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 // UNSUPPORTED: c++03, c++11, c++14, c++17 9 10 // <string> 11 12 // bool starts_with(charT x) const noexcept; 13 14 #include <string> 15 #include <cassert> 16 17 #include "test_macros.h" 18 main(int,char **)19int main(int, char**) 20 { 21 { 22 typedef std::string S; 23 S s1 {}; 24 S s2 { "abcde", 5 }; 25 26 ASSERT_NOEXCEPT(s1.starts_with('e')); 27 28 assert (!s1.starts_with('a')); 29 assert (!s1.starts_with('x')); 30 assert ( s2.starts_with('a')); 31 assert (!s2.starts_with('x')); 32 } 33 34 return 0; 35 } 36