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// Copyright Douglas Gregor 2002-2004. Use, modification and
// distribution is subject to 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/logic/tribool.hpp>
#include <boost/logic/tribool_io.hpp>
#include <boost/test/minimal.hpp>
#include <sstream>
#include <string>
#include <iostream>
#include <ios> // for std::boolalpha
#ifndef BOOST_NO_STD_LOCALE
# include <locale>
#endif
int test_main(int, char*[])
{
using namespace boost::logic;
tribool x;
// Check tribool output
std::ostringstream out;
// Output false (noboolalpha)
out.str(std::string());
x = false;
out << x;
std::cout << "Output false (noboolalpha): " << out.str() << std::endl;
BOOST_CHECK(out.str() == "0");
// Output true (noboolalpha)
out.str(std::string());
x = true;
out << x;
std::cout << "Output true (noboolalpha): " << out.str() << std::endl;
BOOST_CHECK(out.str() == "1");
// Output indeterminate (noboolalpha)
out.str(std::string());
x = indeterminate;
out << x;
std::cout << "Output indeterminate (noboolalpha): " << out.str()
<< std::endl;
BOOST_CHECK(out.str() == "2");
// Output indeterminate (noboolalpha)
out.str(std::string());
out << indeterminate;
std::cout << "Output indeterminate (noboolalpha): " << out.str()
<< std::endl;
BOOST_CHECK(out.str() == "2");
#ifndef BOOST_NO_STD_LOCALE
const std::numpunct<char>& punct =
BOOST_USE_FACET(std::numpunct<char>, out.getloc());
// Output false (boolalpha)
out.str(std::string());
x = false;
out << std::boolalpha << x;
std::cout << "Output false (boolalpha): " << out.str() << std::endl;
BOOST_CHECK(out.str() == punct.falsename());
// Output true (boolalpha)
out.str(std::string());
x = true;
out << std::boolalpha << x;
std::cout << "Output true (boolalpha): " << out.str() << std::endl;
BOOST_CHECK(out.str() == punct.truename());
// Output indeterminate (boolalpha - default name)
out.str(std::string());
x = indeterminate;
out << std::boolalpha << x;
std::cout << "Output indeterminate (boolalpha - default name): " << out.str()
<< std::endl;
BOOST_CHECK(out.str() == "indeterminate");
// Output indeterminate (boolalpha - default name)
out.str(std::string());
out << std::boolalpha << indeterminate;
std::cout << "Output indeterminate (boolalpha - default name): " << out.str()
<< std::endl;
BOOST_CHECK(out.str() == "indeterminate");
# if BOOST_WORKAROUND(BOOST_DINKUMWARE_STDLIB, == 1)
// No template constructors, so we can't build the test locale
# else
// Give indeterminate a new name, and output it via boolalpha
std::locale global;
std::locale test_locale(global, new indeterminate_name<char>("maybe"));
out.imbue(test_locale);
out.str(std::string());
out << std::boolalpha << x;
std::cout << "Output indeterminate (boolalpha - \"maybe\"): " << out.str()
<< std::endl;
BOOST_CHECK(out.str() == "maybe");
# endif
#endif // ! BOOST_NO_STD_LOCALE
// Checking tribool input
// Input false (noboolalpha)
{
std::istringstream in("0");
std::cout << "Input \"0\" (checks for false)" << std::endl;
in >> x;
BOOST_CHECK(x == false);
}
// Input true (noboolalpha)
{
std::istringstream in("1");
std::cout << "Input \"1\" (checks for true)" << std::endl;
in >> x;
BOOST_CHECK(x == true);
}
// Input false (noboolalpha)
{
std::istringstream in("2");
std::cout << "Input \"2\" (checks for indeterminate)" << std::endl;
in >> x;
BOOST_CHECK(indeterminate(x));
}
// Input bad number (noboolalpha)
{
std::istringstream in("3");
std::cout << "Input \"3\" (checks for failure)" << std::endl;
BOOST_CHECK(!(in >> x));
}
// Input false (boolalpha)
{
std::istringstream in("false");
std::cout << "Input \"false\" (checks for false)" << std::endl;
in >> std::boolalpha >> x;
BOOST_CHECK(x == false);
}
// Input true (boolalpha)
{
std::istringstream in("true");
std::cout << "Input \"true\" (checks for true)" << std::endl;
in >> std::boolalpha >> x;
BOOST_CHECK(x == true);
}
// Input indeterminate (boolalpha)
{
std::istringstream in("indeterminate");
std::cout << "Input \"indeterminate\" (checks for indeterminate)"
<< std::endl;
in >> std::boolalpha >> x;
BOOST_CHECK(indeterminate(x));
}
// Input bad string (boolalpha)
{
std::istringstream in("bad");
std::cout << "Input \"bad\" (checks for failure)"
<< std::endl;
BOOST_CHECK(!(in >> std::boolalpha >> x));
}
#if BOOST_WORKAROUND(BOOST_DINKUMWARE_STDLIB, == 1)
// No template constructors, so we can't build the test locale
#elif !defined(BOOST_NO_STD_LOCALE)
// Input indeterminate named "maybe" (boolalpha)
{
std::istringstream in("maybe");
in.imbue(test_locale);
std::cout << "Input \"maybe\" (checks for indeterminate, uses locales)"
<< std::endl;
in >> std::boolalpha >> x;
BOOST_CHECK(indeterminate(x));
}
// Input indeterminate named "true_or_false" (boolalpha)
{
std::locale my_locale(global,
new indeterminate_name<char>("true_or_false"));
std::istringstream in("true_or_false");
in.imbue(my_locale);
std::cout << "Input \"true_or_false\" (checks for indeterminate)"
<< std::endl;
in >> std::boolalpha >> x;
BOOST_CHECK(indeterminate(x));
}
#endif
return 0;
}
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