libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_constructible.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 // type_traits
  10
  11 // template <class T, class... Args>
  12 //   struct is_trivially_constructible;
  13
  14 #include <type_traits>
  15 #include "test_macros.h"
  16
  17 template <class T>
  18 void test_is_trivially_constructible()
  19 {
  20     static_assert(( std::is_trivially_constructible<T>::value), "");
  21 #if TEST_STD_VER > 14
  22     static_assert(( std::is_trivially_constructible_v<T>), "");
  23 #endif
  24 }
  25
  26 template <class T, class A0>
  27 void test_is_trivially_constructible()
  28 {
  29     static_assert(( std::is_trivially_constructible<T, A0>::value), "");
  30 #if TEST_STD_VER > 14
  31     static_assert(( std::is_trivially_constructible_v<T, A0>), "");
  32 #endif
  33 }
  34
  35 template <class T>
  36 void test_is_not_trivially_constructible()
  37 {
  38     static_assert((!std::is_trivially_constructible<T>::value), "");
  39 #if TEST_STD_VER > 14
  40     static_assert((!std::is_trivially_constructible_v<T>), "");
  41 #endif
  42 }
  43
  44 template <class T, class A0>
  45 void test_is_not_trivially_constructible()
  46 {
  47     static_assert((!std::is_trivially_constructible<T, A0>::value), "");
  48 #if TEST_STD_VER > 14
  49     static_assert((!std::is_trivially_constructible_v<T, A0>), "");
  50 #endif
  51 }
  52
  53 template <class T, class A0, class A1>
  54 void test_is_not_trivially_constructible()
  55 {
  56     static_assert((!std::is_trivially_constructible<T, A0, A1>::value), "");
  57 #if TEST_STD_VER > 14
  58     static_assert((!std::is_trivially_constructible_v<T, A0, A1>), "");
  59 #endif
  60 }
  61
  62 struct A
  63 {
  64     explicit A(int);
  65     A(int, double);
  66 };
  67
  68 int main(int, char**)
  69 {
  70     test_is_trivially_constructible<int> ();
  71     test_is_trivially_constructible<int, const int&> ();
  72
  73     test_is_not_trivially_constructible<A, int> ();
  74     test_is_not_trivially_constructible<A, int, double> ();
  75     test_is_not_trivially_constructible<A> ();
  76
  77   return 0;
  78 }