hana/test/string/drop_front_exactly.cpp
2017-01-07 14:14:18 -08:00

45 lines
1.3 KiB
C++

// Copyright Louis Dionne 2013-2017
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
#include <boost/hana/assert.hpp>
#include <boost/hana/drop_front_exactly.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/integral_constant.hpp>
#include <boost/hana/string.hpp>
namespace hana = boost::hana;
int main() {
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::drop_front_exactly(BOOST_HANA_STRING("a")),
BOOST_HANA_STRING("")
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::drop_front_exactly(BOOST_HANA_STRING("ab")),
BOOST_HANA_STRING("b")
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::drop_front_exactly(BOOST_HANA_STRING("abc")),
BOOST_HANA_STRING("bc")
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::drop_front_exactly(BOOST_HANA_STRING("abcdefghijk")),
BOOST_HANA_STRING("bcdefghijk")
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::drop_front_exactly(BOOST_HANA_STRING("abc"), hana::size_c<2>),
BOOST_HANA_STRING("c")
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::drop_front_exactly(BOOST_HANA_STRING("abcdefghijk"), hana::size_c<3>),
BOOST_HANA_STRING("defghijk")
));
}