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61 lines
2.8 KiB
C++
61 lines
2.8 KiB
C++
// Boost.Convert test and usage example
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// Copyright (c) 2009-2014 Vladimir Batov.
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. See http://www.boost.org/LICENSE_1_0.txt.
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#include "./test.hpp"
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using std::string;
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using std::wstring;
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void
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test::cnv::int_to_string()
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{
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boost::cnv::cstream ccnv; // std::stringstream-based char converter
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boost::cnv::wstream wcnv; // std::stringstream-based wchar_t converter
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string const not_int_str = "not an int";
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string const std_str = "-11";
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char const* const c_str = "-12";
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wstring const wstd_str = L"-13";
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wchar_t const* const wc_str = L"-14";
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char const array_str[] = "-15";
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////////////////////////////////////////////////////////////////////////////
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// Testing int-to-string conversion with various string
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// containers as the fallback values.
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////////////////////////////////////////////////////////////////////////////
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string s01 = boost::convert< string>(-1, ccnv).value_or(std_str);
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string s02 = boost::convert< string>(-2, ccnv).value_or(c_str);
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wstring s03 = boost::convert<wstring>(-3, wcnv).value_or(wstd_str);
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wstring s04 = boost::convert<wstring>(-4, wcnv).value_or(wc_str);
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string s05 = boost::convert< string>(-5, ccnv).value_or(array_str);
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boost::optional< string> rs01 = boost::convert< string>(-1, ccnv);
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boost::optional< string> rs02 = boost::convert< string>(-2, ccnv);
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boost::optional<wstring> rs03 = boost::convert<wstring>(-3, wcnv);
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boost::optional<wstring> rs04 = boost::convert<wstring>(-4, wcnv);
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boost::optional< string> rs05 = boost::convert< string>(-5, ccnv);
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BOOST_TEST(s01 == "-1"); BOOST_TEST(rs01 && rs01.value() == "-1");
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BOOST_TEST(s02 == "-2"); BOOST_TEST(rs02 && rs02.value() == "-2");
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BOOST_TEST(s03 == L"-3"); BOOST_TEST(rs03 && rs03.value() == L"-3");
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BOOST_TEST(s04 == L"-4"); BOOST_TEST(rs04 && rs04.value() == L"-4");
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BOOST_TEST(s05 == "-5"); BOOST_TEST(rs05 && rs05.value() == "-5");
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////////////////////////////////////////////////////////////////////////////
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// Testing int-to-string conversion with no fallback value.
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////////////////////////////////////////////////////////////////////////////
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string s11 = boost::convert< string>(-1, ccnv).value();
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wstring s12 = boost::convert<wstring>(-2, wcnv).value();
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boost::optional< string> rs11 = boost::convert< string>(-1, ccnv);
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boost::optional<wstring> rs12 = boost::convert<wstring>(-2, wcnv);
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BOOST_TEST( s11 == "-1");
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BOOST_TEST( s12 == L"-2");
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BOOST_TEST(rs11 && rs11.value() == "-1");
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BOOST_TEST(rs12 && rs12.value() == L"-2");
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}
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