| 1 | /* |
|---|---|
| 2 | Copyright 2018 Glen Joseph Fernandes |
| 3 | (glenjofe@gmail.com) |
| 4 | |
| 5 | Distributed under the Boost Software License, Version 1.0. |
| 6 | (http://www.boost.org/LICENSE_1_0.txt) |
| 7 | */ |
| 8 | #include <boost/core/empty_value.hpp> |
| 9 | #include <boost/core/lightweight_test.hpp> |
| 10 | |
| 11 | #if !defined(BOOST_NO_CXX11_FINAL) |
| 12 | class type final { |
| 13 | public: |
| 14 | explicit type(int count) |
| 15 | : value_(count) { } |
| 16 | int value() const { |
| 17 | return value_ + 1; |
| 18 | } |
| 19 | int value() { |
| 20 | return value_ + 2; |
| 21 | } |
| 22 | private: |
| 23 | int value_; |
| 24 | }; |
| 25 | |
| 26 | struct empty final { |
| 27 | int value() const { |
| 28 | return 1; |
| 29 | } |
| 30 | int value() { |
| 31 | return 2; |
| 32 | } |
| 33 | }; |
| 34 | |
| 35 | void test_type() |
| 36 | { |
| 37 | const boost::empty_value<type> v1(boost::empty_init_t(), 3); |
| 38 | BOOST_TEST(v1.get().value() == 4); |
| 39 | boost::empty_value<type> v2(boost::empty_init_t(), 3); |
| 40 | BOOST_TEST(v2.get().value() == 5); |
| 41 | } |
| 42 | |
| 43 | void test_empty() |
| 44 | { |
| 45 | const boost::empty_value<empty> v1 = boost::empty_init_t(); |
| 46 | BOOST_TEST(v1.get().value() == 1); |
| 47 | boost::empty_value<empty> v2; |
| 48 | BOOST_TEST(v2.get().value() == 2); |
| 49 | } |
| 50 | |
| 51 | int main() |
| 52 | { |
| 53 | test_type(); |
| 54 | test_empty(); |
| 55 | return boost::report_errors(); |
| 56 | } |
| 57 | #else |
| 58 | int main() |
| 59 | { |
| 60 | return 0; |
| 61 | } |
| 62 | #endif |
| 63 |