{

NonConstructible();

NonConstructible(NonConstructible const&);

#if (!defined BOOST_NO_CXX11_RVALUE_REFERENCES)

NonConstructible(NonConstructible &&);

#endif

{

boost::optional<NonConstructible> o;

BOOST_TEST(!o);

BOOST_TEST(o == boost::none);

BOOST_TEST_THROWS(o.value(), boost::bad_optional_access);

{

explicit Guard(int) {}

Guard();

Guard(Guard const&);

#if (!defined BOOST_NO_CXX11_RVALUE_REFERENCES)

Guard(Guard &&);

#endif

{

boost::optional<Guard> o;

o.emplace(1);

BOOST_TEST(o);

BOOST_TEST(o != boost::none);

{

boost::optional<const std::string> o;

o.emplace("cat");

BOOST_TEST(o);

BOOST_TEST(o != boost::none);

BOOST_TEST_EQ(*o, std::string("cat"));

{

test_non_constructible();

test_guard();

test_non_assignable();

return boost::report_errors();

}