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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_GROUP_HPP
#define BOOST_HANA_TEST_AUTO_GROUP_HPP
#include <boost/hana/assert.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/group.hpp>
#include "test_case.hpp"
#include <laws/base.hpp>
#include <support/equivalence_class.hpp>
TestCase test_group{[]{
namespace hana = boost::hana;
using hana::test::ct_eq;
struct undefined { };
// Test without a custom predicate
{
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group(MAKE_TUPLE()),
MAKE_TUPLE()
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group(MAKE_TUPLE(ct_eq<0>{})),
MAKE_TUPLE(
MAKE_TUPLE(ct_eq<0>{}))
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group(MAKE_TUPLE(ct_eq<0>{}, ct_eq<0>{})),
MAKE_TUPLE(
MAKE_TUPLE(ct_eq<0>{}, ct_eq<0>{}))
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{})),
MAKE_TUPLE(
MAKE_TUPLE(ct_eq<0>{}),
MAKE_TUPLE(ct_eq<1>{}))
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group(MAKE_TUPLE(ct_eq<0>{}, ct_eq<0>{}, ct_eq<0>{})),
MAKE_TUPLE(
MAKE_TUPLE(ct_eq<0>{}, ct_eq<0>{}, ct_eq<0>{}))
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group(MAKE_TUPLE(ct_eq<0>{}, ct_eq<0>{}, ct_eq<1>{})),
MAKE_TUPLE(
MAKE_TUPLE(ct_eq<0>{}, ct_eq<0>{}),
MAKE_TUPLE(ct_eq<1>{}))
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<0>{})),
MAKE_TUPLE(
MAKE_TUPLE(ct_eq<0>{}),
MAKE_TUPLE(ct_eq<1>{}),
MAKE_TUPLE(ct_eq<0>{}))
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group(MAKE_TUPLE(ct_eq<1>{}, ct_eq<0>{}, ct_eq<0>{})),
MAKE_TUPLE(
MAKE_TUPLE(ct_eq<1>{}),
MAKE_TUPLE(ct_eq<0>{}, ct_eq<0>{}))
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group(MAKE_TUPLE(ct_eq<0>{}, ct_eq<0>{}, ct_eq<1>{}, ct_eq<1>{})),
MAKE_TUPLE(MAKE_TUPLE(ct_eq<0>{}, ct_eq<0>{}),
MAKE_TUPLE(ct_eq<1>{}, ct_eq<1>{}))
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group(MAKE_TUPLE(ct_eq<0>{}, ct_eq<0>{}, ct_eq<1>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<2>{}, ct_eq<2>{})),
MAKE_TUPLE(
MAKE_TUPLE(ct_eq<0>{}, ct_eq<0>{}),
MAKE_TUPLE(ct_eq<1>{}, ct_eq<1>{}),
MAKE_TUPLE(ct_eq<2>{}, ct_eq<2>{}, ct_eq<2>{}))
));
}
// Test with a custom predicate
{
auto a = [](auto z) { return ::equivalence_class(ct_eq<999>{}, z); };
auto b = [](auto z) { return ::equivalence_class(ct_eq<888>{}, z); };
auto pred = [](auto x, auto y) {
return hana::equal(x.unwrap, y.unwrap);
};
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group(MAKE_TUPLE(), undefined{}),
MAKE_TUPLE()
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group(MAKE_TUPLE(a(ct_eq<0>{})), pred),
MAKE_TUPLE(
MAKE_TUPLE(a(ct_eq<0>{})))
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group(MAKE_TUPLE(a(ct_eq<0>{}), b(ct_eq<0>{})), pred),
MAKE_TUPLE(
MAKE_TUPLE(a(ct_eq<0>{}), b(ct_eq<0>{})))
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group(MAKE_TUPLE(a(ct_eq<0>{}), b(ct_eq<0>{}), a(ct_eq<1>{})), pred),
MAKE_TUPLE(
MAKE_TUPLE(a(ct_eq<0>{}), b(ct_eq<0>{})),
MAKE_TUPLE(a(ct_eq<1>{})))
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group(MAKE_TUPLE(a(ct_eq<0>{}), b(ct_eq<0>{}), a(ct_eq<1>{}), b(ct_eq<1>{})), pred),
MAKE_TUPLE(
MAKE_TUPLE(a(ct_eq<0>{}), b(ct_eq<0>{})),
MAKE_TUPLE(a(ct_eq<1>{}), b(ct_eq<1>{})))
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group(MAKE_TUPLE(a(ct_eq<0>{}), b(ct_eq<0>{}), a(ct_eq<1>{}), b(ct_eq<1>{}), b(ct_eq<0>{})), pred),
MAKE_TUPLE(
MAKE_TUPLE(a(ct_eq<0>{}), b(ct_eq<0>{})),
MAKE_TUPLE(a(ct_eq<1>{}), b(ct_eq<1>{})),
MAKE_TUPLE(b(ct_eq<0>{})))
));
// Test group.by syntactic sugar
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group.by(pred, MAKE_TUPLE(a(ct_eq<0>{}), b(ct_eq<0>{}), a(ct_eq<1>{}), b(ct_eq<1>{}), b(ct_eq<0>{}))),
MAKE_TUPLE(
MAKE_TUPLE(a(ct_eq<0>{}), b(ct_eq<0>{})),
MAKE_TUPLE(a(ct_eq<1>{}), b(ct_eq<1>{})),
MAKE_TUPLE(b(ct_eq<0>{})))
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::group.by(pred)(MAKE_TUPLE(a(ct_eq<0>{}), b(ct_eq<0>{}), a(ct_eq<1>{}), b(ct_eq<1>{}), b(ct_eq<0>{}))),
MAKE_TUPLE(
MAKE_TUPLE(a(ct_eq<0>{}), b(ct_eq<0>{})),
MAKE_TUPLE(a(ct_eq<1>{}), b(ct_eq<1>{})),
MAKE_TUPLE(b(ct_eq<0>{})))
));
}
}};
#endif // !BOOST_HANA_TEST_AUTO_GROUP_HPP
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