libcxx/test/std/containers/sequences/array/array.cons/initializer_list.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 // Construct with initializer list
  12
  13 #include <array>
  14 #include <cassert>
  15
  16 // std::array is explicitly allowed to be initialized with A a = { init-list };.
  17 // Disable the missing braces warning for this reason.
  18 #include "test_macros.h"
  19 #include "disable_missing_braces_warning.h"
  20
  21 int main(int, char**)
  22 {
  23     {
  24         typedef double T;
  25         typedef std::array<T, 3> C;
  26         C c = {1, 2, 3.5};
  27         assert(c.size() == 3);
  28         assert(c[0] == 1);
  29         assert(c[1] == 2);
  30         assert(c[2] == 3.5);
  31     }
  32     {
  33         typedef double T;
  34         typedef std::array<T, 0> C;
  35         C c = {};
  36         assert(c.size() == 0);
  37     }
  38
  39     {
  40         typedef double T;
  41         typedef std::array<T, 3> C;
  42         C c = {1};
  43         assert(c.size() == 3.0);
  44         assert(c[0] == 1);
  45     }
  46     {
  47         typedef int T;
  48         typedef std::array<T, 1> C;
  49         C c = {};
  50         assert(c.size() == 1);
  51     }
  52
  53   return 0;
  54 }