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 // basic_string<charT,traits,Allocator>& 13 // assign(const basic_string<charT,traits>& str, size_type pos, size_type n=npos); 14 // the =npos was added for C++14 15 16 #include <string> 17 #include <stdexcept> 18 #include <cassert> 19 20 #include "min_allocator.h" 21 22 template <class S> 23 void 24 test(S s, S str, typename S::size_type pos, typename S::size_type n, S expected) 25 { 26 try 27 { 28 s.assign(str, pos, n); 29 assert(s.__invariants()); 30 assert(pos <= str.size()); 31 assert(s == expected); 32 } 33 catch (std::out_of_range&) 34 { 35 assert(pos > str.size()); 36 } 37 } 38 39 template <class S> 40 void 41 test_npos(S s, S str, typename S::size_type pos, S expected) 42 { 43 try 44 { 45 s.assign(str, pos); 46 assert(s.__invariants()); 47 assert(pos <= str.size()); 48 assert(s == expected); 49 } 50 catch (std::out_of_range&) 51 { 52 assert(pos > str.size()); 53 } 54 } 55 56 int main() 57 { 58 { 59 typedef std::string S; 60 test(S(), S(), 0, 0, S()); 61 test(S(), S(), 1, 0, S()); 62 test(S(), S("12345"), 0, 3, S("123")); 63 test(S(), S("12345"), 1, 4, S("2345")); 64 test(S(), S("12345"), 3, 15, S("45")); 65 test(S(), S("12345"), 5, 15, S("")); 66 test(S(), S("12345"), 6, 15, S("not happening")); 67 test(S(), S("12345678901234567890"), 0, 0, S()); 68 test(S(), S("12345678901234567890"), 1, 1, S("2")); 69 test(S(), S("12345678901234567890"), 2, 3, S("345")); 70 test(S(), S("12345678901234567890"), 12, 13, S("34567890")); 71 test(S(), S("12345678901234567890"), 21, 13, S("not happening")); 72 73 test(S("12345"), S(), 0, 0, S()); 74 test(S("12345"), S("12345"), 2, 2, S("34")); 75 test(S("12345"), S("1234567890"), 0, 100, S("1234567890")); 76 77 test(S("12345678901234567890"), S(), 0, 0, S()); 78 test(S("12345678901234567890"), S("12345"), 1, 3, S("234")); 79 test(S("12345678901234567890"), S("12345678901234567890"), 5, 10, 80 S("6789012345")); 81 } 82 #if __cplusplus >= 201103L 83 { 84 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 85 test(S(), S(), 0, 0, S()); 86 test(S(), S(), 1, 0, S()); 87 test(S(), S("12345"), 0, 3, S("123")); 88 test(S(), S("12345"), 1, 4, S("2345")); 89 test(S(), S("12345"), 3, 15, S("45")); 90 test(S(), S("12345"), 5, 15, S("")); 91 test(S(), S("12345"), 6, 15, S("not happening")); 92 test(S(), S("12345678901234567890"), 0, 0, S()); 93 test(S(), S("12345678901234567890"), 1, 1, S("2")); 94 test(S(), S("12345678901234567890"), 2, 3, S("345")); 95 test(S(), S("12345678901234567890"), 12, 13, S("34567890")); 96 test(S(), S("12345678901234567890"), 21, 13, S("not happening")); 97 98 test(S("12345"), S(), 0, 0, S()); 99 test(S("12345"), S("12345"), 2, 2, S("34")); 100 test(S("12345"), S("1234567890"), 0, 100, S("1234567890")); 101 102 test(S("12345678901234567890"), S(), 0, 0, S()); 103 test(S("12345678901234567890"), S("12345"), 1, 3, S("234")); 104 test(S("12345678901234567890"), S("12345678901234567890"), 5, 10, 105 S("6789012345")); 106 } 107 #endif 108 { 109 typedef std::string S; 110 test_npos(S(), S(), 0, S()); 111 test_npos(S(), S(), 1, S()); 112 test_npos(S(), S("12345"), 0, S("12345")); 113 test_npos(S(), S("12345"), 1, S("2345")); 114 test_npos(S(), S("12345"), 3, S("45")); 115 test_npos(S(), S("12345"), 5, S("")); 116 test_npos(S(), S("12345"), 6, S("not happening")); 117 } 118 } 119
