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 // operator+=(const basic_string<charT,traits,Allocator>& str); 14 15 #include <string> 16 #include <cassert> 17 18 template <class S> 19 void 20 test(S s, S str, S expected) 21 { 22 s += str; 23 assert(s.__invariants()); 24 assert(s == expected); 25 } 26 27 int main() 28 { 29 typedef std::string S; 30 test(S(), S(), S()); 31 test(S(), S("12345"), S("12345")); 32 test(S(), S("1234567890"), S("1234567890")); 33 test(S(), S("12345678901234567890"), S("12345678901234567890")); 34 35 test(S("12345"), S(), S("12345")); 36 test(S("12345"), S("12345"), S("1234512345")); 37 test(S("12345"), S("1234567890"), S("123451234567890")); 38 test(S("12345"), S("12345678901234567890"), S("1234512345678901234567890")); 39 40 test(S("1234567890"), S(), S("1234567890")); 41 test(S("1234567890"), S("12345"), S("123456789012345")); 42 test(S("1234567890"), S("1234567890"), S("12345678901234567890")); 43 test(S("1234567890"), S("12345678901234567890"), S("123456789012345678901234567890")); 44 45 test(S("12345678901234567890"), S(), S("12345678901234567890")); 46 test(S("12345678901234567890"), S("12345"), S("1234567890123456789012345")); 47 test(S("12345678901234567890"), S("1234567890"), S("123456789012345678901234567890")); 48 test(S("12345678901234567890"), S("12345678901234567890"), 49 S("1234567890123456789012345678901234567890")); 50 } 51
