libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/pointer.pass.cpp

   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 // basic_string<charT,traits,Allocator>& operator+=(const charT* s);
  12
  13 #include <string>
  14 #include <cassert>
  15
  16 #include "test_macros.h"
  17 #include "min_allocator.h"
  18
  19 template <class S>
  20 void
  21 test(S s, const typename S::value_type* str, S expected)
  22 {
  23     s += str;
  24     LIBCPP_ASSERT(s.__invariants());
  25     assert(s == expected);
  26 }
  27
  28 int main(int, char**)
  29 {
  30     {
  31     typedef std::string S;
  32     test(S(), "", S());
  33     test(S(), "12345", S("12345"));
  34     test(S(), "1234567890", S("1234567890"));
  35     test(S(), "12345678901234567890", S("12345678901234567890"));
  36
  37     test(S("12345"), "", S("12345"));
  38     test(S("12345"), "12345", S("1234512345"));
  39     test(S("12345"), "1234567890", S("123451234567890"));
  40     test(S("12345"), "12345678901234567890", S("1234512345678901234567890"));
  41
  42     test(S("1234567890"), "", S("1234567890"));
  43     test(S("1234567890"), "12345", S("123456789012345"));
  44     test(S("1234567890"), "1234567890", S("12345678901234567890"));
  45     test(S("1234567890"), "12345678901234567890", S("123456789012345678901234567890"));
  46
  47     test(S("12345678901234567890"), "", S("12345678901234567890"));
  48     test(S("12345678901234567890"), "12345", S("1234567890123456789012345"));
  49     test(S("12345678901234567890"), "1234567890", S("123456789012345678901234567890"));
  50     test(S("12345678901234567890"), "12345678901234567890",
  51          S("1234567890123456789012345678901234567890"));
  52     }
  53 #if TEST_STD_VER >= 11
  54     {
  55     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
  56     test(S(), "", S());
  57     test(S(), "12345", S("12345"));
  58     test(S(), "1234567890", S("1234567890"));
  59     test(S(), "12345678901234567890", S("12345678901234567890"));
  60
  61     test(S("12345"), "", S("12345"));
  62     test(S("12345"), "12345", S("1234512345"));
  63     test(S("12345"), "1234567890", S("123451234567890"));
  64     test(S("12345"), "12345678901234567890", S("1234512345678901234567890"));
  65
  66     test(S("1234567890"), "", S("1234567890"));
  67     test(S("1234567890"), "12345", S("123456789012345"));
  68     test(S("1234567890"), "1234567890", S("12345678901234567890"));
  69     test(S("1234567890"), "12345678901234567890", S("123456789012345678901234567890"));
  70
  71     test(S("12345678901234567890"), "", S("12345678901234567890"));
  72     test(S("12345678901234567890"), "12345", S("1234567890123456789012345"));
  73     test(S("12345678901234567890"), "1234567890", S("123456789012345678901234567890"));
  74     test(S("12345678901234567890"), "12345678901234567890",
  75          S("1234567890123456789012345678901234567890"));
  76     }
  77 #endif
  78
  79   return 0;
  80 }