ceph/src/boost/libs/hana/test/string/drop_front_exactly.cpp

   1 // Copyright Louis Dionne 2013-2017
   2 // Distributed under the Boost Software License, Version 1.0.
   3 // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
   4
   5 #include <boost/hana/assert.hpp>
   6 #include <boost/hana/drop_front_exactly.hpp>
   7 #include <boost/hana/equal.hpp>
   8 #include <boost/hana/integral_constant.hpp>
   9 #include <boost/hana/string.hpp>
  10 namespace hana = boost::hana;
  11
  12
  13 int main() {
  14     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  15         hana::drop_front_exactly(BOOST_HANA_STRING("a")),
  16         BOOST_HANA_STRING("")
  17     ));
  18
  19     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  20         hana::drop_front_exactly(BOOST_HANA_STRING("ab")),
  21         BOOST_HANA_STRING("b")
  22     ));
  23
  24     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  25         hana::drop_front_exactly(BOOST_HANA_STRING("abc")),
  26         BOOST_HANA_STRING("bc")
  27     ));
  28
  29     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  30         hana::drop_front_exactly(BOOST_HANA_STRING("abcdefghijk")),
  31         BOOST_HANA_STRING("bcdefghijk")
  32     ));
  33
  34
  35     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  36         hana::drop_front_exactly(BOOST_HANA_STRING("abc"), hana::size_c<2>),
  37         BOOST_HANA_STRING("c")
  38     ));
  39
  40     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  41         hana::drop_front_exactly(BOOST_HANA_STRING("abcdefghijk"), hana::size_c<3>),
  42         BOOST_HANA_STRING("defghijk")
  43     ));
  44 }