container/experimental/segmented_remove_copy_test.cpp

//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2025-2026. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/container for documentation.
//
//////////////////////////////////////////////////////////////////////////////

#include <boost/container/experimental/segmented_remove_copy.hpp>
#include "../test/lightweight_test.hpp"
#include "segmented_test_helper.hpp"
#include <boost/container/vector.hpp>

using namespace boost::container;

void test_remove_copy_segmented()
{
   test_detail::seg_vector<int> sv;
   int a1[] = {1, 2, 3};
   int a2[] = {2, 4, 2};
   int a3[] = {5, 2};
   sv.add_segment_range(a1, a1 + 3);
   sv.add_segment_range(a2, a2 + 3);
   sv.add_segment_range(a3, a3 + 2);

   boost::container::vector<int> out(8, 0);
   boost::container::vector<int>::iterator r = segmented_remove_copy(sv.begin(), sv.end(), out.begin(), 2);

   int expected[] = {1, 3, 4, 5};
   std::size_t count = static_cast<std::size_t>(r - out.begin());
   BOOST_TEST_EQ(count, 4u);
   for(std::size_t i = 0; i < count; ++i)
      BOOST_TEST_EQ(out[i], expected[i]);
}

void test_remove_copy_empty()
{
   test_detail::seg_vector<int> sv;
   boost::container::vector<int> out;
   boost::container::vector<int>::iterator r = segmented_remove_copy(sv.begin(), sv.end(), out.begin(), 0);
   BOOST_TEST(r == out.begin());
}

void test_remove_copy_none_removed()
{
   test_detail::seg_vector<int> sv;
   int a[] = {1, 3, 5};
   sv.add_segment_range(a, a + 3);

   boost::container::vector<int> out(3, 0);
   boost::container::vector<int>::iterator r = segmented_remove_copy(sv.begin(), sv.end(), out.begin(), 2);
   BOOST_TEST_EQ(static_cast<std::size_t>(r - out.begin()), 3u);
   BOOST_TEST_EQ(out[0], 1);
   BOOST_TEST_EQ(out[1], 3);
   BOOST_TEST_EQ(out[2], 5);
}

void test_remove_copy_non_segmented()
{
   int src[] = {1, 2, 3, 2, 4};
   boost::container::vector<int> v(src, src + 5);
   boost::container::vector<int> out(5, 0);
   boost::container::vector<int>::iterator r = segmented_remove_copy(v.begin(), v.end(), out.begin(), 2);

   std::size_t count = static_cast<std::size_t>(r - out.begin());
   BOOST_TEST_EQ(count, 3u);
   BOOST_TEST_EQ(out[0], 1);
   BOOST_TEST_EQ(out[1], 3);
   BOOST_TEST_EQ(out[2], 4);
}

void test_remove_copy_sentinel_segmented()
{
   test_detail::seg_vector<int> sv;
   int a1[] = {1, 2, 3};
   int a2[] = {2, 4, 2};
   int a3[] = {5, 2};
   sv.add_segment_range(a1, a1 + 3);
   sv.add_segment_range(a2, a2 + 3);
   sv.add_segment_range(a3, a3 + 2);

   boost::container::vector<int> out(8, 0);
   boost::container::vector<int>::iterator r = segmented_remove_copy(sv.begin(), test_detail::make_sentinel(sv.end()), out.begin(), 2);

   int expected[] = {1, 3, 4, 5};
   std::size_t count = static_cast<std::size_t>(r - out.begin());
   BOOST_TEST_EQ(count, 4u);
   for(std::size_t i = 0; i < count; ++i)
      BOOST_TEST_EQ(out[i], expected[i]);
}

void test_remove_copy_sentinel_non_segmented()
{
   int src[] = {1, 2, 3, 2, 4};
   boost::container::vector<int> v(src, src + 5);
   boost::container::vector<int> out(5, 0);
   boost::container::vector<int>::iterator r = segmented_remove_copy(v.begin(), test_detail::make_sentinel(v.end()), out.begin(), 2);

   std::size_t count = static_cast<std::size_t>(r - out.begin());
   BOOST_TEST_EQ(count, 3u);
   BOOST_TEST_EQ(out[0], 1);
   BOOST_TEST_EQ(out[1], 3);
   BOOST_TEST_EQ(out[2], 4);
}

