1 /* Unit testing for outcomes 2 (C) 2013-2020 Niall Douglas <http://www.nedproductions.biz/> (9 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_0010_test, "Expected's operator->(), operator*() and .error() throw exceptions when they should not") 35 { 36 using namespace BOOST_OUTCOME_V2_NAMESPACE; 37 const char *a = "hi", *b = "bye"; 38 struct udt1 // NOLINT 39 { 40 const char *_v{nullptr}; 41 udt1() = default; udt1udt142 constexpr explicit udt1(const char *v) noexcept : _v(v) {} udt1udt143 constexpr udt1(udt1 &&o) noexcept : _v(o._v) { o._v = nullptr; } 44 udt1(const udt1 &) = default; operator =udt145 constexpr udt1 &operator=(udt1 &&o) noexcept 46 { 47 _v = o._v; 48 o._v = nullptr; 49 return *this; 50 } 51 udt1 &operator=(const udt1 &) = delete; operator *udt152 constexpr const char *operator*() const noexcept { return _v; } 53 }; 54 struct udt2 // NOLINT 55 { 56 const char *_v{nullptr}; 57 udt2() = default; udt2udt258 constexpr explicit udt2(const char *v) noexcept : _v(v) {} udt2udt259 constexpr udt2(udt2 &&o) noexcept : _v(o._v) { o._v = nullptr; } 60 udt2(const udt2 &) = default; operator =udt261 constexpr udt2 &operator=(udt2 &&o) noexcept 62 { 63 _v = o._v; 64 o._v = nullptr; 65 return *this; 66 } 67 udt1 &operator=(const udt1 &) = delete; operator *udt268 constexpr const char *operator*() const noexcept { return _v; } 69 }; 70 result<udt1, udt2> p(udt1{a}); 71 result<udt1, udt2> n(udt2{b}); 72 // State check 73 BOOST_CHECK(p.has_value()); 74 BOOST_CHECK(!n.has_value()); 75 // These should behave as expected (!) 76 // BOOST_CHECK_NO_THROW(p.value()); 77 // BOOST_CHECK_NO_THROW(n.value()); 78 // And state is not destroyed 79 BOOST_CHECK(p.has_value() && *p.assume_value() == a); 80 BOOST_CHECK(!n.has_value() && *n.assume_error() == b); 81 // LEWG Expected provides rvalue ref semantics for operator*(), error() and error_or() 82 udt1 a1(std::move(p.assume_value())); 83 BOOST_CHECK(*a1 == a); 84 BOOST_CHECK(*p.assume_value() == nullptr); 85 udt2 e2(std::move(n).assume_error()); 86 BOOST_CHECK(*e2 == b); 87 BOOST_CHECK(*n.assume_error() == nullptr); // NOLINT 88 } 89