set_value_const.pass.cpp (1451B)
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 // UNSUPPORTED: c++98, c++03 12 13 // <future> 14 15 // class promise<R> 16 17 // void promise::set_value(const R& r); 18 19 #include <future> 20 #include <cassert> 21 22 #include "test_macros.h" 23 24 struct A 25 { 26 A() {} 27 A(const A&) { 28 TEST_THROW(10); 29 } 30 }; 31 32 int main() 33 { 34 { 35 typedef int T; 36 T i = 3; 37 std::promise<T> p; 38 std::future<T> f = p.get_future(); 39 p.set_value(i); 40 ++i; 41 assert(f.get() == 3); 42 #ifndef TEST_HAS_NO_EXCEPTIONS 43 --i; 44 try 45 { 46 p.set_value(i); 47 assert(false); 48 } 49 catch (const std::future_error& e) 50 { 51 assert(e.code() == make_error_code(std::future_errc::promise_already_satisfied)); 52 } 53 #endif 54 } 55 { 56 typedef A T; 57 T i; 58 std::promise<T> p; 59 std::future<T> f = p.get_future(); 60 #ifndef TEST_HAS_NO_EXCEPTIONS 61 try 62 { 63 p.set_value(i); 64 assert(false); 65 } 66 catch (int j) 67 { 68 assert(j == 10); 69 } 70 #endif 71 } 72 }