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92f5a8d4 | 1 | /* Unit testing for outcomes |
1e59de90 | 2 | (C) 2013-2022 Niall Douglas <http://www.nedproductions.biz/> (9 commits) |
92f5a8d4 TL |
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 | ||
1e59de90 | 30 | #include <boost/outcome.hpp> |
92f5a8d4 TL |
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; | |
42 | constexpr explicit udt1(const char *v) noexcept : _v(v) {} | |
43 | constexpr udt1(udt1 &&o) noexcept : _v(o._v) { o._v = nullptr; } | |
44 | udt1(const udt1 &) = default; | |
45 | 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; | |
52 | constexpr const char *operator*() const noexcept { return _v; } | |
53 | }; | |
54 | struct udt2 // NOLINT | |
55 | { | |
56 | const char *_v{nullptr}; | |
57 | udt2() = default; | |
58 | constexpr explicit udt2(const char *v) noexcept : _v(v) {} | |
59 | constexpr udt2(udt2 &&o) noexcept : _v(o._v) { o._v = nullptr; } | |
60 | udt2(const udt2 &) = default; | |
61 | 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; | |
68 | 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 | } |