void test_remove_copy_seg2()
{
   test_detail::seg2_vector<int> sv2;
   int a1[] = {1, 2, 3};
   int a2[] = {2, 4, 2};
   int a3[] = {5, 2};
   sv2.add_flat_segment_range(a1, a1 + 3);
   sv2.add_flat_segment_range(a2, a2 + 3);
   sv2.add_flat_segment_range(a3, a3 + 2);

   boost::container::vector<int> out(8, 0);
   boost::container::vector<int>::iterator r = segmented_remove_copy(sv2.begin(), sv2.end(), out.begin(), 2);

   int expected[] = {1, 3, 4, 5};
   std::size_t count = static_cast<std::size_t>(r - out.begin());
   BOOST_TEST_EQ(count, 4u);
   for(std::size_t i = 0; i < count; ++i)
      BOOST_TEST_EQ(out[i], expected[i]);
}

void test_remove_copy_single_segment_whole()
{
   test_detail::seg_vector<int> sv;
   int a[] = {1, 2, 3, 4, 2, 6};
   sv.add_segment_range(a, a + 6);

   boost::container::vector<int> out(6, 0);
   boost::container::vector<int>::iterator r = segmented_remove_copy(sv.begin(), sv.end(), out.begin(), 2);

   BOOST_TEST_EQ(static_cast<std::size_t>(r - out.begin()), 4u);
   BOOST_TEST_EQ(out[0], 1);
   BOOST_TEST_EQ(out[1], 3);
   BOOST_TEST_EQ(out[2], 4);
   BOOST_TEST_EQ(out[3], 6);
   BOOST_TEST_EQ(out[4], 0);
}

void test_remove_copy_single_segment_interior()
{
   test_detail::seg_vector<int> sv;
   int a[] = {1, 2, 3, 4, 2, 6};
   sv.add_segment_range(a, a + 6);

   boost::container::vector<int> out(6, 0);
   boost::container::vector<int>::iterator r =
      segmented_remove_copy(test_detail::iter_at(sv, 1), test_detail::iter_at(sv, 5), out.begin(), 2);

   BOOST_TEST_EQ(static_cast<std::size_t>(r - out.begin()), 2u);
   BOOST_TEST_EQ(out[0], 3);
   BOOST_TEST_EQ(out[1], 4);
   BOOST_TEST_EQ(out[2], 0);
   BOOST_TEST_EQ(out[3], 0);
}

void test_remove_copy_single_segment_empty_mid()
{
   test_detail::seg_vector<int> sv;
   int a[] = {1, 2, 3, 4, 2, 6};
   sv.add_segment_range(a, a + 6);

   test_detail::seg_vector<int>::iterator mid = test_detail::iter_at(sv, 3);
   boost::container::vector<int> out(3, 99);
   boost::container::vector<int>::iterator r = segmented_remove_copy(mid, mid, out.begin(), 2);

   BOOST_TEST(r == out.begin());
   BOOST_TEST_EQ(out[0], 99);
   BOOST_TEST_EQ(out[1], 99);
   BOOST_TEST_EQ(out[2], 99);
}

void test_remove_copy_single_segment_sentinel()
{
   test_detail::seg_vector<int> sv;
   int a[] = {1, 2, 3, 4, 2, 6};
   sv.add_segment_range(a, a + 6);

   boost::container::vector<int> out(6, 0);
   boost::container::vector<int>::iterator r =
      segmented_remove_copy(test_detail::iter_at(sv, 1),
                            test_detail::make_sentinel(test_detail::iter_at(sv, 5)), out.begin(), 2);

   BOOST_TEST_EQ(static_cast<std::size_t>(r - out.begin()), 2u);
   BOOST_TEST_EQ(out[0], 3);
   BOOST_TEST_EQ(out[1], 4);
   BOOST_TEST_EQ(out[2], 0);
}

void test_remove_copy_single_segment_seg2_outer()
{
   test_detail::seg2_vector<int> sv2;
   test_detail::seg_vector<int> inner;
   int a1[] = {1, 2, 3};
   int a2[] = {4, 2};
   int a3[] = {6, 7};
   inner.add_segment_range(a1, a1 + 3);
   inner.add_segment_range(a2, a2 + 2);
   inner.add_segment_range(a3, a3 + 2);
   sv2.add_segment(inner);

   boost::container::vector<int> out(8, 0);
   boost::container::vector<int>::iterator r =
      segmented_remove_copy(test_detail::iter_at(sv2, 1), test_detail::iter_at(sv2, 6), out.begin(), 2);

