lexical_cast_iterator_range_test.cpp 8.4 KB

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  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, 2012-2019.
  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. #include <boost/config.hpp>
  11. #if defined(__INTEL_COMPILER)
  12. #pragma warning(disable: 193 383 488 981 1418 1419)
  13. #elif defined(BOOST_MSVC)
  14. #pragma warning(disable: 4097 4100 4121 4127 4146 4244 4245 4511 4512 4701 4800)
  15. #endif
  16. #include <boost/lexical_cast.hpp>
  17. #include <boost/test/unit_test.hpp>
  18. #include <boost/range/iterator_range.hpp>
  19. using namespace boost;
  20. #if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
  21. #define BOOST_LCAST_NO_WCHAR_T
  22. #endif
  23. #if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(_LIBCPP_VERSION) && !defined(BOOST_MSVC)
  24. #define BOOST_LC_RUNU16
  25. #endif
  26. #if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(_LIBCPP_VERSION) && !defined(BOOST_MSVC)
  27. #define BOOST_LC_RUNU32
  28. #endif
  29. struct class_with_user_defined_sream_operators {
  30. int i;
  31. operator int() const {
  32. return i;
  33. }
  34. };
  35. template <class CharT>
  36. inline std::basic_istream<CharT>& operator >> (std::basic_istream<CharT>& istr, class_with_user_defined_sream_operators& rhs)
  37. {
  38. return istr >> rhs.i;
  39. }
  40. template <class RngT>
  41. void do_test_iterator_range_impl(const RngT& rng)
  42. {
  43. BOOST_CHECK_EQUAL(lexical_cast<int>(rng), 1);
  44. BOOST_CHECK_EQUAL(lexical_cast<int>(rng.begin(), rng.size()), 1);
  45. BOOST_CHECK_EQUAL(lexical_cast<unsigned int>(rng), 1u);
  46. BOOST_CHECK_EQUAL(lexical_cast<unsigned int>(rng.begin(), rng.size()), 1u);
  47. BOOST_CHECK_EQUAL(lexical_cast<short>(rng), 1);
  48. BOOST_CHECK_EQUAL(lexical_cast<short>(rng.begin(), rng.size()), 1);
  49. BOOST_CHECK_EQUAL(lexical_cast<unsigned short>(rng), 1u);
  50. BOOST_CHECK_EQUAL(lexical_cast<unsigned short>(rng.begin(), rng.size()), 1u);
  51. BOOST_CHECK_EQUAL(lexical_cast<long int>(rng), 1);
  52. BOOST_CHECK_EQUAL(lexical_cast<long int>(rng.begin(), rng.size()), 1);
  53. BOOST_CHECK_EQUAL(lexical_cast<unsigned long int>(rng), 1u);
  54. BOOST_CHECK_EQUAL(lexical_cast<unsigned long int>(rng.begin(), rng.size()), 1u);
  55. #ifdef BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES
  56. BOOST_CHECK_EQUAL(lexical_cast<float>(rng), 1.0f);
  57. BOOST_CHECK_EQUAL(lexical_cast<float>(rng.begin(), rng.size()), 1.0f);
  58. BOOST_CHECK_EQUAL(lexical_cast<double>(rng), 1.0);
  59. BOOST_CHECK_EQUAL(lexical_cast<double>(rng.begin(), rng.size()), 1.0);
  60. #ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
  61. BOOST_CHECK_EQUAL(lexical_cast<long double>(rng), 1.0L);
  62. BOOST_CHECK_EQUAL(lexical_cast<long double>(rng.begin(), rng.size()), 1.0L);
  63. #endif
  64. BOOST_CHECK_EQUAL(lexical_cast<class_with_user_defined_sream_operators>(rng), 1);
  65. #endif
  66. #if defined(BOOST_HAS_LONG_LONG)
  67. BOOST_CHECK_EQUAL(lexical_cast<boost::ulong_long_type>(rng), 1u);
