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 // <string> 11 12 // const_reference at(size_type pos) const; 13 // reference at(size_type pos); 14 15 #include <string> 16 #include <stdexcept> 17 #include <cassert> 18 19 #include "min_allocator.h" 20 21 #include "test_macros.h" 22 23 template <class S> 24 void 25 test(S s, typename S::size_type pos) 26 { 27 const S& cs = s; 28 if (pos < s.size()) 29 { 30 assert(s.at(pos) == s[pos]); 31 assert(cs.at(pos) == cs[pos]); 32 } 33 #ifndef TEST_HAS_NO_EXCEPTIONS 34 else 35 { 36 try 37 { 38 s.at(pos); 39 assert(false); 40 } 41 catch (std::out_of_range&) 42 { 43 assert(pos >= s.size()); 44 } 45 try 46 { 47 cs.at(pos); 48 assert(false); 49 } 50 catch (std::out_of_range&) 51 { 52 assert(pos >= s.size()); 53 } 54 } 55 #endif 56 } 57 58 int main() 59 { 60 { 61 typedef std::string S; 62 test(S(), 0); 63 test(S("123"), 0); 64 test(S("123"), 1); 65 test(S("123"), 2); 66 test(S("123"), 3); 67 } 68 #if TEST_STD_VER >= 11 69 { 70 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 71 test(S(), 0); 72 test(S("123"), 0); 73 test(S("123"), 1); 74 test(S("123"), 2); 75 test(S("123"), 3); 76 } 77 #endif 78 } 79