   BOOST_TEST_EQ(static_cast<std::size_t>(r - out.begin()), 3u);
   BOOST_TEST_EQ(out[0], 3);
   BOOST_TEST_EQ(out[1], 4);
   BOOST_TEST_EQ(out[2], 6);
   BOOST_TEST_EQ(out[3], 0);
}

void test_remove_copy_single_segment_seg2_both()
{
   test_detail::seg2_vector<int> sv2;
   test_detail::seg_vector<int> inner;
   int a[] = {1, 2, 3, 4, 2, 6};
   inner.add_segment_range(a, a + 6);
   sv2.add_segment(inner);

   boost::container::vector<int> out(6, 0);
   boost::container::vector<int>::iterator r =
      segmented_remove_copy(test_detail::iter_at(sv2, 1), test_detail::iter_at(sv2, 5), out.begin(), 2);

   BOOST_TEST_EQ(static_cast<std::size_t>(r - out.begin()), 2u);
   BOOST_TEST_EQ(out[0], 3);
   BOOST_TEST_EQ(out[1], 4);
   BOOST_TEST_EQ(out[2], 0);
}

void test_remove_copy_single_segment_src_multi_dst()
{
   test_detail::seg_vector<int> sv;
   int a[] = {1, 2, 3, 4, 2, 6, 7, 8};
   sv.add_segment_range(a, a + 8);

   test_detail::seg_vector<int> out;
   out.add_segment(2, 0);
   out.add_segment(3, 0);

   typedef test_detail::seg_vector<int>::iterator iter_t;
   iter_t r = segmented_remove_copy(test_detail::iter_at(sv, 1), test_detail::iter_at(sv, 7), out.begin(), 2);

   BOOST_TEST(r == test_detail::iter_at(out, 4));
   int expected[] = {3, 4, 6, 7};
   iter_t it = out.begin();
   for(int i = 0; i < 4; ++i, ++it)
      BOOST_TEST_EQ(*it, expected[i]);
   BOOST_TEST_EQ(*it, 0);
}

void test_remove_copy_single_segment_src_and_dst()
{
   test_detail::seg_vector<int> sv;
   int a[] = {1, 2, 3, 4, 2, 6};
   sv.add_segment_range(a, a + 6);

   test_detail::seg_vector<int> out;
   out.add_segment(4, 0);

   typedef test_detail::seg_vector<int>::iterator iter_t;
   iter_t r = segmented_remove_copy(test_detail::iter_at(sv, 1), test_detail::iter_at(sv, 5), out.begin(), 2);

   BOOST_TEST(r == test_detail::iter_at(out, 2));
   iter_t it = out.begin();
   BOOST_TEST_EQ(*it, 3); ++it;
   BOOST_TEST_EQ(*it, 4); ++it;
   BOOST_TEST_EQ(*it, 0); ++it;
   BOOST_TEST_EQ(*it, 0);
}

void test_remove_copy_single_segment_dst_from_flat()
{
   int src[] = {1, 2, 3, 2, 4};
   boost::container::vector<int> v(src, src + 5);

   test_detail::seg_vector<int> out;
   out.add_segment(5, 0);

   typedef test_detail::seg_vector<int>::iterator iter_t;
   iter_t r = segmented_remove_copy(v.begin(), v.end(), out.begin(), 2);

   BOOST_TEST(r == test_detail::iter_at(out, 3));
   iter_t it = out.begin();
   BOOST_TEST_EQ(*it, 1); ++it;
   BOOST_TEST_EQ(*it, 3); ++it;
   BOOST_TEST_EQ(*it, 4); ++it;
   BOOST_TEST_EQ(*it, 0); ++it;
   BOOST_TEST_EQ(*it, 0);
}

