diff options
Diffstat (limited to 'src/boost/libs/hana/test/tuple/special.is_empty.cpp')
| -rw-r--r-- | src/boost/libs/hana/test/tuple/special.is_empty.cpp | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/tuple/special.is_empty.cpp b/src/boost/libs/hana/test/tuple/special.is_empty.cpp new file mode 100644 index 000000000..3bf0cf780 --- /dev/null +++ b/src/boost/libs/hana/test/tuple/special.is_empty.cpp @@ -0,0 +1,28 @@ +// 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/is_empty.hpp> +#include <boost/hana/not.hpp> +#include <boost/hana/tuple.hpp> +namespace hana = boost::hana; + + +struct x0; +struct x1; +struct x2; + +int main() { + // tuple_t + BOOST_HANA_CONSTANT_CHECK(hana::is_empty(hana::tuple_t<>)); + BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(hana::tuple_t<x0>))); + BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(hana::tuple_t<x0, x1>))); + BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(hana::tuple_t<x0, x1, x2>))); + + // tuple_c + BOOST_HANA_CONSTANT_CHECK(hana::is_empty(hana::tuple_c<int>)); + BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(hana::tuple_c<int, 0>))); + BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(hana::tuple_c<int, 0, 1>))); + BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(hana::tuple_c<int, 0, 1, 2>))); +} |