libcxx/test/std/containers/container.adaptors/queue/queue.defn/assign_move.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 // <queue>
  12
  13 // queue& operator=(queue&& q);
  14
  15 #include <queue>
  16 #include <cassert>
  17
  18 #include "test_macros.h"
  19 #include "MoveOnly.h"
  20
  21
  22 template <class C>
  23 C
  24 make(int n)
  25 {
  26     C c;
  27     for (int i = 0; i < n; ++i)
  28         c.push_back(MoveOnly(i));
  29     return c;
  30 }
  31
  32
  33 int main(int, char**)
  34 {
  35     std::queue<MoveOnly> q(make<std::deque<MoveOnly> >(5));
  36     std::queue<MoveOnly> q2;
  37     q2 = std::move(q);
  38     assert(q2.size() == 5);
  39     assert(q.empty());
  40
  41   return 0;
  42 }