libcxx/test/std/containers/sequences/array/array.size/size.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 // template <class T, size_t N> constexpr size_type array<T,N>::size();
  12
  13 #include <array>
  14 #include <cassert>
  15
  16 #include "test_macros.h"
  17
  18 int main(int, char**)
  19 {
  20     {
  21         typedef double T;
  22         typedef std::array<T, 3> C;
  23         C c = {1, 2, 3.5};
  24         assert(c.size() == 3);
  25         assert(c.max_size() == 3);
  26         assert(!c.empty());
  27     }
  28     {
  29         typedef double T;
  30         typedef std::array<T, 0> C;
  31         C c = {};
  32         assert(c.size() == 0);
  33         assert(c.max_size() == 0);
  34         assert(c.empty());
  35     }
  36 #if TEST_STD_VER >= 11
  37     {
  38         typedef double T;
  39         typedef std::array<T, 3> C;
  40         constexpr C c = {1, 2, 3.5};
  41         static_assert(c.size() == 3, "");
  42         static_assert(c.max_size() == 3, "");
  43         static_assert(!c.empty(), "");
  44     }
  45     {
  46         typedef double T;
  47         typedef std::array<T, 0> C;
  48         constexpr C c = {};
  49         static_assert(c.size() == 0, "");
  50         static_assert(c.max_size() == 0, "");
  51         static_assert(c.empty(), "");
  52     }
  53 #endif
  54
  55     return 0;
  56 }