test/std/thread/futures/futures.promise/set_exception.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // UNSUPPORTED: libcpp-has-no-threads
  11
  12 // <future>
  13
  14 // class promise<R>
  15
  16 // void set_exception(exception_ptr p);
  17
  18 #include <future>
  19 #include <cassert>
  20
  21 int main()
  22 {
  23     {
  24         typedef int T;
  25         std::promise<T> p;
  26         std::future<T> f = p.get_future();
  27         p.set_exception(std::make_exception_ptr(3));
  28         try
  29         {
  30             f.get();
  31             assert(false);
  32         }
  33         catch (int i)
  34         {
  35             assert(i == 3);
  36         }
  37         try
  38         {
  39             p.set_exception(std::make_exception_ptr(3));
  40             assert(false);
  41         }
  42         catch (const std::future_error& e)
  43         {
  44             assert(e.code() == make_error_code(std::future_errc::promise_already_satisfied));
  45         }
  46     }
  47 }