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// 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)
#ifndef BOOST_HANA_TEST_AUTO_NONE_OF_HPP
#define BOOST_HANA_TEST_AUTO_NONE_OF_HPP
#include <boost/hana/assert.hpp>
#include <boost/hana/bool.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/none_of.hpp>
#include <boost/hana/not.hpp>
#include "test_case.hpp"
#include <laws/base.hpp>
TestCase test_none_of{[]{
namespace hana = boost::hana;
using hana::test::ct_eq;
BOOST_HANA_CONSTANT_CHECK(hana::none_of(
MAKE_TUPLE(),
[](auto) { return hana::false_c; }
));
BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::none_of(
MAKE_TUPLE(ct_eq<0>{}),
[](auto) { return hana::true_c; }
)));
BOOST_HANA_CONSTANT_CHECK(hana::none_of(
MAKE_TUPLE(ct_eq<0>{}),
[](auto) { return hana::false_c; }
));
BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::none_of(
MAKE_TUPLE(ct_eq<0>{}),
hana::equal.to(ct_eq<0>{})
)));
BOOST_HANA_CONSTANT_CHECK(hana::none_of(
MAKE_TUPLE(ct_eq<0>{}),
hana::equal.to(ct_eq<999>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::none_of(
MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}),
hana::equal.to(ct_eq<0>{})
)));
BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::none_of(
MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}),
hana::equal.to(ct_eq<1>{})
)));
BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::none_of(
MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}),
hana::equal.to(ct_eq<2>{})
)));
BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::none_of(
MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}),
hana::equal.to(ct_eq<3>{})
)));
BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::none_of(
MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}),
hana::equal.to(ct_eq<4>{})
)));
BOOST_HANA_CONSTANT_CHECK(hana::none_of(
MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}),
hana::equal.to(ct_eq<999>{})
));
// Make sure `none_of` short-circuits with runtime predicates
// See http://stackoverflow.com/q/42012512/627587
{
{
int counter = 0;
auto tuple = MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{});
hana::none_of(tuple, [&](auto) { ++counter; return true; });
BOOST_HANA_RUNTIME_CHECK(counter == 1);
}
{
int counter = 0;
auto tuple = MAKE_TUPLE(ct_eq<999>{}, ct_eq<0>{}, ct_eq<999>{});
hana::none_of(tuple, [&](auto x) -> bool {
++counter;
return hana::equal(x, ct_eq<0>{});
});
BOOST_HANA_RUNTIME_CHECK(counter == 2);
}
}
}};
#endif // !BOOST_HANA_TEST_AUTO_NONE_OF_HPP
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