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 // <unordered_set> 10 11 // class unordered_set 12 13 // bool empty() const noexcept; 14 15 #include <unordered_set> 16 #include <cassert> 17 18 #include "test_macros.h" 19 #include "min_allocator.h" 20 main(int,char **)21int main(int, char**) 22 { 23 { 24 typedef std::unordered_set<int> M; 25 M m; 26 ASSERT_NOEXCEPT(m.empty()); 27 assert(m.empty()); 28 m.insert(M::value_type(1)); 29 assert(!m.empty()); 30 m.clear(); 31 assert(m.empty()); 32 } 33 #if TEST_STD_VER >= 11 34 { 35 typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> M; 36 M m; 37 ASSERT_NOEXCEPT(m.empty()); 38 assert(m.empty()); 39 m.insert(M::value_type(1)); 40 assert(!m.empty()); 41 m.clear(); 42 assert(m.empty()); 43 } 44 #endif 45 46 return 0; 47 } 48