  68. BOOST_CHECK_EQUAL(lexical_cast<boost::ulong_long_type>(rng.begin(), rng.size()), 1u);
  69. BOOST_CHECK_EQUAL(lexical_cast<boost::long_long_type>(rng), 1);
  70. BOOST_CHECK_EQUAL(lexical_cast<boost::long_long_type>(rng.begin(), rng.size()), 1);
  71. #elif defined(BOOST_HAS_MS_INT64)
  72. BOOST_CHECK_EQUAL(lexical_cast<unsigned __int64>(rng), 1u);
  73. BOOST_CHECK_EQUAL(lexical_cast<unsigned __int64>(rng.begin(), rng.size()), 1u);
  74. BOOST_CHECK_EQUAL(lexical_cast<__int64>(rng), 1);
  75. BOOST_CHECK_EQUAL(lexical_cast<__int64>(rng.begin(), rng.size()), 1);
  76. #endif
  77. }
  78. template <class CharT>
  79. void test_it_range_using_any_chars(CharT* one, CharT* eleven)
  80. {
  81. typedef CharT test_char_type;
  82. // Zero terminated
  83. iterator_range<test_char_type*> rng1(one, one + 1);
  84. do_test_iterator_range_impl(rng1);
  85. iterator_range<const test_char_type*> crng1(one, one + 1);
  86. do_test_iterator_range_impl(crng1);
  87. // Non zero terminated
  88. iterator_range<test_char_type*> rng2(eleven, eleven + 1);
  89. do_test_iterator_range_impl(rng2);
  90. iterator_range<const test_char_type*> crng2(eleven, eleven + 1);
  91. do_test_iterator_range_impl(crng2);
  92. }
  93. template <class CharT>
  94. void test_it_range_using_char(CharT* one, CharT* eleven)
  95. {
  96. typedef CharT test_char_type;
  97. iterator_range<test_char_type*> rng1(one, one + 1);
  98. BOOST_CHECK_EQUAL(lexical_cast<std::string>(rng1), "1");
  99. iterator_range<const test_char_type*> crng1(one, one + 1);
  100. BOOST_CHECK_EQUAL(lexical_cast<std::string>(crng1), "1");
  101. iterator_range<test_char_type*> rng2(eleven, eleven + 1);
  102. BOOST_CHECK_EQUAL(lexical_cast<std::string>(rng2), "1");
  103. iterator_range<const test_char_type*> crng2(eleven, eleven + 1);
  104. BOOST_CHECK_EQUAL(lexical_cast<std::string>(crng2), "1");
  105. BOOST_CHECK_EQUAL(lexical_cast<float>(rng1), 1.0f);
  106. BOOST_CHECK_EQUAL(lexical_cast<double>(rng1), 1.0);
  107. #ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
  108. BOOST_CHECK_EQUAL(lexical_cast<long double>(rng1), 1.0L);
  109. #endif
  110. BOOST_CHECK_EQUAL(lexical_cast<class_with_user_defined_sream_operators>(rng1), 1);
  111. BOOST_CHECK_EQUAL(lexical_cast<float>(crng2), 1.0f);
  112. BOOST_CHECK_EQUAL(lexical_cast<double>(crng2), 1.0);
  113. #ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
  114. BOOST_CHECK_EQUAL(lexical_cast<long double>(crng2), 1.0L);
  115. #endif
  116. BOOST_CHECK_EQUAL(lexical_cast<class_with_user_defined_sream_operators>(crng2), 1);
  117. #ifndef BOOST_LCAST_NO_WCHAR_T
  118. BOOST_CHECK(lexical_cast<std::wstring>(rng1) == L"1");
  119. BOOST_CHECK(lexical_cast<std::wstring>(crng1) == L"1");
  120. BOOST_CHECK(lexical_cast<std::wstring>(rng2) == L"1");
  121. BOOST_CHECK(lexical_cast<std::wstring>(crng2) == L"1");
  122. #endif
  123. #if defined(BOOST_LC_RUNU16) && defined(BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES)
  124. typedef std::basic_string<char16_t> my_char16_string;
