exception/test/diagnostic_information_test.cpp

//Copyright (c) 2006-2009 Emil Dotchevski and Reverge Studios, Inc.

//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/exception/diagnostic_information.hpp>
#include <boost/exception/info.hpp>
#include <boost/detail/lightweight_test.hpp>
#include <boost/detail/workaround.hpp>

#if BOOST_WORKAROUND(__CODEGEARC__, BOOST_TESTED_AT(0x610))
struct test_tag1 {};
struct test_tag2 {};
#endif

typedef boost::error_info<struct test_tag1,int> tagged_int1;
typedef boost::error_info<struct test_tag2,int> tagged_int2;

std::string
to_string( tagged_int2 const & x )
    {
    return '[' +boost::error_info_name(x) + "] = " + (x.value()==42 ? "fourty-two" : "bad value");
    }

struct
error1:
    std::exception,
    boost::exception
    {
    char const *
    what() const BOOST_NOEXCEPT_OR_NOTHROW
        {
        return "error1";
        }
    };

struct
error2:
    boost::exception
    {
    };

struct
error3:
    std::exception
    {
    char const *
    what() const BOOST_NOEXCEPT_OR_NOTHROW
        {
        return "error3";
        }
    };

struct
error4:
    std::exception,
    boost::exception
    {
    char const *
    what() const BOOST_NOEXCEPT_OR_NOTHROW
        {
        return diagnostic_information_what(*this);
        }
    };

void
test1( std::string const & di1, std::string const & di2 )
    {
    BOOST_TEST( di1!=di2 );
#ifndef BOOST_NO_RTTI
    BOOST_TEST(di1.find("type:")!=std::string::npos);
    BOOST_TEST(di1.find("error1")!=std::string::npos);
#endif
    BOOST_TEST(di1.find("test_tag1")!=std::string::npos);
    BOOST_TEST(di1.find("test_tag2")!=std::string::npos);
    BOOST_TEST(di1.find("fourty-two")!=std::string::npos);
#ifndef BOOST_NO_RTTI
    BOOST_TEST(di2.find("type:")!=std::string::npos);
    BOOST_TEST(di2.find("error1")!=std::string::npos);
#endif
    BOOST_TEST(di2.find("test_tag1")!=std::string::npos);
    BOOST_TEST(di2.find("test_tag2")!=std::string::npos);
    BOOST_TEST(di2.find("bad value")!=std::string::npos);
    }

void
test2( std::string const & di1, std::string const & di2 )
    {
    BOOST_TEST( di1!=di2 );
    BOOST_TEST(di1.find("test_tag1")!=std::string::npos);
    BOOST_TEST(di1.find("test_tag2")!=std::string::npos);
    BOOST_TEST(di1.find("fourty-two")!=std::string::npos);
    BOOST_TEST(di2.find("test_tag1")!=std::string::npos);
    BOOST_TEST(di2.find("test_tag2")!=std::string::npos);
    BOOST_TEST(di2.find("bad value")!=std::string::npos);
    }

void
test3( std::string const & di )
    {
#ifndef BOOST_NO_RTTI
    BOOST_TEST(di.find("type:")!=std::string::npos);
#endif
    BOOST_TEST(di.find("error3")!=std::string::npos);
    }

void
test4( std::string const & di1, std::string const & di2 )
    {
    BOOST_TEST( di1!=di2 );
#ifndef BOOST_NO_RTTI
    BOOST_TEST(di1.find("type:")!=std::string::npos);
#endif
    BOOST_TEST(di1.find("test_tag1")!=std::string::npos);
    BOOST_TEST(di1.find("test_tag2")!=std::string::npos);
    BOOST_TEST(di1.find("fourty-two")!=std::string::npos);
#ifndef BOOST_NO_RTTI
    BOOST_TEST(di2.find("type:")!=std::string::npos);
#endif
    BOOST_TEST(di2.find("test_tag1")!=std::string::npos);
    BOOST_TEST(di2.find("test_tag2")!=std::string::npos);
    BOOST_TEST(di2.find("bad value")!=std::string::npos);
    }

int
main()
    {
    using namespace boost;
    try
        {
        error1 x; x << tagged_int1(42) << tagged_int2(42);
        BOOST_TEST(x.what()==std::string("error1"));
        throw x;
        }
    catch(
    error1 & x )
        {
        std::string di1=boost::diagnostic_information(x);
        x << tagged_int1(2) << tagged_int2(2);
        std::string di2 = diagnostic_information(x);
        test1(di1,di2);
        }
    try
        {
        error1 x; x << tagged_int1(42) << tagged_int2(42);
        BOOST_TEST(x.what()==std::string("error1"));
        throw x;
        }
    catch(
    error1 & x )
        {
        std::string di1=boost::current_exception_diagnostic_information();
        x << tagged_int1(2) << tagged_int2(2);
        std::string di2 = current_exception_diagnostic_information();
        test1(di1,di2);
        }
    try
        {
        error2 x;
        x << tagged_int1(42) << tagged_int2(42);
        throw x;
        }
    catch(
    error2 & x )
        {
        std::string di1 = diagnostic_information(x);
        x << tagged_int1(2) << tagged_int2(2);
        std::string di2 = diagnostic_information(x);
        test2(di1,di2);
        }
    try
        {
        error2 x;
        x << tagged_int1(42) << tagged_int2(42);
        throw x;
        }
    catch(
    error2 & x )
        {
        std::string di1 = current_exception_diagnostic_information();
        BOOST_TEST(di1==boost::diagnostic_information_what(x));
        x << tagged_int1(2) << tagged_int2(2);
        std::string di2 = current_exception_diagnostic_information();
        BOOST_TEST(di2==boost::diagnostic_information_what(x));
        test2(di1,di2);
        }
    try
        {
        error3 x;
        std::string di=diagnostic_information(x);
        test3(di);
        throw x;
        }
    catch(
    ... )
        {
        std::string di=current_exception_diagnostic_information();
        test3(di);
        }
    try
        {
        throw error4();
        }
    catch(
    error4 & x )
        {
        std::string di1=boost::diagnostic_information(x);
        std::string wh1=x.what();
        BOOST_TEST(wh1==di1);
        }
    try
        {
        error4 x; x << tagged_int1(42) << tagged_int2(42);
        throw x;
        }
    catch(
    error4 & x )
        {
        std::string di1=boost::diagnostic_information(x);
        std::string wh1=x.what();
        BOOST_TEST(wh1==di1);
        x << tagged_int1(2) << tagged_int2(2);
        std::string di2 = diagnostic_information(x);
        std::string wh2=x.what();
        BOOST_TEST(wh2==di2);
        test4(di1,di2);
        }
    try
        {
        error4 x; x << tagged_int1(42) << tagged_int2(42);
        throw x;
        }
    catch(
    error4 & x )
        {
        std::string di1=boost::current_exception_diagnostic_information();
        std::string wh1=x.what();
        BOOST_TEST(wh1==di1);
        x << tagged_int1(2) << tagged_int2(2);
        std::string di2 = current_exception_diagnostic_information();
        std::string wh2=x.what();
        BOOST_TEST(wh2==di2);
        test4(di1,di2);
        }
    return boost::report_errors();
    }