ceph/src/boost/libs/compute/test/test_discard_iterator.cpp

   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
  29 BOOST_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
  38 BOOST_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
  56 BOOST_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
  68 BOOST_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         vector.begin(), vector.end(),
  77         boost::compute::make_discard_iterator(),
  78         _1 > 4,
  79         queue
  80     );
  81     BOOST_CHECK(std::distance(boost::compute::discard_iterator(), end) == 4);
  82 }
  83
  84 BOOST_AUTO_TEST_CASE(discard_fill)
  85 {
  86     boost::compute::fill(
  87         boost::compute::make_discard_iterator(0),
  88         boost::compute::make_discard_iterator(100),
  89         42,
  90         queue
  91     );
  92 }
  93
  94 BOOST_AUTO_TEST_SUITE_END()