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Add Endian specific lightweight_test.hpp with new macro BOOST_TEST_MEMCMP_EQ that uses std::memcmp(...)==0 to determine equality. Bitwise equality is the standard we want floating point round trips to be held to, since NaN's are then equal.

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This commit is contained in:
Beman
2015-03-05 10:52:28 -05:00
parent 482bcb0855
commit 072b495240
7 changed files with 244 additions and 10 deletions
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6
include/boost/endian/conversion.hpp
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@ -5,8 +5,8 @@
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
#ifndef BOOST_ENDIAN_CONVERTERS_HPP
#define BOOST_ENDIAN_CONVERTERS_HPP
#ifndef BOOST_ENDIAN_CONVERSION_HPP
#define BOOST_ENDIAN_CONVERSION_HPP
#include <boost/config.hpp>
#include <boost/predef/detail/endian_compat.h>
@ -505,4 +505,4 @@ namespace endian
} // namespace endian
} // namespace boost
#endif // BOOST_ENDIAN_CONVERTERS_HPP
#endif // BOOST_ENDIAN_CONVERSION_HPP

199
include/boost/endian/detail/lightweight_test.hpp Normal file
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@ -0,0 +1,199 @@
// 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
// 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, class U> inline void test_memcmp_eq_impl(char const * expr1,
char const * expr2, char const * file, int line, char const * function, T const & t,
U const & u)
{
if (sizeof(T) == sizeof(U)
&& std::memcmp(&t, &u, sizeof(T)) == 0)
{
report_errors_remind();
}
else
{
BOOST_LIGHTWEIGHT_TEST_OSTREAM
<< file << "(" << line << "): test 'std::memcmp(" << expr1 << ", " << expr2
<< ") == 0' fails in function '" << function << "': "
<< " with values '" << t << "' and '" << u << "'" << std::endl;
++test_errors();
}
}
} // 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
#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_MEMCMP_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

2
test/buffer_test.cpp
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@ -14,7 +14,7 @@
//#define BOOST_ENDIAN_LOG
#include <boost/endian/buffers.hpp>
#include <boost/detail/lightweight_main.hpp>
#include <boost/detail/lightweight_test.hpp>
#include <boost/core/lightweight_test.hpp>
#include <iostream>
#include <sstream>

2
test/conversion_test.cpp
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@ -11,7 +11,7 @@
#include <boost/endian/conversion.hpp>
#include <boost/detail/lightweight_main.hpp>
#include <boost/detail/lightweight_test.hpp>
#include <boost/core/lightweight_test.hpp>
#include <iostream>
#include <cstring>

2
test/deprecated_test.cpp
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@ -14,7 +14,7 @@
#define BOOST_ENDIAN_DEPRECATED_NAMES
#include <boost/endian/endian.hpp>
#include <boost/detail/lightweight_main.hpp>
#include <boost/detail/lightweight_test.hpp>
#include <boost/core/lightweight_test.hpp>
#include <iostream>
#include <sstream>

41
test/float_test.cpp
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@ -12,9 +12,9 @@
#include <boost/endian/detail/disable_warnings.hpp>
//#define BOOST_ENDIAN_LOG
#include <boost/endian/buffers.hpp>
#include <boost/endian/conversion.hpp>
#include <boost/detail/lightweight_main.hpp>
#include <boost/detail/lightweight_test.hpp>
#include <boost/endian/detail/lightweight_test.hpp>
#include <iostream>
#include <sstream>
@ -23,6 +23,7 @@ using std::cout;
using std::endl;
using std::numeric_limits;
namespace
{
template <class T>
@ -62,6 +63,30 @@ namespace
cout << " denorm_min() " << numeric_limits<T>::denorm_min() << "\n";
}
template <class T>
void round_trip_test(const char* type)
{
BOOST_TEST_MEMCMP_EQ(static_cast<T>(1.0), static_cast<T>(1.0)); // reality check
BOOST_TEST_MEMCMP_EQ(endian_reverse(endian_reverse(numeric_limits<T>::min())),
numeric_limits<T>::min());
BOOST_TEST_MEMCMP_EQ(endian_reverse(endian_reverse(numeric_limits<T>::max())),
numeric_limits<T>::max());
BOOST_TEST_MEMCMP_EQ(endian_reverse(endian_reverse(numeric_limits<T>::lowest())),
numeric_limits<T>::lowest());
BOOST_TEST_MEMCMP_EQ(endian_reverse(endian_reverse(numeric_limits<T>::epsilon())),
numeric_limits<T>::epsilon());
BOOST_TEST_MEMCMP_EQ(endian_reverse(endian_reverse(numeric_limits<T>::round_error())),
numeric_limits<T>::round_error());
BOOST_TEST_MEMCMP_EQ(endian_reverse(endian_reverse(numeric_limits<T>::infinity())),
numeric_limits<T>::infinity());
BOOST_TEST_MEMCMP_EQ(endian_reverse(endian_reverse(numeric_limits<T>::quiet_NaN())),
numeric_limits<T>::quiet_NaN());
BOOST_TEST_MEMCMP_EQ(endian_reverse(endian_reverse(numeric_limits<T>::signaling_NaN())),
numeric_limits<T>::signaling_NaN());
BOOST_TEST_MEMCMP_EQ(endian_reverse(endian_reverse(numeric_limits<T>::denorm_min())),
numeric_limits<T>::denorm_min());
}
} // unnamed namespace
//--------------------------------------------------------------------------------------//
@ -70,12 +95,22 @@ int cpp_main(int, char *[])
{
cout << "byte swap intrinsics: " BOOST_ENDIAN_INTRINSIC_MSG << endl;
//#define BOOST_ENDIAN_FORCE_ERROR
#ifdef BOOST_ENDIAN_FORCE_ERROR
BOOST_TEST_MEMCMP_EQ(1.0f, 1.0);
BOOST_TEST_MEMCMP_EQ(1.0f, 1.1f);
BOOST_TEST_MEMCMP_EQ(1.0, 1.1);
#endif
report_limits<float>("float");
round_trip_test<float>("float");
report_limits<double>("double");
round_trip_test<double>("double");
cout << "\n done" << endl;
return ::boost::report_errors();
return ::boost::endian::report_errors();
}
#include <boost/endian/detail/disable_warnings_pop.hpp>

2
test/msvc/common.props
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@ -10,7 +10,7 @@
<ClCompile>
<AdditionalIncludeDirectories>..\..\..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<WarningLevel>EnableAllWarnings</WarningLevel>
<PreprocessorDefinitions>BOOST_ALL_DYN_LINK;_UNICODE;UNICODE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<PreprocessorDefinitions>BOOST_LIGHTWEIGHT_TEST_OSTREAM=std::cout;BOOST_ALL_DYN_LINK;_UNICODE;UNICODE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
</ClCompile>
<PostBuildEvent>
<Message>Executing test $(TargetName).exe...</Message>