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1 // Copyright Louis Dionne 2013-2016
2 // Distributed under the Boost Software License, Version 1.0.
3 // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
5 #include <boost/hana/assert.hpp>
6 #include <boost/hana/equal.hpp>
7 #include <boost/hana/erase_key.hpp>
8 #include <boost/hana/map.hpp>
10 #include <laws/base.hpp>
11 #include <support/minimal_product.hpp>
12 namespace hana
= boost::hana
;
16 auto key() { return hana::test::ct_eq
<i
>{}; }
19 auto val() { return hana::test::ct_eq
<-i
>{}; }
21 template <int i
, int j
>
22 auto p() { return ::minimal_product(key
<i
>(), val
<j
>()); }
27 BOOST_HANA_CONSTANT_CHECK(hana::equal(
28 hana::erase_key(hana::make_map(), undefined
{}),
32 BOOST_HANA_CONSTANT_CHECK(hana::equal(
33 hana::erase_key(hana::make_map(p
<1, 1>()), key
<1>()),
36 BOOST_HANA_CONSTANT_CHECK(hana::equal(
37 hana::erase_key(hana::make_map(p
<1, 1>()), key
<99>()),
38 hana::make_map(p
<1, 1>())
41 BOOST_HANA_CONSTANT_CHECK(hana::equal(
42 hana::erase_key(hana::make_map(p
<1, 1>(), p
<2, 2>()), key
<99>()),
43 hana::make_map(p
<1, 1>(), p
<2, 2>())
45 BOOST_HANA_CONSTANT_CHECK(hana::equal(
46 hana::erase_key(hana::make_map(p
<1, 1>(), p
<2, 2>()), key
<1>()),
47 hana::make_map(p
<2, 2>())
49 BOOST_HANA_CONSTANT_CHECK(hana::equal(
50 hana::erase_key(hana::make_map(p
<1, 1>(), p
<2, 2>()), key
<2>()),
51 hana::make_map(p
<1, 1>())
54 BOOST_HANA_CONSTANT_CHECK(hana::equal(
55 hana::erase_key(hana::make_map(p
<1, 1>(), p
<2, 2>(), p
<3, 3>()), key
<99>()),
56 hana::make_map(p
<1, 1>(), p
<2, 2>(), p
<3, 3>())
58 BOOST_HANA_CONSTANT_CHECK(hana::equal(
59 hana::erase_key(hana::make_map(p
<1, 1>(), p
<2, 2>(), p
<3, 3>()), key
<1>()),
60 hana::make_map(p
<2, 2>(), p
<3, 3>())
62 BOOST_HANA_CONSTANT_CHECK(hana::equal(
63 hana::erase_key(hana::make_map(p
<1, 1>(), p
<2, 2>(), p
<3, 3>()), key
<2>()),
64 hana::make_map(p
<1, 1>(), p
<3, 3>())
66 BOOST_HANA_CONSTANT_CHECK(hana::equal(
67 hana::erase_key(hana::make_map(p
<1, 1>(), p
<2, 2>(), p
<3, 3>()), key
<3>()),
68 hana::make_map(p
<1, 1>(), p
<2, 2>())