//////////////////////////////////////////////////////////////////////////////
// Shape matrix.
//
// for_each_shape2_all crosses the twelve branch specs of the source range with
// the twelve of the destination, at both segmentation depths, so the two
// segmentations vary independently.  The 'e' specs carry empty segments, which
// is the only way into the sfirst == slast branch of
// segmented_remove_copy_dst_bounded with an empty destination segment.
//
// The output length is data dependent, so each source size is run against a
// destination sized to exactly the number of survivors, which puts the guard
// immediately after the last slot the algorithm may write, and against one
// with three spare slots, which pins the slots it must leave alone.  The guard
// value differs from the removed value, so a read one past the end of the
// source would copy the guard and be caught by the exact-size form.
//
// The reference answer is filtered out of flatten_n_ints over the logical
// source range, not flatten_all_ints, which deliberately includes the guard.
//////////////////////////////////////////////////////////////////////////////

const int shape_removed = 2;     // the value handed to segmented_remove_copy
const int shape_filler  = -998;  // guard just past the end of every range
const int shape_fill    = -1;    // every destination slot before the call

const int shape_dst_vals[] = {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1};

std::size_t shape_survivor_count(const int* v, std::size_t n)
{
   std::size_t c = 0;
   for(std::size_t i = 0; i != n; ++i)
      if(v[i] != shape_removed)
         ++c;
   return c;
}

struct remove_copy_shape_check
{
   template<class CSrc, class CDst>
   void operator()(CSrc& src, std::size_t n_src, const char* src_spec,
                   CDst& dst, std::size_t n_dst, const char* dst_spec) const
   {
      typedef typename CDst::iterator dst_iter_t;

      const boost::container::vector<int> in = test_detail::flatten_n_ints(src, n_src);
      boost::container::vector<int> ref;
      for(std::size_t i = 0; i != n_src; ++i)
         if(in[i] != shape_removed)
            ref.push_back(in[i]);

      const dst_iter_t r = segmented_remove_copy
         (src.begin(), test_detail::iter_at(src, n_src), dst.begin(), shape_removed);

      BOOST_TEST(r == test_detail::iter_at(dst, ref.size()));
      BOOST_TEST(test_detail::filler_intact(src, n_src, shape_filler));
      BOOST_TEST(test_detail::filler_intact(dst, n_dst, shape_filler));

      const boost::container::vector<int> got = test_detail::flatten_n_ints(dst, n_dst);
      BOOST_TEST_EQ(got.size(), n_dst);
      for(std::size_t i = 0; i != n_dst; ++i)
         BOOST_TEST_EQ(got[i], i < ref.size() ? ref[i] : shape_fill);

      // The source is read-only, so it has to come back unchanged.
      const boost::container::vector<int> src_after = test_detail::flatten_n_ints(src, n_src);
      for(std::size_t i = 0; i != n_src; ++i)
         BOOST_TEST_EQ(src_after[i], in[i]);

      BOOST_TEST(src_spec != 0 && dst_spec != 0);
   }
};

void test_remove_copy_shape_matrix()
{
   // Interleaved removals, a leading and a trailing removal, nothing removed
   // and everything removed, so the empty and the full answer are both in.
   static const int mixed[]  = {1, 2, 3, 2, 4, 2, 5, 6, 2, 7};
   static const int edges[]  = {2, 1, 3, 4, 5, 2};
   static const int none[]   = {1, 3, 5, 7, 9, 11};
   static const int all_rm[] = {2, 2, 2, 2, 2, 2};
   static const int* const sets[] = {mixed, edges, none, all_rm};
   static const std::size_t set_len[] = {10u, 6u, 6u, 6u};
   static const std::size_t sizes[] = {0u, 1u, 2u, 3u, 5u, 6u};

   for(std::size_t s = 0; s != sizeof(sets)/sizeof(sets[0]); ++s) {
      for(std::size_t i = 0; i != sizeof(sizes)/sizeof(sizes[0]); ++i) {
         const std::size_t n_src = sizes[i];
         if(n_src > set_len[s])
            continue;
         const std::size_t m = shape_survivor_count(sets[s], n_src);
         test_detail::for_each_shape2_all<int, int>
            (sets[s], n_src, shape_dst_vals, m, shape_filler, remove_copy_shape_check());
         test_detail::for_each_shape2_all<int, int>
            (sets[s], n_src, shape_dst_vals, m + 3u, shape_filler, remove_copy_shape_check());
      }
   }
}

