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 // <string> 10 11 // template<class charT, class traits, class Allocator> 12 // basic_istream<charT,traits>& 13 // getline(basic_istream<charT,traits>& is, 14 // basic_string<charT,traits,Allocator>& str); 15 16 #include <string> 17 #include <sstream> 18 #include <cassert> 19 20 #include "min_allocator.h" 21 #include "test_macros.h" 22 23 int main(int, char**) { 24 { 25 std::istringstream in(" abc\n def\n ghij"); 26 std::string s("initial text"); 27 std::getline(in, s); 28 assert(in.good()); 29 assert(s == " abc"); 30 std::getline(in, s); 31 assert(in.good()); 32 assert(s == " def"); 33 std::getline(in, s); 34 assert(in.eof()); 35 assert(s == " ghij"); 36 } 37 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 38 { 39 std::wistringstream in(L" abc\n def\n ghij"); 40 std::wstring s(L"initial text"); 41 std::getline(in, s); 42 assert(in.good()); 43 assert(s == L" abc"); 44 std::getline(in, s); 45 assert(in.good()); 46 assert(s == L" def"); 47 std::getline(in, s); 48 assert(in.eof()); 49 assert(s == L" ghij"); 50 } 51 #endif 52 #if TEST_STD_VER >= 11 53 { 54 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 55 std::istringstream in(" abc\n def\n ghij"); 56 S s("initial text"); 57 std::getline(in, s); 58 assert(in.good()); 59 assert(s == " abc"); 60 std::getline(in, s); 61 assert(in.good()); 62 assert(s == " def"); 63 std::getline(in, s); 64 assert(in.eof()); 65 assert(s == " ghij"); 66 } 67 # ifndef TEST_HAS_NO_WIDE_CHARACTERS 68 { 69 typedef std::basic_string<wchar_t, std::char_traits<wchar_t>, min_allocator<wchar_t>> S; 70 std::wistringstream in(L" abc\n def\n ghij"); 71 S s(L"initial text"); 72 std::getline(in, s); 73 assert(in.good()); 74 assert(s == L" abc"); 75 std::getline(in, s); 76 assert(in.good()); 77 assert(s == L" def"); 78 std::getline(in, s); 79 assert(in.eof()); 80 assert(s == L" ghij"); 81 } 82 # endif // TEST_HAS_NO_WIDE_CHARACTERS 83 #endif // TEST_STD_VER >= 11 84 #ifndef TEST_HAS_NO_EXCEPTIONS 85 { 86 std::basic_stringbuf<char> sb("hello"); 87 std::basic_istream<char> is(&sb); 88 is.exceptions(std::ios_base::eofbit); 89 90 std::basic_string<char> s; 91 bool threw = false; 92 try { 93 std::getline(is, s); 94 } catch (std::ios::failure const&) { 95 threw = true; 96 } 97 98 assert(!is.bad()); 99 assert(!is.fail()); 100 assert(is.eof()); 101 assert(threw); 102 assert(s == "hello"); 103 } 104 # ifndef TEST_HAS_NO_WIDE_CHARACTERS 105 { 106 std::basic_stringbuf<wchar_t> sb(L"hello"); 107 std::basic_istream<wchar_t> is(&sb); 108 is.exceptions(std::ios_base::eofbit); 109 110 std::basic_string<wchar_t> s; 111 bool threw = false; 112 try { 113 std::getline(is, s); 114 } catch (std::ios::failure const&) { 115 threw = true; 116 } 117 118 assert(!is.bad()); 119 assert(!is.fail()); 120 assert(is.eof()); 121 assert(threw); 122 assert(s == L"hello"); 123 } 124 # endif 125 126 { 127 std::basic_stringbuf<char> sb; 128 std::basic_istream<char> is(&sb); 129 is.exceptions(std::ios_base::failbit); 130 131 std::basic_string<char> s; 132 bool threw = false; 133 try { 134 std::getline(is, s); 135 } catch (std::ios::failure const&) { 136 threw = true; 137 } 138 139 assert(!is.bad()); 140 assert(is.fail()); 141 assert(is.eof()); 142 assert(threw); 143 assert(s == ""); 144 } 145 # ifndef TEST_HAS_NO_WIDE_CHARACTERS 146 { 147 std::basic_stringbuf<wchar_t> sb; 148 std::basic_istream<wchar_t> is(&sb); 149 is.exceptions(std::ios_base::failbit); 150 151 std::basic_string<wchar_t> s; 152 bool threw = false; 153 try { 154 std::getline(is, s); 155 } catch (std::ios::failure const&) { 156 threw = true; 157 } 158 159 assert(!is.bad()); 160 assert(is.fail()); 161 assert(is.eof()); 162 assert(threw); 163 assert(s == L""); 164 } 165 # endif 166 #endif // TEST_HAS_NO_EXCEPTIONS 167 168 return 0; 169 } 170