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/*
* Copyright Andrey Semashev 2013.
* 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)
*/
/*!
* \file string_ref_test_io.cpp
* \author Andrey Semashev
* \date 26.05.2013
*
* \brief This header contains tests for stream operations of \c basic_string_ref.
*/
#include <boost/utility/string_ref.hpp>
#include <iomanip>
#include <sstream>
#include <algorithm>
#include <iterator>
#include <string>
#include <boost/config.hpp>
#include <boost/core/lightweight_test.hpp>
/* Current implementations seem to be missing codecvt facets to convert chars to char16_t and char32_t even though the types are available.
*/
static const char* test_strings[] =
{
"begin",
"abcd",
"end"
};
//! The context with test data for particular character type
template< typename CharT >
struct context
{
typedef CharT char_type;
typedef std::basic_string< char_type > string_type;
typedef std::basic_ostringstream< char_type > ostream_type;
string_type begin, abcd, end;
context()
{
boost::string_ref str = test_strings[0];
std::copy(str.begin(), str.end(), std::back_inserter(begin));
str = test_strings[1];
std::copy(str.begin(), str.end(), std::back_inserter(abcd));
str = test_strings[2];
std::copy(str.begin(), str.end(), std::back_inserter(end));
}
};
// Test regular output
template<class CharT>
void test_string_ref_output()
{
typedef CharT char_type;
typedef std::basic_ostringstream< char_type > ostream_type;
typedef boost::basic_string_ref< char_type > string_ref_type;
context< char_type > ctx;
ostream_type strm;
strm << string_ref_type(ctx.abcd);
BOOST_TEST(strm.str() == ctx.abcd);
}
// Test support for padding
template<class CharT>
void test_padding()
{
typedef CharT char_type;
typedef std::basic_ostringstream< char_type > ostream_type;
typedef boost::basic_string_ref< char_type > string_ref_type;
context< char_type > ctx;
// Test for padding
{
ostream_type strm_ref;
strm_ref << ctx.begin << std::setw(8) << string_ref_type(ctx.abcd) << ctx.end;
ostream_type strm_correct;
strm_correct << ctx.begin << std::setw(8) << ctx.abcd << ctx.end;
BOOST_TEST(strm_ref.str() == strm_correct.str());
}
// Test for long padding
{
ostream_type strm_ref;
strm_ref << ctx.begin << std::setw(100) << string_ref_type(ctx.abcd) << ctx.end;
ostream_type strm_correct;
strm_correct << ctx.begin << std::setw(100) << ctx.abcd << ctx.end;
BOOST_TEST(strm_ref.str() == strm_correct.str());
}
// Test that short width does not truncate the string
{
ostream_type strm_ref;
strm_ref << ctx.begin << std::setw(1) << string_ref_type(ctx.abcd) << ctx.end;
ostream_type strm_correct;
strm_correct << ctx.begin << std::setw(1) << ctx.abcd << ctx.end;
BOOST_TEST(strm_ref.str() == strm_correct.str());
}
}
// Test support for padding fill
template<class CharT>
void test_padding_fill()
{
typedef CharT char_type;
typedef std::basic_ostringstream< char_type > ostream_type;
typedef boost::basic_string_ref< char_type > string_ref_type;
context< char_type > ctx;
ostream_type strm_ref;
strm_ref << ctx.begin << std::setfill(static_cast< char_type >('x')) << std::setw(8) << string_ref_type(ctx.abcd) << ctx.end;
ostream_type strm_correct;
strm_correct << ctx.begin << std::setfill(static_cast< char_type >('x')) << std::setw(8) << ctx.abcd << ctx.end;
BOOST_TEST(strm_ref.str() == strm_correct.str());
}
// Test support for alignment
template<class CharT>
void test_alignment()
{
typedef CharT char_type;
typedef std::basic_ostringstream< char_type > ostream_type;
typedef boost::basic_string_ref< char_type > string_ref_type;
context< char_type > ctx;
// Left alignment
{
ostream_type strm_ref;
strm_ref << ctx.begin << std::left << std::setw(8) << string_ref_type(ctx.abcd) << ctx.end;
ostream_type strm_correct;
strm_correct << ctx.begin << std::left << std::setw(8) << ctx.abcd << ctx.end;
BOOST_TEST(strm_ref.str() == strm_correct.str());
}
// Right alignment
{
ostream_type strm_ref;
strm_ref << ctx.begin << std::right << std::setw(8) << string_ref_type(ctx.abcd) << ctx.end;
ostream_type strm_correct;
strm_correct << ctx.begin << std::right << std::setw(8) << ctx.abcd << ctx.end;
BOOST_TEST(strm_ref.str() == strm_correct.str());
}
}
template<class CharT>
void test()
{
test_string_ref_output<CharT>();
test_padding<CharT>();
test_padding_fill<CharT>();
test_alignment<CharT>();
}
int main()
{
test<char>();
test<wchar_t>();
return boost::report_errors();
}
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