diff options
Diffstat (limited to 'src/boost/libs/hana/test/experimental/view/transformed/is_empty.cpp')
-rw-r--r-- | src/boost/libs/hana/test/experimental/view/transformed/is_empty.cpp | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/experimental/view/transformed/is_empty.cpp b/src/boost/libs/hana/test/experimental/view/transformed/is_empty.cpp new file mode 100644 index 000000000..aafec8ab5 --- /dev/null +++ b/src/boost/libs/hana/test/experimental/view/transformed/is_empty.cpp @@ -0,0 +1,36 @@ +// 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/experimental/view.hpp> +#include <boost/hana/is_empty.hpp> +#include <boost/hana/not.hpp> + +#include <support/seq.hpp> +namespace hana = boost::hana; + + +struct undefined { }; + +int main() { + auto container = ::seq; + + { + auto xs = container(); + auto tr = hana::experimental::transformed(xs, undefined{}); + BOOST_HANA_CONSTANT_CHECK(hana::is_empty(tr)); + } + + { + auto xs = container(undefined{}); + auto tr = hana::experimental::transformed(xs, undefined{}); + BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(tr))); + } + + { + auto xs = container(undefined{}, undefined{}); + auto tr = hana::experimental::transformed(xs, undefined{}); + BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(tr))); + } +} |