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: c++98, c++03, c++11 11 12 // <experimental/any> 13 14 // template <class Value> any(Value &&) 15 16 // Test construction from a value. 17 // Concerns: 18 // --------- 19 // 1. The value is properly move/copied depending on the value category. 20 // 2. Both small and large values are properly handled. 21 22 23 #include <experimental/any> 24 #include <cassert> 25 26 #include "any_helpers.h" 27 #include "count_new.hpp" 28 #include "test_macros.h" 29 30 using std::experimental::any; 31 using std::experimental::any_cast; 32 33 template <class Type> test_copy_value_throws()34void test_copy_value_throws() 35 { 36 #if !defined(TEST_HAS_NO_EXCEPTIONS) 37 assert(Type::count == 0); 38 { 39 Type const t(42); 40 assert(Type::count == 1); 41 try { 42 any const a2(t); 43 assert(false); 44 } catch (my_any_exception const &) { 45 // do nothing 46 } catch (...) { 47 assert(false); 48 } 49 assert(Type::count == 1); 50 assert(t.value == 42); 51 } 52 assert(Type::count == 0); 53 #endif 54 } 55 test_move_value_throws()56void test_move_value_throws() 57 { 58 #if !defined(TEST_HAS_NO_EXCEPTIONS) 59 assert(throws_on_move::count == 0); 60 { 61 throws_on_move v; 62 assert(throws_on_move::count == 1); 63 try { 64 any const a(std::move(v)); 65 assert(false); 66 } catch (my_any_exception const &) { 67 // do nothing 68 } catch (...) { 69 assert(false); 70 } 71 assert(throws_on_move::count == 1); 72 } 73 assert(throws_on_move::count == 0); 74 #endif 75 } 76 77 template <class Type> test_copy_move_value()78void test_copy_move_value() { 79 // constructing from a small type should perform no allocations. 80 DisableAllocationGuard g(isSmallType<Type>()); ((void)g); 81 assert(Type::count == 0); 82 Type::reset(); 83 { 84 Type t(42); 85 assert(Type::count == 1); 86 87 any a(t); 88 89 assert(Type::count == 2); 90 assert(Type::copied == 1); 91 assert(Type::moved == 0); 92 assertContains<Type>(a, 42); 93 } 94 assert(Type::count == 0); 95 Type::reset(); 96 { 97 Type t(42); 98 assert(Type::count == 1); 99 100 any a(std::move(t)); 101 102 assert(Type::count == 2); 103 assert(Type::copied == 0); 104 assert(Type::moved == 1); 105 assertContains<Type>(a, 42); 106 } 107 } 108 109 main()110int main() { 111 test_copy_move_value<small>(); 112 test_copy_move_value<large>(); 113 test_copy_value_throws<small_throws_on_copy>(); 114 test_copy_value_throws<large_throws_on_copy>(); 115 test_move_value_throws(); 116 }