libcxx/test/std/strings/basic.string/string.modifiers/string_insert/string_view.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>&
  12 //   insert(size_type pos, string_view sv);
  13
  14 #include <string>
  15 #include <stdexcept>
  16 #include <cassert>
  17
  18 #include "test_macros.h"
  19 #include "min_allocator.h"
  20
  21 template <class S, class SV>
  22 void
  23 test(S s, typename S::size_type pos, SV sv, S expected)
  24 {
  25     const typename S::size_type old_size = s.size();
  26     S s0 = s;
  27     if (pos <= old_size)
  28     {
  29         s.insert(pos, sv);
  30         LIBCPP_ASSERT(s.__invariants());
  31         assert(s == expected);
  32     }
  33 #ifndef TEST_HAS_NO_EXCEPTIONS
  34     else
  35     {
  36         try
  37         {
  38             s.insert(pos, sv);
  39             assert(false);
  40         }
  41         catch (std::out_of_range&)
  42         {
  43             assert(pos > old_size);
  44             assert(s == s0);
  45         }
  46     }
  47 #endif
  48 }
  49
  50 int main(int, char**)
  51 {
  52     {
  53     typedef std::string S;
  54     typedef std::string_view SV;
  55     test(S(""), 0, SV(""), S(""));
  56     test(S(""), 0, SV("12345"), S("12345"));
  57     test(S(""), 0, SV("1234567890"), S("1234567890"));
  58     test(S(""), 0, SV("12345678901234567890"), S("12345678901234567890"));
  59     test(S(""), 1, SV(""), S("can't happen"));
  60     test(S(""), 1, SV("12345"), S("can't happen"));
  61     test(S(""), 1, SV("1234567890"), S("can't happen"));
  62     test(S(""), 1, SV("12345678901234567890"), S("can't happen"));
  63     test(S("abcde"), 0, SV(""), S("abcde"));
  64     test(S("abcde"), 0, SV("12345"), S("12345abcde"));
  65     test(S("abcde"), 0, SV("1234567890"), S("1234567890abcde"));
  66     test(S("abcde"), 0, SV("12345678901234567890"), S("12345678901234567890abcde"));
  67     test(S("abcde"), 1, SV(""), S("abcde"));
  68     test(S("abcde"), 1, SV("12345"), S("a12345bcde"));
  69     test(S("abcde"), 1, SV("1234567890"), S("a1234567890bcde"));
  70     test(S("abcde"), 1, SV("12345678901234567890"), S("a12345678901234567890bcde"));
  71     test(S("abcde"), 2, SV(""), S("abcde"));
  72     test(S("abcde"), 2, SV("12345"), S("ab12345cde"));
  73     test(S("abcde"), 2, SV("1234567890"), S("ab1234567890cde"));
  74     test(S("abcde"), 2, SV("12345678901234567890"), S("ab12345678901234567890cde"));
  75     test(S("abcde"), 4, SV(""), S("abcde"));
  76     test(S("abcde"), 4, SV("12345"), S("abcd12345e"));
  77     test(S("abcde"), 4, SV("1234567890"), S("abcd1234567890e"));
  78     test(S("abcde"), 4, SV("12345678901234567890"), S("abcd12345678901234567890e"));
  79     test(S("abcde"), 5, SV(""), S("abcde"));
  80     test(S("abcde"), 5, SV("12345"), S("abcde12345"));
  81     test(S("abcde"), 5, SV("1234567890"), S("abcde1234567890"));
  82     test(S("abcde"), 5, SV("12345678901234567890"), S("abcde12345678901234567890"));
  83     test(S("abcde"), 6, SV(""), S("can't happen"));
  84     test(S("abcde"), 6, SV("12345"), S("can't happen"));
  85     test(S("abcde"), 6, SV("1234567890"), S("can't happen"));
  86     test(S("abcde"), 6, SV("12345678901234567890"), S("can't happen"));
  87     test(S("abcdefghij"), 0, SV(""), S("abcdefghij"));
  88     test(S("abcdefghij"), 0, SV("12345"), S("12345abcdefghij"));
  89     test(S("abcdefghij"), 0, SV("1234567890"), S("1234567890abcdefghij"));
  90     test(S("abcdefghij"), 0, SV("12345678901234567890"), S("12345678901234567890abcdefghij"));
  91     test(S("abcdefghij"), 1, SV(""), S("abcdefghij"));
  92     test(S("abcdefghij"), 1, SV("12345"), S("a12345bcdefghij"));
  93     test(S("abcdefghij"), 1, SV("1234567890"), S("a1234567890bcdefghij"));
  94     test(S("abcdefghij"), 1, SV("12345678901234567890"), S("a12345678901234567890bcdefghij"));
