1// Unit test for boost::lexical_cast.
2//
3// See http://www.boost.org for most recent version, including documentation.
4//
5// Copyright Antony Polukhin, 2012-2024.
6//
7// Distributed under the Boost
8// Software License, Version 1.0. (See accompanying file
9// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
10
11#include <boost/config.hpp>
12
13#if defined(__INTEL_COMPILER)
14#pragma warning(disable: 193 383 488 981 1418 1419)
15#elif defined(BOOST_MSVC)
16#pragma warning(disable: 4097 4100 4121 4127 4146 4244 4245 4511 4512 4701 4800)
17#endif
18
19#include <boost/lexical_cast.hpp>
20#include <boost/core/lightweight_test.hpp>
21#include <boost/range/iterator_range.hpp>
22
23#include <cstdlib>
24
25#include "escape_struct.hpp"
26
27#ifndef BOOST_NO_EXCEPTIONS
28#error "This test must be compiled with -DBOOST_NO_EXCEPTIONS"
29#endif
30
31namespace boost {
32
33BOOST_NORETURN void throw_exception(std::exception const & ) {
34 static int state = 0;
35 ++ state;
36
37 EscapeStruct v("");
38 switch(state) {
39 case 1:
40 lexical_cast<char>(arg: v); // should call boost::throw_exception
41 std::exit(status: 1);
42 case 2:
43 lexical_cast<unsigned char>(arg: v); // should call boost::throw_exception
44 std::exit(status: 2);
45 }
46 std::exit(status: boost::report_errors());
47}
48
49}
50
51void test_exceptions_off() {
52 using namespace boost;
53 EscapeStruct v("");
54
55 v = lexical_cast<EscapeStruct>(arg: 100);
56 BOOST_TEST_EQ(lexical_cast<int>(v), 100);
57 BOOST_TEST_EQ(lexical_cast<unsigned int>(v), 100u);
58
59 v = lexical_cast<EscapeStruct>(arg: 0.0);
60 BOOST_TEST_EQ(lexical_cast<double>(v), 0.0);
61
62 BOOST_TEST_EQ(lexical_cast<short>(100), 100);
63 BOOST_TEST_EQ(lexical_cast<float>(0.0), 0.0);
64
65 lexical_cast<short>(arg: 700000); // should call boost::throw_exception
66 BOOST_TEST(false);
67}
68
69int main() {
70 test_exceptions_off();
71
72 return boost::report_errors();
73}
74
75

source code of boost/libs/lexical_cast/test/no_exceptions_test.cpp