ceph/src/boost/libs/lexical_cast/test/lexical_cast_empty_input_test.cpp

   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, 2011-2020.
   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/test/unit_test.hpp>
  21 #include <boost/range/iterator_range.hpp>
  22
  23 #include "escape_struct.hpp"
  24
  25 using namespace boost;
  26
  27 #if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
  28 #define BOOST_LCAST_NO_WCHAR_T
  29 #endif
  30
  31 template <class T>
  32 void do_test_on_empty_input(T& v)
  33 {
  34     BOOST_CHECK_THROW(lexical_cast<int>(v), bad_lexical_cast);
  35     BOOST_CHECK_THROW(lexical_cast<float>(v), bad_lexical_cast);
  36     BOOST_CHECK_THROW(lexical_cast<double>(v), bad_lexical_cast);
  37 #ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
  38     BOOST_CHECK_THROW(lexical_cast<long double>(v), bad_lexical_cast);
  39 #endif
  40     BOOST_CHECK_THROW(lexical_cast<unsigned int>(v), bad_lexical_cast);
  41     BOOST_CHECK_THROW(lexical_cast<unsigned short>(v), bad_lexical_cast);
  42 #if defined(BOOST_HAS_LONG_LONG)
  43     BOOST_CHECK_THROW(lexical_cast<boost::ulong_long_type>(v), bad_lexical_cast);
  44     BOOST_CHECK_THROW(lexical_cast<boost::long_long_type>(v), bad_lexical_cast);
  45 #elif defined(BOOST_HAS_MS_INT64)
  46     BOOST_CHECK_THROW(lexical_cast<unsigned __int64>(v), bad_lexical_cast);
  47     BOOST_CHECK_THROW(lexical_cast<__int64>(v), bad_lexical_cast);
  48 #endif
  49 }
  50
  51 void test_empty_iterator_range()
  52 {
  53
  54     boost::iterator_range<char*> v;
  55     do_test_on_empty_input(v);
  56     BOOST_CHECK_EQUAL(lexical_cast<std::string>(v), std::string());
  57     BOOST_CHECK_THROW(lexical_cast<char>(v), bad_lexical_cast);
  58     BOOST_CHECK_THROW(lexical_cast<unsigned char>(v), bad_lexical_cast);
  59     BOOST_CHECK_THROW(lexical_cast<signed char>(v), bad_lexical_cast);
  60
  61     boost::iterator_range<const char*> cv;
  62     do_test_on_empty_input(cv);
  63     BOOST_CHECK_EQUAL(lexical_cast<std::string>(cv), std::string());
  64     BOOST_CHECK_THROW(lexical_cast<char>(cv), bad_lexical_cast);
  65     BOOST_CHECK_THROW(lexical_cast<unsigned char>(cv), bad_lexical_cast);
  66     BOOST_CHECK_THROW(lexical_cast<signed char>(cv), bad_lexical_cast);
  67
  68     const boost::iterator_range<const char*> ccv;
  69     do_test_on_empty_input(ccv);
  70     BOOST_CHECK_EQUAL(lexical_cast<std::string>(ccv), std::string());
  71     BOOST_CHECK_THROW(lexical_cast<char>(ccv), bad_lexical_cast);
  72     BOOST_CHECK_THROW(lexical_cast<unsigned char>(ccv), bad_lexical_cast);
  73     BOOST_CHECK_THROW(lexical_cast<signed char>(ccv), bad_lexical_cast);
  74 }
  75
  76 void test_empty_string()
  77 {
  78     std::string v;
  79     do_test_on_empty_input(v);
  80     BOOST_CHECK_THROW(lexical_cast<char>(v), bad_lexical_cast);
  81     BOOST_CHECK_THROW(lexical_cast<unsigned char>(v), bad_lexical_cast);
  82     BOOST_CHECK_THROW(lexical_cast<signed char>(v), bad_lexical_cast);
  83
  84 #ifndef BOOST_LCAST_NO_WCHAR_T
  85     std::wstring vw;
  86     do_test_on_empty_input(vw);
  87     BOOST_CHECK_THROW(lexical_cast<wchar_t>(vw), bad_lexical_cast);
  88 #endif
  89
  90 // Currently, no compiler and STL library fully support char16_t and char32_t
  91 //#ifndef BOOST_NO_CXX11_CHAR16_T
  92 //    std::basic_string<char16_t> v16w;
  93 //    do_test_on_empty_input(v16w);
  94 //    BOOST_CHECK_THROW(lexical_cast<char16_t>(v16w), bad_lexical_cast);
  95 //#endif
  96 //#ifndef BOOST_NO_CXX11_CHAR32_T
  97 //    std::basic_string<char32_t> v32w;
  98 //    do_test_on_empty_input(v32w);
  99 //    BOOST_CHECK_THROW(lexical_cast<char32_t>(v32w), bad_lexical_cast);
 100 //#endif
 101 }
 102
 103 void test_empty_user_class()
 104 {
 105     EscapeStruct v("");
 106     do_test_on_empty_input(v);
 107     BOOST_CHECK_THROW(lexical_cast<char>(v), bad_lexical_cast);
 108     BOOST_CHECK_THROW(lexical_cast<unsigned char>(v), bad_lexical_cast);
 109     BOOST_CHECK_THROW(lexical_cast<signed char>(v), bad_lexical_cast);
 110 }
 111
 112 namespace std {
 113 inline std::ostream & operator<<(std::ostream & out, const std::vector<long> & v)
 114 {
 115     std::ostream_iterator<long> it(out);
 116     std::copy(v.begin(), v.end(), it);
 117     BOOST_CHECK(out);
 118     return out;
 119 }
 120 }
 121
 122 void test_empty_vector()
 123 {
 124     std::vector<long> v;
 125     do_test_on_empty_input(v);
 126     BOOST_CHECK_THROW(lexical_cast<char>(v), bad_lexical_cast);
 127     BOOST_CHECK_THROW(lexical_cast<unsigned char>(v), bad_lexical_cast);
 128     BOOST_CHECK_THROW(lexical_cast<signed char>(v), bad_lexical_cast);
 129 }
 130
 131
 132 struct my_string {
 133     friend std::ostream &operator<<(std::ostream& sout, my_string const&/* st*/) {
 134             return sout << "";
 135     }
 136 };
 137
 138 void test_empty_zero_terminated_string()
 139 {
 140     my_string st;
 141     BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(st), std::string());;
 142 }
 143
 144 unit_test::test_suite *init_unit_test_suite(int, char *[])
 145 {
 146     unit_test::test_suite *suite =
 147         BOOST_TEST_SUITE("lexical_cast. Empty input unit test");
 148     suite->add(BOOST_TEST_CASE(&test_empty_iterator_range));
 149     suite->add(BOOST_TEST_CASE(&test_empty_string));
 150     suite->add(BOOST_TEST_CASE(&test_empty_user_class));
 151     suite->add(BOOST_TEST_CASE(&test_empty_vector));
 152     suite->add(BOOST_TEST_CASE(&test_empty_zero_terminated_string));
 153
 154     return suite;
 155 }