1// Copyright Louis Dionne 2013-2022
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)
4
5#include <boost/hana/assert.hpp>
6#include <boost/hana/experimental/printable.hpp>
7#include <boost/hana/integral_constant.hpp>
8#include <boost/hana/map.hpp>
9#include <boost/hana/pair.hpp>
10
11#include <sstream>
12#include <string>
13namespace hana = boost::hana;
14
15
16int main() {
17 {
18 std::ostringstream ss;
19 ss << hana::experimental::print(
20 hana::make_map()
21 );
22 BOOST_HANA_RUNTIME_CHECK(ss.str() == "{}");
23 }
24
25 {
26 std::ostringstream ss;
27 ss << hana::experimental::print(
28 hana::make_map(hana::make_pair(hana::int_c<1>, 'x'))
29 );
30 BOOST_HANA_RUNTIME_CHECK(ss.str() == "{1 => x}");
31 }
32
33 {
34 std::ostringstream ss;
35 ss << hana::experimental::print(
36 hana::make_map(hana::make_pair(hana::int_c<1>, 'x'),
37 hana::make_pair(hana::int_c<2>, 'y'))
38 );
39 BOOST_HANA_RUNTIME_CHECK(ss.str() == "{1 => x, 2 => y}");
40 }
41
42 {
43 std::ostringstream ss;
44 ss << hana::experimental::print(
45 hana::make_map(hana::make_pair(hana::int_c<1>, 'x'),
46 hana::make_pair(hana::int_c<2>, 'y'),
47 hana::make_pair(hana::int_c<3>, 'z'))
48 );
49 BOOST_HANA_RUNTIME_CHECK(ss.str() == "{1 => x, 2 => y, 3 => z}");
50 }
51}
52

source code of boost/libs/hana/test/experimental/printable/map.cpp