  125. BOOST_CHECK(lexical_cast<my_char16_string>(rng1) == u"1");
  126. BOOST_CHECK(lexical_cast<my_char16_string>(crng1) == u"1");
  127. BOOST_CHECK(lexical_cast<my_char16_string>(rng2) == u"1");
  128. BOOST_CHECK(lexical_cast<my_char16_string>(crng2) == u"1");
  129. #endif
  130. #if defined(BOOST_LC_RUNU32) && defined(BOOST_STL_SUPPORTS_NEW_UNICODE_LOCALES)
  131. typedef std::basic_string<char32_t> my_char32_string;
  132. BOOST_CHECK(lexical_cast<my_char32_string>(rng1) == U"1");
  133. BOOST_CHECK(lexical_cast<my_char32_string>(crng1) == U"1");
  134. BOOST_CHECK(lexical_cast<my_char32_string>(rng2) == U"1");
  135. BOOST_CHECK(lexical_cast<my_char32_string>(crng2) == U"1");
  136. #endif
  137. }
  138. void test_char_iterator_ranges()
  139. {
  140. typedef char test_char_type;
  141. test_char_type data1[] = "1";
  142. test_char_type data2[] = "11";
  143. test_it_range_using_any_chars(data1, data2);
  144. test_it_range_using_char(data1, data2);
  145. }
  146. void test_unsigned_char_iterator_ranges()
  147. {
  148. typedef unsigned char test_char_type;
  149. test_char_type data1[] = "1";
  150. test_char_type data2[] = "11";
  151. test_it_range_using_any_chars(data1, data2);
  152. test_it_range_using_char(data1, data2);
  153. }
  154. void test_signed_char_iterator_ranges()
  155. {
  156. typedef signed char test_char_type;
  157. test_char_type data1[] = "1";
  158. test_char_type data2[] = "11";
  159. test_it_range_using_any_chars(data1, data2);
  160. test_it_range_using_char(data1, data2);
  161. }
  162. void test_wchar_iterator_ranges()
  163. {
  164. #ifndef BOOST_LCAST_NO_WCHAR_T
  165. typedef wchar_t test_char_type;
  166. test_char_type data1[] = L"1";
  167. test_char_type data2[] = L"11";
  168. test_it_range_using_any_chars(data1, data2);
  169. #endif
  170. BOOST_CHECK(true);
  171. }
  172. void test_char16_iterator_ranges()
  173. {
  174. #if defined(BOOST_LC_RUNU16)
  175. typedef char16_t test_char_type;
  176. test_char_type data1[] = u"1";
  177. test_char_type data2[] = u"11";
  178. test_it_range_using_any_chars(data1, data2);
  179. #endif
  180. BOOST_CHECK(true);
  181. }
  182. void test_char32_iterator_ranges()
  183. {
  184. #if defined(BOOST_LC_RUNU32)
  185. typedef char32_t test_char_type;
  186. test_char_type data1[] = U"1";
  187. test_char_type data2[] = U"11";
  188. test_it_range_using_any_chars(data1, data2);
  189. #endif
  190. BOOST_CHECK(true);
  191. }
  192. unit_test::test_suite *init_unit_test_suite(int, char *[])
  193. {
  194. unit_test::test_suite *suite = BOOST_TEST_SUITE("lexical_cast. Testing conversions using iterator_range<>");
  195. suite->add(BOOST_TEST_CASE(&test_char_iterator_ranges));
  196. suite->add(BOOST_TEST_CASE(&test_unsigned_char_iterator_ranges));
  197. suite->add(BOOST_TEST_CASE(&test_signed_char_iterator_ranges));
  198. suite->add(BOOST_TEST_CASE(&test_wchar_iterator_ranges));
  199. suite->add(BOOST_TEST_CASE(&test_char16_iterator_ranges));
  200. suite->add(BOOST_TEST_CASE(&test_char32_iterator_ranges));
  201. return suite;
  202. }