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added coerce

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This commit is contained in:
Vladimir Batov
2014-06-24 12:22:05 +10:00
parent 6acc64100b
commit 78ea5912ef
9 changed files with 153 additions and 57 deletions
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47
test/stream.cpp
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@@ -13,6 +13,7 @@ namespace arg = boost::cnv::parameter;
//[stream_using
using std::string;
using std::wstring;
using boost::convert;
//]
static
@@ -192,4 +193,50 @@ test::cnv::stream()
test_skipws();
test_manipulators();
test_locale();
boost::cnv::cstream ccnv; // std::stringstream-based char converter
boost::cnv::wstream wcnv; // std::stringstream-based wchar_t converter
string const not_int_str = "not an int";
string const std_str = "-11";
char const* const c_str = "-12";
wstring const wstd_str = L"-13";
wchar_t const* const wc_str = L"-14";
char const array_str[] = "-15";
////////////////////////////////////////////////////////////////////////////
// Testing int-to-string conversion with various string
// containers as the fallback values.
////////////////////////////////////////////////////////////////////////////
string s01 = boost::convert< string>(-1, ccnv).value_or(std_str);
string s02 = boost::convert< string>(-2, ccnv).value_or(c_str);
wstring s03 = boost::convert<wstring>(-3, wcnv).value_or(wstd_str);
wstring s04 = boost::convert<wstring>(-4, wcnv).value_or(wc_str);
string s05 = boost::convert< string>(-5, ccnv).value_or(array_str);
boost::optional< string> rs01 = boost::convert< string>(-1, ccnv);
boost::optional< string> rs02 = boost::convert< string>(-2, ccnv);
boost::optional<wstring> rs03 = boost::convert<wstring>(-3, wcnv);
boost::optional<wstring> rs04 = boost::convert<wstring>(-4, wcnv);
boost::optional< string> rs05 = boost::convert< string>(-5, ccnv);
BOOST_TEST(s01 == "-1"); BOOST_TEST(rs01 && rs01.value() == "-1");
BOOST_TEST(s02 == "-2"); BOOST_TEST(rs02 && rs02.value() == "-2");
BOOST_TEST(s03 == L"-3"); BOOST_TEST(rs03 && rs03.value() == L"-3");
BOOST_TEST(s04 == L"-4"); BOOST_TEST(rs04 && rs04.value() == L"-4");
BOOST_TEST(s05 == "-5"); BOOST_TEST(rs05 && rs05.value() == "-5");
////////////////////////////////////////////////////////////////////////////
// Testing int-to-string conversion with no fallback value.
////////////////////////////////////////////////////////////////////////////
string s11 = boost::convert< string>(-1, ccnv).value();
wstring s12 = boost::convert<wstring>(-2, wcnv).value();
boost::optional< string> rs11 = boost::convert< string>(-1, ccnv);
boost::optional<wstring> rs12 = boost::convert<wstring>(-2, wcnv);
BOOST_TEST( s11 == "-1");
BOOST_TEST( s12 == L"-2");
BOOST_TEST(rs11 && rs11.value() == "-1");
BOOST_TEST(rs12 && rs12.value() == L"-2");
}