//////////////////////////////////////////////////////////////////////////////
// Unrolled cleanup block coverage.
//
// remove_copy_cleanup_blocks<32> only runs with a random-access source and a
// destination segment that still has room for 32 more elements.  Every other
// range in this file is far shorter than one block, so without these cases the
// block and its remainder never execute and all the work falls to the checked
// tail loop.
//
// Two removal densities are used: every third element removed, so a
// destination sized to the survivor count still has block room, and no element
// removed at all.  Between them the block stops on the source count in some
// cases and on the destination room in others, and the tail loop is handed
// both an empty and a non-empty remainder.
//////////////////////////////////////////////////////////////////////////////

template<class CSrc, class CDst>
void remove_copy_block_case(const char* src_spec, const char* dst_spec, std::size_t n, std::size_t every)
{
   boost::container::vector<int> vals;
   vals.reserve(n);
   for(std::size_t i = 0; i != n; ++i)
      vals.push_back(every && (i % every) == 0 ? shape_removed : static_cast<int>(i) + 10);

   CSrc src;
   test_detail::make_range(src, src_spec, &vals[0], n, shape_filler);

   boost::container::vector<int> ref;
   for(std::size_t i = 0; i != n; ++i)
      if(vals[i] != shape_removed)
         ref.push_back(vals[i]);

   CDst dst;
   test_detail::make_dest_range(dst, dst_spec, ref.size(), shape_fill, shape_filler);

   typedef typename CDst::iterator dst_iter_t;
   const dst_iter_t r = segmented_remove_copy
      (src.begin(), test_detail::iter_at(src, n), dst.begin(), shape_removed);

   BOOST_TEST(r == test_detail::iter_at(dst, ref.size()));
   BOOST_TEST(test_detail::filler_intact(src, n, shape_filler));
   BOOST_TEST(test_detail::filler_intact(dst, ref.size(), shape_filler));

   const boost::container::vector<int> got = test_detail::flatten_n_ints(dst, ref.size());
   BOOST_TEST_EQ(got.size(), ref.size());
   for(std::size_t i = 0; i != got.size(); ++i)
      BOOST_TEST_EQ(got[i], ref[i]);
}

void test_remove_copy_unrolled_blocks()
{
   typedef test_detail::seg_vector<int>  s1_t;
   typedef test_detail::seg2_vector<int> s2_t;

   static const std::size_t sizes[] = {33u, 39u, 64u, 200u, 320u};
   static const std::size_t densities[] = {0u, 3u};

   for(std::size_t i = 0; i != sizeof(sizes)/sizeof(sizes[0]); ++i) {
      const std::size_t n = sizes[i];
      for(std::size_t d = 0; d != sizeof(densities)/sizeof(densities[0]); ++d) {
         const std::size_t e = densities[d];
         remove_copy_block_case<s1_t, s1_t>("s",  "s",  n, e);
         remove_copy_block_case<s1_t, s1_t>("m",  "m",  n, e);
         remove_copy_block_case<s1_t, s1_t>("e",  "e",  n, e);
         remove_copy_block_case<s1_t, s2_t>("s",  "ss", n, e);
         remove_copy_block_case<s1_t, s2_t>("m",  "mm", n, e);
         remove_copy_block_case<s2_t, s1_t>("sm", "s",  n, e);
         remove_copy_block_case<s2_t, s2_t>("mm", "mm", n, e);
         remove_copy_block_case<s2_t, s2_t>("ee", "ee", n, e);
      }
   }
}

//////////////////////////////////////////////////////////////////////////////
// Comparison count.
//
// [alg.remove] mandates "Exactly last - first applications of the
// corresponding predicate or comparison", whatever the segmentation of either
// range.  A leaf that compares an element, then finds the destination segment
// full and returns without consuming it hands that element back to the
// destination walker, which compares it again; only an equality catches that.
// There is no predicate overload, so the count comes from the value type.
//////////////////////////////////////////////////////////////////////////////

struct remove_copy_count_check
{
   template<class CSrc, class CDst>
   void operator()(CSrc& src, std::size_t n_src, const char* src_spec,
                   CDst& dst, std::size_t n_dst, const char* dst_spec) const
   {
      test_detail::counted_int_ops().reset();
      segmented_remove_copy(src.begin(), test_detail::iter_at(src, n_src), dst.begin(),
                            test_detail::counted_int(shape_removed));
      const std::size_t applied = test_detail::counted_int_ops().cmp;

