libcxx/test/std/containers/sequences/vector.bool/reference/assign_bool.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 // <vector>
  10
  11 // reference& operator=(bool)
  12
  13 #include <cassert>
  14 #include <vector>
  15
  16 #include "test_macros.h"
  17
  18 TEST_CONSTEXPR_CXX20 bool test() {
  19   std::vector<bool> vec;
  20   typedef std::vector<bool>::reference Ref;
  21   vec.push_back(true);
  22   vec.push_back(false);
  23   Ref ref = vec[0];
  24   const Ref cref = vec[0];
  25
  26   assert(ref);
  27   ref = false;
  28   assert(!vec[0]);
  29   assert(!vec[1]);
  30   ref = true;
  31   assert(vec[0]);
  32   assert(!vec[1]);
  33
  34   assert(cref);
  35
  36 #if TEST_STD_VER > 20
  37   cref = false;
  38   assert(!vec[0]);
  39   assert(!vec[1]);
  40   cref = true;
  41   assert(vec[0]);
  42   assert(!vec[1]);
  43 #endif
  44
  45   return true;
  46 }
  47
  48 int main(int, char**) {
  49   test();
  50 #if TEST_STD_VER > 17
  51     static_assert(test());
  52 #endif
  53
  54   return 0;
  55 }