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Diffstat (limited to 'boost/endian/detail/lightweight_test.hpp')
| -rw-r--r-- | boost/endian/detail/lightweight_test.hpp | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/boost/endian/detail/lightweight_test.hpp b/boost/endian/detail/lightweight_test.hpp new file mode 100644 index 0000000000..eba315c954 --- /dev/null +++ b/boost/endian/detail/lightweight_test.hpp @@ -0,0 +1,223 @@ +// boost/endian/detail/lightweight_test.hpp --------------------------------------------// + +#ifndef BOOST_ENDIAN_LIGHTWEIGHT_TEST_HPP +#define BOOST_ENDIAN_LIGHTWEIGHT_TEST_HPP + +// MS compatible compilers support #pragma once + +#if defined(_MSC_VER) +# pragma once +#endif + +// +// Copyright (c) 2002, 2009, 2014 Peter Dimov +// Copyright (2) Beman Dawes 2010, 2011, 2015 +// Copyright (3) Ion Gaztanaga 2013 +// +// Distributed under the Boost Software License, Version 1.0. +// See http://www.boost.org/LICENSE_1_0.txt +// + +#include <boost/assert.hpp> +#include <boost/current_function.hpp> +#include <boost/core/no_exceptions_support.hpp> +#include <cstring> // for memcmp +#include <iostream> + +// IDE's like Visual Studio perform better if output goes to std::cout or +// some other stream, so allow user to configure output stream: +#ifndef BOOST_LIGHTWEIGHT_TEST_OSTREAM +# define BOOST_LIGHTWEIGHT_TEST_OSTREAM std::cerr +#endif + +namespace boost +{ +namespace endian +{ +namespace detail +{ + +struct report_errors_reminder +{ + bool called_report_errors_function; + + report_errors_reminder() : called_report_errors_function(false) {} + + ~report_errors_reminder() + { + BOOST_ASSERT(called_report_errors_function); // verify report_errors() was called + } +}; + +inline report_errors_reminder& report_errors_remind() +{ + static report_errors_reminder r; + return r; +} + +inline int & test_errors() +{ + static int x = 0; + report_errors_remind(); + return x; +} + +inline void test_failed_impl(char const * expr, char const * file, int line, char const * function) +{ + BOOST_LIGHTWEIGHT_TEST_OSTREAM + << file << "(" << line << "): test '" << expr << "' failed in function '" + << function << "'" << std::endl; + ++test_errors(); +} + +inline void error_impl(char const * msg, char const * file, int line, char const * function) +{ + BOOST_LIGHTWEIGHT_TEST_OSTREAM + << file << "(" << line << "): " << msg << " in function '" + << function << "'" << std::endl; + ++test_errors(); +} + +inline void throw_failed_impl(char const * excep, char const * file, int line, char const * function) +{ + BOOST_LIGHTWEIGHT_TEST_OSTREAM + << file << "(" << line << "): Exception '" << excep << "' not thrown in function '" + << function << "'" << std::endl; + ++test_errors(); +} + +template<class T, class U> inline void test_eq_impl( char const * expr1, char const * expr2, + char const * file, int line, char const * function, T const & t, U const & u ) +{ + if( t == u ) + { + report_errors_remind(); + } + else + { + BOOST_LIGHTWEIGHT_TEST_OSTREAM + << file << "(" << line << "): test '" << expr1 << " == " << expr2 + << "' failed in function '" << function << "': " + << "'" << t << "' != '" << u << "'" << std::endl; + ++test_errors(); + } +} + +template<class T, class U> inline void test_ne_impl( char const * expr1, char const * expr2, + char const * file, int line, char const * function, T const & t, U const & u ) +{ + if( t != u ) + { + report_errors_remind(); + } + else + { + BOOST_LIGHTWEIGHT_TEST_OSTREAM + << file << "(" << line << "): test '" << expr1 << " != " << expr2 + << "' failed in function '" << function << "': " + << "'" << t << "' == '" << u << "'" << std::endl; + ++test_errors(); + } +} + +template <class T> +std::string to_hex(const T& x) +{ + const char hex[] = { '0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f' }; + std::string tmp; + const unsigned char* p = reinterpret_cast<const unsigned char*>(&x); + const unsigned char* e = p + sizeof(T); + + for (; p < e; ++p) + { + tmp += hex[*p >> 4]; // high-order nibble + tmp += hex[*p & 0x0f]; // low-order nibble + } + return tmp; +} + +template<class T, class U> inline bool test_memcmp_eq_impl(char const * expr1, + char const * expr2, char const * file, int line, char const * function, T const & t, + U const & u) +{ + BOOST_ASSERT(sizeof(T) == sizeof(U)); + if (sizeof(T) == sizeof(U) + && std::memcmp(&t, &u, sizeof(T)) == 0) + { + report_errors_remind(); + return true; + } + else + { + BOOST_LIGHTWEIGHT_TEST_OSTREAM + << file << "(" << line << "): test 'std::memcmp(" << expr1 << ", " << expr2 + << ") == 0' fails in function '" << function << "': " + << " with values '" << to_hex(t) << "' and '" << to_hex(u) << "'" << std::endl; + ++test_errors(); + return false; + } +} + +} // namespace detail + +inline int report_errors() +{ + boost::endian::detail::report_errors_remind().called_report_errors_function = true; + + int errors = boost::endian::detail::test_errors(); + + if( errors == 0 ) + { + BOOST_LIGHTWEIGHT_TEST_OSTREAM + << "No errors detected." << std::endl; + return 0; + } + else + { + BOOST_LIGHTWEIGHT_TEST_OSTREAM + << errors << " error" << (errors == 1? "": "s") << " detected." << std::endl; + return 1; + } +} + +} // namespace endian +} // namespace boost + +////////////////////////////////////////////////////////////////////////////////////////// +// TODO: Should all test macros return bool? See BOOST_TEST_MEM_EQ usage in fp_exaustive_test,cpp +////////////////////////////////////////////////////////////////////////////////////////// + + +#define BOOST_TEST(expr) \ + ((expr)? (void)0: ::boost::endian::detail::test_failed_impl(#expr, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION)) + +#define BOOST_ERROR(msg) \ + ( ::boost::endian::detail::error_impl(msg, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION) ) + +#define BOOST_TEST_EQ(expr1,expr2) \ + ( ::boost::endian::detail::test_eq_impl(#expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) ) +#define BOOST_TEST_NE(expr1,expr2) \ + ( ::boost::endian::detail::test_ne_impl(#expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) ) + +#define BOOST_TEST_MEM_EQ(expr1,expr2) \ + (::boost::endian::detail::test_memcmp_eq_impl(#expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2)) + +#ifndef BOOST_NO_EXCEPTIONS + #define BOOST_TEST_THROWS( EXPR, EXCEP ) \ + try { \ + EXPR; \ + ::boost::detail::throw_failed_impl \ + (#EXCEP, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \ + } \ + catch(EXCEP const&) { \ + } \ + catch(...) { \ + ::boost::detail::throw_failed_impl \ + (#EXCEP, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \ + } \ + // +#else + #define BOOST_TEST_THROWS( EXPR, EXCEP ) +#endif + +#endif // #ifndef BOOST_ENDIAN_LIGHTWEIGHT_TEST_HPP |