1//---------------------------------------------------------------------------//
2// Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@gmail.com>
3//
4// Distributed under the Boost Software License, Version 1.0
5// See accompanying file LICENSE_1_0.txt or copy at
6// http://www.boost.org/LICENSE_1_0.txt
7//
8// See http://boostorg.github.com/compute for more information.
9//---------------------------------------------------------------------------//
10
11#define BOOST_TEST_MODULE TestDiscardIterator
12#include <boost/test/unit_test.hpp>
13
14#include <iterator>
15
16#include <boost/type_traits.hpp>
17#include <boost/static_assert.hpp>
18
19#include <boost/compute/algorithm/copy.hpp>
20#include <boost/compute/algorithm/copy_if.hpp>
21#include <boost/compute/algorithm/fill.hpp>
22#include <boost/compute/lambda.hpp>
23#include <boost/compute/container/vector.hpp>
24#include <boost/compute/iterator/discard_iterator.hpp>
25
26#include "check_macros.hpp"
27#include "context_setup.hpp"
28
29BOOST_AUTO_TEST_CASE(value_type)
30{
31 BOOST_STATIC_ASSERT((
32 boost::is_same<
33 boost::compute::discard_iterator::value_type, void
34 >::value
35 ));
36}
37
38BOOST_AUTO_TEST_CASE(distance)
39{
40 BOOST_CHECK_EQUAL(
41 std::distance(
42 boost::compute::make_discard_iterator(0),
43 boost::compute::make_discard_iterator(10)
44 ),
45 std::ptrdiff_t(10)
46 );
47 BOOST_CHECK_EQUAL(
48 std::distance(
49 boost::compute::make_discard_iterator(5),
50 boost::compute::make_discard_iterator(10)
51 ),
52 std::ptrdiff_t(5)
53 );
54}
55
56BOOST_AUTO_TEST_CASE(discard_copy)
57{
58 boost::compute::vector<int> vector(10, context);
59 boost::compute::fill(vector.begin(), vector.end(), 42, queue);
60
61 boost::compute::copy(
62 vector.begin(), vector.end(),
63 boost::compute::make_discard_iterator(),
64 queue
65 );
66}
67
68BOOST_AUTO_TEST_CASE(discard_copy_if)
69{
70 int data[] = { 1, 2, 3, 4, 5, 6, 7, 8 };
71 boost::compute::vector<int> vector(data, data + 8, queue);
72
73 using boost::compute::lambda::_1;
74
75 boost::compute::discard_iterator end = boost::compute::copy_if(
76 first: vector.begin(), last: vector.end(),
77 result: boost::compute::make_discard_iterator(),
78 predicate: _1 > 4,
79 queue
80 );
81 BOOST_CHECK(std::distance(boost::compute::discard_iterator(), end) == 4);
82}
83
84BOOST_AUTO_TEST_CASE(discard_fill)
85{
86 boost::compute::fill(
87 first: boost::compute::make_discard_iterator(index: 0),
88 last: boost::compute::make_discard_iterator(index: 100),
89 value: 42,
90 queue
91 );
92}
93
94BOOST_AUTO_TEST_SUITE_END()
95

source code of boost/libs/compute/test/test_discard_iterator.cpp