1 /* Unit testing for outcomes 2 (C) 2013-2020 Niall Douglas <http://www.nedproductions.biz/> (2 commits) 3 4 5 Boost Software License - Version 1.0 - August 17th, 2003 6 7 Permission is hereby granted, free of charge, to any person or organization 8 obtaining a copy of the software and accompanying documentation covered by 9 this license (the "Software") to use, reproduce, display, distribute, 10 execute, and transmit the Software, and to prepare derivative works of the 11 Software, and to permit third-parties to whom the Software is furnished to 12 do so, all subject to the following: 13 14 The copyright notices in the Software and this entire statement, including 15 the above license grant, this restriction and the following disclaimer, 16 must be included in all copies of the Software, in whole or in part, and 17 all derivative works of the Software, unless such copies or derivative 18 works are solely in the form of machine-executable object code generated by 19 a source language processor. 20 21 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 22 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 23 FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT 24 SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE 25 FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, 26 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 27 DEALINGS IN THE SOFTWARE. 28 */ 29 30 #include <boost/outcome/outcome.hpp> 31 #include <boost/test/unit_test.hpp> 32 #include <boost/test/unit_test_monitor.hpp> 33 34 BOOST_OUTCOME_AUTO_TEST_CASE(issues_0140_result, "Construction of non copy constructible value_type fails to not compile") 35 { 36 namespace out = BOOST_OUTCOME_V2_NAMESPACE; 37 38 enum op 39 { 40 constructed, 41 moved, 42 copied 43 }; 44 struct NotCopyMoveConstructible 45 { 46 op v{op::constructed}; 47 NotCopyMoveConstructible() = default; 48 NotCopyMoveConstructible(const NotCopyMoveConstructible &o) = delete; 49 NotCopyMoveConstructible(NotCopyMoveConstructible &&) = delete; 50 NotCopyMoveConstructible &operator=(const NotCopyMoveConstructible &) = delete; 51 NotCopyMoveConstructible &operator=(NotCopyMoveConstructible &&) = delete; 52 ~NotCopyMoveConstructible() = default; 53 }; 54 struct NotMoveConstructible 55 { 56 op v{op::constructed}; 57 NotMoveConstructible() = default; NotMoveConstructibleNotMoveConstructible58 NotMoveConstructible(const NotMoveConstructible & /*unused*/) 59 : v(op::copied) 60 { 61 } 62 NotMoveConstructible(NotMoveConstructible &&) = delete; 63 NotMoveConstructible &operator=(const NotMoveConstructible &) = delete; 64 NotMoveConstructible &operator=(NotMoveConstructible &&) = delete; 65 ~NotMoveConstructible() = default; 66 }; 67 struct NotCopyConstructible 68 { 69 op v{op::constructed}; 70 NotCopyConstructible() = default; NotCopyConstructibleNotCopyConstructible71 NotCopyConstructible(NotCopyConstructible && /*unused*/) noexcept : v(op::moved) {} 72 NotCopyConstructible(const NotCopyConstructible & /*unused*/) = delete; 73 NotCopyConstructible &operator=(const NotCopyConstructible &) = delete; 74 NotCopyConstructible &operator=(NotCopyConstructible &&) = delete; 75 ~NotCopyConstructible() = default; 76 }; 77 78 // Uncopyable and immovable items should be neither copyable nor moveable 79 static_assert(!std::is_copy_constructible<out::result<NotCopyMoveConstructible>>::value, "result<NotCopyMoveConstructible> is copy constructible!"); 80 static_assert(!std::is_move_constructible<out::result<NotCopyMoveConstructible>>::value, "result<NotCopyMoveConstructible> is move constructible!"); 81 static_assert(!std::is_convertible<const NotCopyMoveConstructible &, NotCopyMoveConstructible>::value, ""); 82 static_assert(!std::is_convertible<NotCopyMoveConstructible &&, NotCopyMoveConstructible>::value, ""); 83 static_assert(!std::is_constructible<out::result<NotCopyMoveConstructible>, const NotCopyMoveConstructible &>::value, "result<NotCopyMoveConstructible> is constructible from const NotCopyMoveConstructible&!"); 84 static_assert(!std::is_constructible<out::result<NotCopyMoveConstructible>, NotCopyMoveConstructible &&>::value, "result<NotCopyMoveConstructible> is constructible from NotCopyMoveConstructible&&!"); 85 86 // Immovable items should fall back to copy 87 static_assert(!std::is_move_constructible<NotMoveConstructible>::value, "NotMoveConstructible is move constructible!"); 88 static_assert(std::is_move_constructible<out::result<NotMoveConstructible>>::value, "result<NotMoveConstructible> is not move constructible!"); 89 static_assert(std::is_constructible<out::result<NotMoveConstructible>, const NotMoveConstructible &>::value, "result<NotMoveConstructible> is not constructible from NotMoveConstructible&&!"); 90 91 // Uncopyable items should never move (this was the bug report) 92 static_assert(!std::is_copy_constructible<out::result<NotCopyConstructible>>::value, "result<NotCopyConstructible> is copy constructible!"); 93 static_assert(!std::is_constructible<out::result<NotCopyConstructible>, const NotCopyConstructible &>::value, "result<NotCopyConstructible> is constructible from const NotCopyConstructible&!"); 94 95 BOOST_CHECK(true); 96 } 97