  95     test(S("abcdefghij"), 5, SV(""), S("abcdefghij"));
  96     test(S("abcdefghij"), 5, SV("12345"), S("abcde12345fghij"));
  97     test(S("abcdefghij"), 5, SV("1234567890"), S("abcde1234567890fghij"));
  98     test(S("abcdefghij"), 5, SV("12345678901234567890"), S("abcde12345678901234567890fghij"));
  99     test(S("abcdefghij"), 9, SV(""), S("abcdefghij"));
 100     test(S("abcdefghij"), 9, SV("12345"), S("abcdefghi12345j"));
 101     test(S("abcdefghij"), 9, SV("1234567890"), S("abcdefghi1234567890j"));
 102     test(S("abcdefghij"), 9, SV("12345678901234567890"), S("abcdefghi12345678901234567890j"));
 103     test(S("abcdefghij"), 10, SV(""), S("abcdefghij"));
 104     test(S("abcdefghij"), 10, SV("12345"), S("abcdefghij12345"));
 105     test(S("abcdefghij"), 10, SV("1234567890"), S("abcdefghij1234567890"));
 106     test(S("abcdefghij"), 10, SV("12345678901234567890"), S("abcdefghij12345678901234567890"));
 107     test(S("abcdefghij"), 11, SV(""), S("can't happen"));
 108     test(S("abcdefghij"), 11, SV("12345"), S("can't happen"));
 109     test(S("abcdefghij"), 11, SV("1234567890"), S("can't happen"));
 110     test(S("abcdefghij"), 11, SV("12345678901234567890"), S("can't happen"));
 111     test(S("abcdefghijklmnopqrst"), 0, SV(""), S("abcdefghijklmnopqrst"));
 112     test(S("abcdefghijklmnopqrst"), 0, SV("12345"), S("12345abcdefghijklmnopqrst"));
 113     test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), S("1234567890abcdefghijklmnopqrst"));
 114     test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), S("12345678901234567890abcdefghijklmnopqrst"));
 115     test(S("abcdefghijklmnopqrst"), 1, SV(""), S("abcdefghijklmnopqrst"));
 116     test(S("abcdefghijklmnopqrst"), 1, SV("12345"), S("a12345bcdefghijklmnopqrst"));
 117     test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), S("a1234567890bcdefghijklmnopqrst"));
 118     test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), S("a12345678901234567890bcdefghijklmnopqrst"));
 119     test(S("abcdefghijklmnopqrst"), 10, SV(""), S("abcdefghijklmnopqrst"));
 120     test(S("abcdefghijklmnopqrst"), 10, SV("12345"), S("abcdefghij12345klmnopqrst"));
 121     test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), S("abcdefghij1234567890klmnopqrst"));
 122     test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), S("abcdefghij12345678901234567890klmnopqrst"));
 123     test(S("abcdefghijklmnopqrst"), 19, SV(""), S("abcdefghijklmnopqrst"));
 124     test(S("abcdefghijklmnopqrst"), 19, SV("12345"), S("abcdefghijklmnopqrs12345t"));
 125     test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), S("abcdefghijklmnopqrs1234567890t"));
 126     test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890t"));
 127     test(S("abcdefghijklmnopqrst"), 20, SV(""), S("abcdefghijklmnopqrst"));
 128     test(S("abcdefghijklmnopqrst"), 20, SV("12345"), S("abcdefghijklmnopqrst12345"));
 129     test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), S("abcdefghijklmnopqrst1234567890"));
 130     test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), S("abcdefghijklmnopqrst12345678901234567890"));
 131     test(S("abcdefghijklmnopqrst"), 21, SV(""), S("can't happen"));
 132     test(S("abcdefghijklmnopqrst"), 21, SV("12345"), S("can't happen"));
 133     test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), S("can't happen"));
 134     test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), S("can't happen"));
 135     }
 136 #if TEST_STD_VER >= 11
 137     {
 138     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
 139     typedef std::string_view SV;
 140     test(S(""), 0, SV(""), S(""));
 141     test(S(""), 0, SV("12345"), S("12345"));
 142     test(S(""), 0, SV("1234567890"), S("1234567890"));
 143     test(S(""), 0, SV("12345678901234567890"), S("12345678901234567890"));
 144     test(S(""), 1, SV(""), S("can't happen"));
