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/equal.hpp>
7#include <boost/hana/experimental/view.hpp>
8#include <boost/hana/transform.hpp>
9
10#include <laws/base.hpp>
11#include <support/seq.hpp>
12namespace hana = boost::hana;
13using hana::test::ct_eq;
14
15
16int main() {
17 auto container = ::seq;
18 auto f = hana::test::_injection<0>{};
19 auto g = hana::test::_injection<1>{};
20
21 {
22 auto storage = container();
23 auto transformed = hana::experimental::transformed(storage, f);
24 BOOST_HANA_CONSTANT_CHECK(hana::equal(
25 hana::transform(transformed, g),
26 container()
27 ));
28 }{
29 auto storage = container(ct_eq<0>{});
30 auto transformed = hana::experimental::transformed(storage, f);
31 BOOST_HANA_CONSTANT_CHECK(hana::equal(
32 hana::transform(transformed, g),
33 container(g(f(ct_eq<0>{})))
34 ));
35 }{
36 auto storage = container(ct_eq<0>{}, ct_eq<1>{});
37 auto transformed = hana::experimental::transformed(storage, f);
38 BOOST_HANA_CONSTANT_CHECK(hana::equal(
39 hana::transform(transformed, g),
40 container(g(f(ct_eq<0>{})), g(f(ct_eq<1>{})))
41 ));
42 }{
43 auto storage = container(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{});
44 auto transformed = hana::experimental::transformed(storage, f);
45 BOOST_HANA_CONSTANT_CHECK(hana::equal(
46 hana::transform(transformed, g),
47 container(g(f(ct_eq<0>{})), g(f(ct_eq<1>{})), g(f(ct_eq<2>{})))
48 ));
49 }{
50 auto storage = container(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{});
51 auto transformed = hana::experimental::transformed(storage, f);
52 BOOST_HANA_CONSTANT_CHECK(hana::equal(
53 hana::transform(transformed, g),
54 container(g(f(ct_eq<0>{})), g(f(ct_eq<1>{})), g(f(ct_eq<2>{})), g(f(ct_eq<3>{})))
55 ));
56 }
57}
58

source code of boost/libs/hana/test/experimental/view/transformed/transform.cpp