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- // Unit test for boost::lexical_cast.
- //
- // See http://www.boost.org for most recent version, including documentation.
- //
- // Copyright Antony Polukhin, 2011-2019.
- //
- // Distributed under the Boost
- // Software License, Version 1.0. (See accompanying file
- // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
- #include <boost/config.hpp>
- #if defined(__INTEL_COMPILER)
- #pragma warning(disable: 193 383 488 981 1418 1419)
- #elif defined(BOOST_MSVC)
- #pragma warning(disable: 4097 4100 4121 4127 4146 4244 4245 4511 4512 4701 4800)
- #endif
- #include <boost/lexical_cast.hpp>
- #include <boost/test/unit_test.hpp>
- #include <boost/range/iterator_range.hpp>
- using namespace boost;
- #if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
- #define BOOST_LCAST_NO_WCHAR_T
- #endif
- template <class T>
- void do_test_on_empty_input(T& v)
- {
- BOOST_CHECK_THROW(lexical_cast<int>(v), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<float>(v), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<double>(v), bad_lexical_cast);
- #ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
- BOOST_CHECK_THROW(lexical_cast<long double>(v), bad_lexical_cast);
- #endif
- BOOST_CHECK_THROW(lexical_cast<unsigned int>(v), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<unsigned short>(v), bad_lexical_cast);
- #if defined(BOOST_HAS_LONG_LONG)
- BOOST_CHECK_THROW(lexical_cast<boost::ulong_long_type>(v), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<boost::long_long_type>(v), bad_lexical_cast);
- #elif defined(BOOST_HAS_MS_INT64)
- BOOST_CHECK_THROW(lexical_cast<unsigned __int64>(v), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<__int64>(v), bad_lexical_cast);
- #endif
- }
- void test_empty_iterator_range()
- {
- boost::iterator_range<char*> v;
- do_test_on_empty_input(v);
- BOOST_CHECK_EQUAL(lexical_cast<std::string>(v), std::string());
- BOOST_CHECK_THROW(lexical_cast<char>(v), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<unsigned char>(v), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<signed char>(v), bad_lexical_cast);
- boost::iterator_range<const char*> cv;
- do_test_on_empty_input(cv);
- BOOST_CHECK_EQUAL(lexical_cast<std::string>(cv), std::string());
- BOOST_CHECK_THROW(lexical_cast<char>(cv), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<unsigned char>(cv), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<signed char>(cv), bad_lexical_cast);
- const boost::iterator_range<const char*> ccv;
- do_test_on_empty_input(ccv);
- BOOST_CHECK_EQUAL(lexical_cast<std::string>(ccv), std::string());
- BOOST_CHECK_THROW(lexical_cast<char>(ccv), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<unsigned char>(ccv), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<signed char>(ccv), bad_lexical_cast);
- }
- void test_empty_string()
- {
- std::string v;
- do_test_on_empty_input(v);
- BOOST_CHECK_THROW(lexical_cast<char>(v), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<unsigned char>(v), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<signed char>(v), bad_lexical_cast);
- #ifndef BOOST_LCAST_NO_WCHAR_T
- std::wstring vw;
- do_test_on_empty_input(vw);
- BOOST_CHECK_THROW(lexical_cast<wchar_t>(vw), bad_lexical_cast);
- #endif
- // Currently, no compiler and STL library fully support char16_t and char32_t
- //#ifndef BOOST_NO_CXX11_CHAR16_T
- // std::basic_string<char16_t> v16w;
- // do_test_on_empty_input(v16w);
- // BOOST_CHECK_THROW(lexical_cast<char16_t>(v16w), bad_lexical_cast);
- //#endif
- //#ifndef BOOST_NO_CXX11_CHAR32_T
- // std::basic_string<char32_t> v32w;
- // do_test_on_empty_input(v32w);
- // BOOST_CHECK_THROW(lexical_cast<char32_t>(v32w), bad_lexical_cast);
- //#endif
- }
- struct Escape
- {
- Escape(const std::string& s)
- : str_(s)
- {}
- std::string str_;
- };
- inline std::ostream& operator<< (std::ostream& o, const Escape& rhs)
- {
- return o << rhs.str_;
- }
- void test_empty_user_class()
- {
- Escape v("");
- do_test_on_empty_input(v);
- BOOST_CHECK_THROW(lexical_cast<char>(v), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<unsigned char>(v), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<signed char>(v), bad_lexical_cast);
- }
- namespace std {
- inline std::ostream & operator<<(std::ostream & out, const std::vector<long> & v)
- {
- std::ostream_iterator<long> it(out);
- std::copy(v.begin(), v.end(), it);
- assert(out);
- return out;
- }
- }
- void test_empty_vector()
- {
- std::vector<long> v;
- do_test_on_empty_input(v);
- BOOST_CHECK_THROW(lexical_cast<char>(v), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<unsigned char>(v), bad_lexical_cast);
- BOOST_CHECK_THROW(lexical_cast<signed char>(v), bad_lexical_cast);
- }
- struct my_string {
- friend std::ostream &operator<<(std::ostream& sout, my_string const&/* st*/) {
- return sout << "";
- }
- };
- void test_empty_zero_terminated_string()
- {
- my_string st;
- BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(st), std::string());;
- }
- unit_test::test_suite *init_unit_test_suite(int, char *[])
- {
- unit_test::test_suite *suite =
- BOOST_TEST_SUITE("lexical_cast. Empty input unit test");
- suite->add(BOOST_TEST_CASE(&test_empty_iterator_range));
- suite->add(BOOST_TEST_CASE(&test_empty_string));
- suite->add(BOOST_TEST_CASE(&test_empty_user_class));
- suite->add(BOOST_TEST_CASE(&test_empty_vector));
- suite->add(BOOST_TEST_CASE(&test_empty_zero_terminated_string));
- return suite;
- }
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