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 "test_macros.h" 21 #include "min_allocator.h" 22 23 template <class S> 24 void 25 test(S s, S str, typename S::size_type pos, typename S::size_type n, S expected) 26 { 27 if (pos <= str.size()) 28 { 29 s.assign(str, pos, n); 30 LIBCPP_ASSERT(s.__invariants()); 31 assert(s == expected); 32 } 33 #ifndef TEST_HAS_NO_EXCEPTIONS 34 else 35 { 36 try 37 { 38 s.assign(str, pos, n); 39 assert(false); 40 } 41 catch (std::out_of_range&) 42 { 43 assert(pos > str.size()); 44 } 45 } 46 #endif 47 } 48 49 template <class S> 50 void 51 test_npos(S s, S str, typename S::size_type pos, S expected) 52 { 53 if (pos <= str.size()) 54 { 55 s.assign(str, pos); 56 LIBCPP_ASSERT(s.__invariants()); 57 assert(s == expected); 58 } 59 #ifndef TEST_HAS_NO_EXCEPTIONS 60 else 61 { 62 try 63 { 64 s.assign(str, pos); 65 assert(false); 66 } 67 catch (std::out_of_range&) 68 { 69 assert(pos > str.size()); 70 } 71 } 72 #endif 73 } 74 75 int main() 76 { 77 { 78 typedef std::string S; 79 test(S(), S(), 0, 0, S()); 80 test(S(), S(), 1, 0, S()); 81 test(S(), S("12345"), 0, 3, S("123")); 82 test(S(), S("12345"), 1, 4, S("2345")); 83 test(S(), S("12345"), 3, 15, S("45")); 84 test(S(), S("12345"), 5, 15, S("")); 85 test(S(), S("12345"), 6, 15, S("not happening")); 86 test(S(), S("12345678901234567890"), 0, 0, S()); 87 test(S(), S("12345678901234567890"), 1, 1, S("2")); 88 test(S(), S("12345678901234567890"), 2, 3, S("345")); 89 test(S(), S("12345678901234567890"), 12, 13, S("34567890")); 90 test(S(), S("12345678901234567890"), 21, 13, S("not happening")); 91 92 test(S("12345"), S(), 0, 0, S()); 93 test(S("12345"), S("12345"), 2, 2, S("34")); 94 test(S("12345"), S("1234567890"), 0, 100, S("1234567890")); 95 96 test(S("12345678901234567890"), S(), 0, 0, S()); 97 test(S("12345678901234567890"), S("12345"), 1, 3, S("234")); 98 test(S("12345678901234567890"), S("12345678901234567890"), 5, 10, 99 S("6789012345")); 100 } 101 #if TEST_STD_VER >= 11 102 { 103 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 104 test(S(), S(), 0, 0, S()); 105 test(S(), S(), 1, 0, S()); 106 test(S(), S("12345"), 0, 3, S("123")); 107 test(S(), S("12345"), 1, 4, S("2345")); 108 test(S(), S("12345"), 3, 15, S("45")); 109 test(S(), S("12345"), 5, 15, S("")); 110 test(S(), S("12345"), 6, 15, S("not happening")); 111 test(S(), S("12345678901234567890"), 0, 0, S()); 112 test(S(), S("12345678901234567890"), 1, 1, S("2")); 113 test(S(), S("12345678901234567890"), 2, 3, S("345")); 114 test(S(), S("12345678901234567890"), 12, 13, S("34567890")); 115 test(S(), S("12345678901234567890"), 21, 13, S("not happening")); 116 117 test(S("12345"), S(), 0, 0, S()); 118 test(S("12345"), S("12345"), 2, 2, S("34")); 119 test(S("12345"), S("1234567890"), 0, 100, S("1234567890")); 120 121 test(S("12345678901234567890"), S(), 0, 0, S()); 122 test(S("12345678901234567890"), S("12345"), 1, 3, S("234")); 123 test(S("12345678901234567890"), S("12345678901234567890"), 5, 10, 124 S("6789012345")); 125 } 126 #endif 127 { 128 typedef std::string S; 129 test_npos(S(), S(), 0, S()); 130 test_npos(S(), S(), 1, S()); 131 test_npos(S(), S("12345"), 0, S("12345")); 132 test_npos(S(), S("12345"), 1, S("2345")); 133 test_npos(S(), S("12345"), 3, S("45")); 134 test_npos(S(), S("12345"), 5, S("")); 135 test_npos(S(), S("12345"), 6, S("not happening")); 136 } 137 } 138
