mirror of
https://github.com/boostorg/hana.git
synced 2026-02-20 02:42:14 +00:00
62 lines
2.3 KiB
C++
62 lines
2.3 KiB
C++
/*
|
|
* Copyright Louis Dionne 2014
|
|
* Distributed under the Boost Software License, Version 1.0.
|
|
* (See accompanying file LICENSE.md or copy at
|
|
* http://www.boost.org/LICENSE_1_0.txt)
|
|
*/
|
|
|
|
#include <boost/hana/iterable.hpp>
|
|
|
|
#include <boost/hana/detail/static_assert.hpp>
|
|
#include <boost/hana/integral.hpp>
|
|
#include <boost/hana/list.hpp>
|
|
using namespace boost::hana;
|
|
|
|
|
|
constexpr auto iterable = list; // minimal iterable
|
|
|
|
void test_at() {
|
|
BOOST_HANA_STATIC_ASSERT(at(int_<0>, iterable(int_<0>)) == int_<0>);
|
|
|
|
BOOST_HANA_STATIC_ASSERT(at(int_<0>, iterable(int_<0>, int_<1>)) == int_<0>);
|
|
BOOST_HANA_STATIC_ASSERT(at(int_<1>, iterable(int_<0>, int_<1>)) == int_<1>);
|
|
|
|
BOOST_HANA_STATIC_ASSERT(at(int_<0>, iterable(int_<0>, int_<1>, int_<2>)) == int_<0>);
|
|
BOOST_HANA_STATIC_ASSERT(at(int_<1>, iterable(int_<0>, int_<1>, int_<2>)) == int_<1>);
|
|
BOOST_HANA_STATIC_ASSERT(at(int_<2>, iterable(int_<0>, int_<1>, int_<2>)) == int_<2>);
|
|
}
|
|
|
|
void test_last() {
|
|
BOOST_HANA_STATIC_ASSERT(last(iterable(int_<0>)) == int_<0>);
|
|
BOOST_HANA_STATIC_ASSERT(last(iterable(int_<0>, int_<1>)) == int_<1>);
|
|
BOOST_HANA_STATIC_ASSERT(last(iterable(int_<0>, int_<1>, int_<2>)) == int_<2>);
|
|
}
|
|
|
|
void test_length() {
|
|
BOOST_HANA_STATIC_ASSERT(length(iterable()) == int_<0>);
|
|
BOOST_HANA_STATIC_ASSERT(length(iterable(int_<0>)) == int_<1>);
|
|
BOOST_HANA_STATIC_ASSERT(length(iterable(int_<0>, int_<1>)) == int_<2>);
|
|
BOOST_HANA_STATIC_ASSERT(length(iterable(int_<0>, int_<1>, int_<2>)) == int_<3>);
|
|
}
|
|
|
|
void test_drop() {
|
|
BOOST_HANA_STATIC_ASSERT(drop(int_<0>, iterable()) == iterable());
|
|
BOOST_HANA_STATIC_ASSERT(drop(int_<1>, iterable()) == iterable());
|
|
BOOST_HANA_STATIC_ASSERT(drop(int_<2>, iterable()) == iterable());
|
|
|
|
BOOST_HANA_STATIC_ASSERT(drop(int_<0>, iterable(int_<0>)) == iterable(int_<0>));
|
|
BOOST_HANA_STATIC_ASSERT(drop(int_<1>, iterable(int_<0>)) == iterable());
|
|
BOOST_HANA_STATIC_ASSERT(drop(int_<2>, iterable(int_<0>)) == iterable());
|
|
|
|
BOOST_HANA_STATIC_ASSERT(drop(int_<0>, iterable(int_<0>, int_<1>)) == iterable(int_<0>, int_<1>));
|
|
BOOST_HANA_STATIC_ASSERT(drop(int_<1>, iterable(int_<0>, int_<1>)) == iterable(int_<1>));
|
|
BOOST_HANA_STATIC_ASSERT(drop(int_<2>, iterable(int_<0>, int_<1>)) == iterable());
|
|
}
|
|
|
|
int main() {
|
|
test_at();
|
|
test_last();
|
|
test_length();
|
|
test_drop();
|
|
}
|