREATE_EXTERN_ACCESSOR(access_hasdef_v, hasdef);
class ExternTest : public testing::Test {};
TEST_F(ExternTest, example) {
EXPECT_EQ(nullptr, access_foobar_v<false>);
EXPECT_EQ(nullptr, access_hasdef_v<false>);
EXPECT_EQ(&hasdef, access_hasdef_v<true>);
EXPECT_EQ(-17, access_hasdef_v<true>(17));
}