libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/copy.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 // <random>
  10
  11 // template<class Engine, size_t k>
  12 // class shuffle_order_engine
  13
  14 // shuffle_order_engine(const shuffle_order_engine&);
  15
  16 #include <random>
  17 #include <cassert>
  18
  19 #include "test_macros.h"
  20
  21 void
  22 test1()
  23 {
  24     typedef std::knuth_b E;
  25     E e1;
  26     (void)e1();
  27     E e2 = e1;
  28     assert(e1 == e2);
  29     assert(e1() == e2());
  30     E::result_type k = e1();
  31     assert(e1 != e2);
  32     assert(e2() == k);
  33     assert(e1 == e2);
  34 }
  35
  36 int main(int, char**)
  37 {
  38     test1();
  39
  40   return 0;
  41 }