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1 | // Copyright 2021 Peter Dimov. |
2 | // Distributed under the Boost Software License, Version 1.0. | |
3 | // https://www.boost.org/LICENSE_1_0.txt | |
4 | ||
5 | #include <boost/system/result.hpp> | |
6 | #include <boost/core/lightweight_test.hpp> | |
7 | #include <vector> | |
8 | #include <string> | |
9 | ||
10 | using namespace boost::system; | |
11 | ||
12 | struct X | |
13 | { | |
14 | int a; | |
15 | }; | |
16 | ||
17 | struct Y | |
18 | { | |
19 | int a, b; | |
20 | }; | |
21 | ||
22 | struct E | |
23 | { | |
24 | std::string v; | |
25 | }; | |
26 | ||
27 | result<X> fx0() | |
28 | { | |
29 | return {}; | |
30 | } | |
31 | ||
32 | result<X> fx1() | |
33 | { | |
34 | return {{ 1 }}; | |
35 | } | |
36 | ||
37 | result<Y> fy0() | |
38 | { | |
39 | return {}; | |
40 | } | |
41 | ||
42 | result<Y> fy2() | |
43 | { | |
44 | return {{ 1, 2 }}; | |
45 | } | |
46 | ||
47 | result<X, E> fxe0() | |
48 | { | |
49 | return {}; | |
50 | } | |
51 | ||
52 | result<X, E> fxe1() | |
53 | { | |
54 | return {{ 1 }}; | |
55 | } | |
56 | ||
57 | result<std::vector<int>> fv0() | |
58 | { | |
59 | return {}; | |
60 | } | |
61 | ||
62 | result<std::vector<int>> fv1() | |
63 | { | |
64 | return {{ 1 }}; | |
65 | } | |
66 | ||
67 | result<std::vector<int>> fv2() | |
68 | { | |
69 | return {{ 1, 2 }}; | |
70 | } | |
71 | ||
72 | int main() | |
73 | { | |
74 | { | |
75 | result<X> r = fx0(); | |
76 | ||
77 | BOOST_TEST( r.has_value() ); | |
78 | ||
79 | BOOST_TEST_EQ( r->a, 0 ); | |
80 | } | |
81 | ||
82 | { | |
83 | result<X> r = fx1(); | |
84 | ||
85 | BOOST_TEST( r.has_value() ); | |
86 | ||
87 | BOOST_TEST_EQ( r->a, 1 ); | |
88 | } | |
89 | ||
90 | { | |
91 | result<Y> r = fy0(); | |
92 | ||
93 | BOOST_TEST( r.has_value() ); | |
94 | ||
95 | BOOST_TEST_EQ( r->a, 0 ); | |
96 | BOOST_TEST_EQ( r->b, 0 ); | |
97 | } | |
98 | ||
99 | { | |
100 | result<Y> r = fy2(); | |
101 | ||
102 | BOOST_TEST( r.has_value() ); | |
103 | ||
104 | BOOST_TEST_EQ( r->a, 1 ); | |
105 | BOOST_TEST_EQ( r->b, 2 ); | |
106 | } | |
107 | ||
108 | { | |
109 | result<X, E> r = fxe0(); | |
110 | ||
111 | BOOST_TEST( r.has_value() ); | |
112 | ||
113 | BOOST_TEST_EQ( r->a, 0 ); | |
114 | } | |
115 | ||
116 | { | |
117 | result<X, E> r = fxe1(); | |
118 | ||
119 | BOOST_TEST( r.has_value() ); | |
120 | ||
121 | BOOST_TEST_EQ( r->a, 1 ); | |
122 | } | |
123 | ||
124 | { | |
125 | result<std::vector<int>> r = fv0(); | |
126 | ||
127 | BOOST_TEST( r.has_value() ); | |
128 | ||
129 | BOOST_TEST_EQ( r->size(), 0 ); | |
130 | } | |
131 | ||
132 | { | |
133 | result<std::vector<int>> r = fv1(); | |
134 | ||
135 | BOOST_TEST( r.has_value() ); | |
136 | ||
137 | BOOST_TEST_EQ( r->size(), 1 ); | |
138 | BOOST_TEST_EQ( r->at(0), 1 ); | |
139 | } | |
140 | ||
141 | { | |
142 | result<std::vector<int>> r = fv2(); | |
143 | ||
144 | BOOST_TEST( r.has_value() ); | |
145 | ||
146 | BOOST_TEST_EQ( r->size(), 2 ); | |
147 | BOOST_TEST_EQ( r->at(0), 1 ); | |
148 | BOOST_TEST_EQ( r->at(1), 2 ); | |
149 | } | |
150 | ||
151 | return boost::report_errors(); | |
152 | } |