libstdc++-v3/testsuite/23_containers/vector/modifiers/2.cc

   1 // 1999-11-09 bkoz
   2
   3 // Copyright (C) 1999-2025 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 23.2.4.3 vector modifiers
  21
  22 #include <vector>
  23 #include "testsuite_hooks.h"
  24
  25 // test the assign() function
  26 void
  27 test03()
  28 {
  29   const int K = 417;
  30   const int A[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17};
  31   const int B[] = {K, K, K, K, K};
  32   const std::size_t N = sizeof(A) / sizeof(int);
  33   const std::size_t M = sizeof(B) / sizeof(int);
  34
  35   // assign from pointer range
  36   std::vector<int> v3;
  37   v3.assign(A, A + N);
  38   VERIFY(std::equal(v3.begin(), v3.end(), A));
  39   VERIFY(v3.size() == N);
  40
  41   // assign from iterator range
  42   std::vector<int> v4;
  43   v4.assign(v3.begin(), v3.end());
  44   VERIFY(std::equal(v4.begin(), v4.end(), A));
  45   VERIFY(std::equal(A, A + N, v4.begin()));
  46
  47   // assign from initializer range with resize
  48   v4.assign(M, K);
  49   VERIFY(std::equal(v4.begin(), v4.end(), B));
  50   VERIFY(std::equal(B, B + M, v4.begin()));
  51   VERIFY((v4.size() == M) && (M != N));
  52 }
  53
  54 int main()
  55 {
  56   test03();
  57   return 0;
  58 }