libcxx/test/std/containers/sequences/array/array.fill/fill.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 // <array>
  10
  11 // void fill(const T& u);
  12
  13 #include <array>
  14 #include <cassert>
  15
  16 #include "test_macros.h"
  17
  18 TEST_CONSTEXPR_CXX20 bool tests()
  19 {
  20     {
  21         typedef double T;
  22         typedef std::array<T, 3> C;
  23         C c = {1, 2, 3.5};
  24         c.fill(5.5);
  25         assert(c.size() == 3);
  26         assert(c[0] == 5.5);
  27         assert(c[1] == 5.5);
  28         assert(c[2] == 5.5);
  29     }
  30
  31     {
  32         typedef double T;
  33         typedef std::array<T, 0> C;
  34         C c = {};
  35         c.fill(5.5);
  36         assert(c.size() == 0);
  37     }
  38     return true;
  39 }
  40
  41 int main(int, char**)
  42 {
  43     tests();
  44 #if TEST_STD_VER >= 20
  45     static_assert(tests(), "");
  46 #endif
  47     return 0;
  48 }