libcxx/test/std/containers/sequences/deque/deque.modifiers/push_front_rvalue.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: c++03
  10
  11 // <deque>
  12
  13 // void push_front(value_type&& v);
  14
  15 #include "asan_testing.h"
  16 #include <deque>
  17 #include <cassert>
  18 #include <cstddef>
  19
  20 #include "test_macros.h"
  21 #include "MoveOnly.h"
  22 #include "min_allocator.h"
  23
  24
  25 template <class C>
  26 C
  27 make(int size, int start = 0 )
  28 {
  29     const int b = 4096 / sizeof(int);
  30     int init = 0;
  31     if (start > 0)
  32     {
  33         init = (start+1) / b + ((start+1) % b != 0);
  34         init *= b;
  35         --init;
  36     }
  37     C c(init);
  38     for (int i = 0; i < init-start; ++i)
  39         c.pop_back();
  40     for (int i = 0; i < size; ++i)
  41         c.push_back(MoveOnly(i));
  42     for (int i = 0; i < start; ++i)
  43         c.pop_front();
  44     return c;
  45 }
  46
  47 template <class C>
  48 void
  49 test(C& c1, int x)
  50 {
  51     typedef typename C::iterator I;
  52     std::size_t c1_osize = c1.size();
  53     c1.push_front(MoveOnly(x));
  54     assert(c1.size() == c1_osize + 1);
  55     assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
  56     I i = c1.begin();
  57     assert(*i == MoveOnly(x));
  58     LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(c1));
  59     ++i;
  60     for (int j = 0; static_cast<std::size_t>(j) < c1_osize; ++j, (void) ++i)
  61         assert(*i == MoveOnly(j));
  62 }
  63
  64 template <class C>
  65 void
  66 testN(int start, int N)
  67 {
  68     C c1 = make<C>(N, start);
  69     test(c1, -10);
  70 }
  71
  72
  73 int main(int, char**)
  74 {
  75     {
  76     int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
  77     const int N = sizeof(rng)/sizeof(rng[0]);
  78     for (int i = 0; i < N; ++i)
  79         for (int j = 0; j < N; ++j)
  80             testN<std::deque<MoveOnly> >(rng[i], rng[j]);
  81     }
  82     {
  83     int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
  84     const int N = sizeof(rng)/sizeof(rng[0]);
  85     for (int i = 0; i < N; ++i)
  86         for (int j = 0; j < N; ++j)
  87             testN<std::deque<MoveOnly, safe_allocator<MoveOnly>> >(rng[i], rng[j]);
  88     }
  89
  90   return 0;
  91 }