diff options
Diffstat (limited to 'src/boost/libs/hana/test/detail/first_unsatisfied_index.cpp')
-rw-r--r-- | src/boost/libs/hana/test/detail/first_unsatisfied_index.cpp | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/detail/first_unsatisfied_index.cpp b/src/boost/libs/hana/test/detail/first_unsatisfied_index.cpp new file mode 100644 index 000000000..dd2eff55d --- /dev/null +++ b/src/boost/libs/hana/test/detail/first_unsatisfied_index.cpp @@ -0,0 +1,47 @@ +// 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/detail/first_unsatisfied_index.hpp> + +#include <boost/hana/not_equal.hpp> +#include <laws/base.hpp> + +#include <type_traits> +namespace hana = boost::hana; +using hana::test::ct_eq; + + +struct poison { + poison() = default; + poison(poison const&) = delete; +}; + +int main() { + auto predicate = [](auto x) { + static_assert(!std::is_same<poison, decltype(x)>::value, ""); + return hana::not_equal(x, ct_eq<9>{}); + }; + + using Find = hana::detail::first_unsatisfied_index<decltype(predicate)>; + + static_assert(decltype(Find{}())::value == 0, ""); + + static_assert(decltype(Find{}(ct_eq<9>{}))::value == 0, ""); + static_assert(decltype(Find{}(ct_eq<0>{}))::value == 1, ""); + + static_assert(decltype(Find{}(ct_eq<9>{}, poison{}))::value == 0, ""); + static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<9>{}))::value == 1, ""); + static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<1>{}))::value == 2, ""); + + static_assert(decltype(Find{}(ct_eq<9>{}, poison{}, poison{}))::value == 0, ""); + static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<9>{}, poison{}))::value == 1, ""); + static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<1>{}, ct_eq<9>{}))::value == 2, ""); + static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}))::value == 3, ""); + + static_assert(decltype(Find{}(ct_eq<9>{}, poison{}, poison{}, poison{}))::value == 0, ""); + static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<9>{}, poison{}, poison{}))::value == 1, ""); + static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<1>{}, ct_eq<9>{}, poison{}))::value == 2, ""); + static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<9>{}))::value == 3, ""); + static_assert(decltype(Find{}(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}))::value == 4, ""); +} |