      BOOST_TEST_EQ(applied, n_src);
      BOOST_TEST(src_spec != 0 && dst_spec != 0 && n_dst <= n_src + 3u);
   }
};

void remove_copy_add_block(test_detail::seg_vector<test_detail::counted_int>& c, std::size_t block)
{  c.add_segment(block, test_detail::counted_int(0));   }

void remove_copy_add_block(test_detail::seg2_vector<test_detail::counted_int>& c, std::size_t block)
{
   test_detail::seg_vector<test_detail::counted_int> inner;
   inner.add_segment(block, test_detail::counted_int(0));
   c.add_segment(inner);
}

// Destination segments of a handful of elements each, so that boundary
// crossings dominate: with 64 elements and blocks of 8 there are seven of them,
// and the depth-2 destination multiplies them.
template<class CDst>
void remove_copy_count_small_dst(std::size_t n, std::size_t block, bool all_kept)
{
   boost::container::vector<test_detail::counted_int> src;
   src.reserve(n);
   for(std::size_t i = 0; i != n; ++i)
      src.push_back(test_detail::counted_int
         (all_kept ? static_cast<int>(i) + 10 : shape_removed));

   CDst dst;
   for(std::size_t room = 0; room < n; room += block)
      remove_copy_add_block(dst, block);

   test_detail::counted_int_ops().reset();
   segmented_remove_copy(src.begin(), src.end(), dst.begin(),
                         test_detail::counted_int(shape_removed));
   BOOST_TEST_EQ(test_detail::counted_int_ops().cmp, n);
}

void test_remove_copy_comparison_count()
{
   static const int mixed[]  = {1, 2, 3, 2, 4, 2, 5, 6, 2, 7};
   static const int edges[]  = {2, 1, 3, 4, 5, 2};
   static const int none[]   = {1, 3, 5, 7, 9, 11};
   static const int all_rm[] = {2, 2, 2, 2, 2, 2};
   static const int* const sets[] = {mixed, edges, none, all_rm};
   static const std::size_t set_len[] = {10u, 6u, 6u, 6u};
   static const std::size_t sizes[] = {0u, 1u, 2u, 3u, 5u, 6u};

   for(std::size_t s = 0; s != sizeof(sets)/sizeof(sets[0]); ++s) {
      for(std::size_t i = 0; i != sizeof(sizes)/sizeof(sizes[0]); ++i) {
         const std::size_t n_src = sizes[i];
         if(n_src > set_len[s])
            continue;
         const std::size_t m = shape_survivor_count(sets[s], n_src);
         test_detail::for_each_shape2_all<test_detail::counted_int, test_detail::counted_int>
            (sets[s], n_src, shape_dst_vals, m, shape_filler, remove_copy_count_check());
         test_detail::for_each_shape2_all<test_detail::counted_int, test_detail::counted_int>
            (sets[s], n_src, shape_dst_vals, m + 3u, shape_filler, remove_copy_count_check());
      }
   }

   static const std::size_t blocks[] = {1u, 2u, 3u, 8u, 16u};
   for(std::size_t b = 0; b != sizeof(blocks)/sizeof(blocks[0]); ++b) {
      for(int ak = 0; ak != 2; ++ak) {
         const bool a = ak != 0;
         remove_copy_count_small_dst<test_detail::seg_vector<test_detail::counted_int> >
            (64u, blocks[b], a);
         remove_copy_count_small_dst<test_detail::seg2_vector<test_detail::counted_int> >
            (64u, blocks[b], a);
      }
   }
}

int main()
{
   test_remove_copy_segmented();
   test_remove_copy_empty();
   test_remove_copy_none_removed();
   test_remove_copy_single_segment_whole();
   test_remove_copy_single_segment_interior();
   test_remove_copy_single_segment_empty_mid();
   test_remove_copy_single_segment_sentinel();
   test_remove_copy_single_segment_seg2_outer();
   test_remove_copy_single_segment_seg2_both();
   test_remove_copy_non_segmented();
   test_remove_copy_sentinel_segmented();
   test_remove_copy_sentinel_non_segmented();
   test_remove_copy_seg2();
   test_remove_copy_single_segment_src_multi_dst();
   test_remove_copy_single_segment_src_and_dst();
   test_remove_copy_single_segment_dst_from_flat();
   test_remove_copy_shape_matrix();
   test_remove_copy_unrolled_blocks();
   test_remove_copy_comparison_count();
   return boost::report_errors();
}