 145     test(S(""), 1, SV("12345"), S("can't happen"));
 146     test(S(""), 1, SV("1234567890"), S("can't happen"));
 147     test(S(""), 1, SV("12345678901234567890"), S("can't happen"));
 148     test(S("abcde"), 0, SV(""), S("abcde"));
 149     test(S("abcde"), 0, SV("12345"), S("12345abcde"));
 150     test(S("abcde"), 0, SV("1234567890"), S("1234567890abcde"));
 151     test(S("abcde"), 0, SV("12345678901234567890"), S("12345678901234567890abcde"));
 152     test(S("abcde"), 1, SV(""), S("abcde"));
 153     test(S("abcde"), 1, SV("12345"), S("a12345bcde"));
 154     test(S("abcde"), 1, SV("1234567890"), S("a1234567890bcde"));
 155     test(S("abcde"), 1, SV("12345678901234567890"), S("a12345678901234567890bcde"));
 156     test(S("abcde"), 2, SV(""), S("abcde"));
 157     test(S("abcde"), 2, SV("12345"), S("ab12345cde"));
 158     test(S("abcde"), 2, SV("1234567890"), S("ab1234567890cde"));
 159     test(S("abcde"), 2, SV("12345678901234567890"), S("ab12345678901234567890cde"));
 160     test(S("abcde"), 4, SV(""), S("abcde"));
 161     test(S("abcde"), 4, SV("12345"), S("abcd12345e"));
 162     test(S("abcde"), 4, SV("1234567890"), S("abcd1234567890e"));
 163     test(S("abcde"), 4, SV("12345678901234567890"), S("abcd12345678901234567890e"));
 164     test(S("abcde"), 5, SV(""), S("abcde"));
 165     test(S("abcde"), 5, SV("12345"), S("abcde12345"));
 166     test(S("abcde"), 5, SV("1234567890"), S("abcde1234567890"));
 167     test(S("abcde"), 5, SV("12345678901234567890"), S("abcde12345678901234567890"));
 168     test(S("abcde"), 6, SV(""), S("can't happen"));
 169     test(S("abcde"), 6, SV("12345"), S("can't happen"));
 170     test(S("abcde"), 6, SV("1234567890"), S("can't happen"));
 171     test(S("abcde"), 6, SV("12345678901234567890"), S("can't happen"));
 172     test(S("abcdefghij"), 0, SV(""), S("abcdefghij"));
 173     test(S("abcdefghij"), 0, SV("12345"), S("12345abcdefghij"));
 174     test(S("abcdefghij"), 0, SV("1234567890"), S("1234567890abcdefghij"));
 175     test(S("abcdefghij"), 0, SV("12345678901234567890"), S("12345678901234567890abcdefghij"));
 176     test(S("abcdefghij"), 1, SV(""), S("abcdefghij"));
 177     test(S("abcdefghij"), 1, SV("12345"), S("a12345bcdefghij"));
 178     test(S("abcdefghij"), 1, SV("1234567890"), S("a1234567890bcdefghij"));
 179     test(S("abcdefghij"), 1, SV("12345678901234567890"), S("a12345678901234567890bcdefghij"));
 180     test(S("abcdefghij"), 5, SV(""), S("abcdefghij"));
 181     test(S("abcdefghij"), 5, SV("12345"), S("abcde12345fghij"));
 182     test(S("abcdefghij"), 5, SV("1234567890"), S("abcde1234567890fghij"));
 183     test(S("abcdefghij"), 5, SV("12345678901234567890"), S("abcde12345678901234567890fghij"));
 184     test(S("abcdefghij"), 9, SV(""), S("abcdefghij"));
 185     test(S("abcdefghij"), 9, SV("12345"), S("abcdefghi12345j"));
 186     test(S("abcdefghij"), 9, SV("1234567890"), S("abcdefghi1234567890j"));
 187     test(S("abcdefghij"), 9, SV("12345678901234567890"), S("abcdefghi12345678901234567890j"));
 188     test(S("abcdefghij"), 10, SV(""), S("abcdefghij"));
 189     test(S("abcdefghij"), 10, SV("12345"), S("abcdefghij12345"));
 190     test(S("abcdefghij"), 10, SV("1234567890"), S("abcdefghij1234567890"));
 191     test(S("abcdefghij"), 10, SV("12345678901234567890"), S("abcdefghij12345678901234567890"));
 192     test(S("abcdefghij"), 11, SV(""), S("can't happen"));
 193     test(S("abcdefghij"), 11, SV("12345"), S("can't happen"));
 194     test(S("abcdefghij"), 11, SV("1234567890"), S("can't happen"));
 195     test(S("abcdefghij"), 11, SV("12345678901234567890"), S("can't happen"));
 196     test(S("abcdefghijklmnopqrst"), 0, SV(""), S("abcdefghijklmnopqrst"));
 197     test(S("abcdefghijklmnopqrst"), 0, SV("12345"), S("12345abcdefghijklmnopqrst"));
 198     test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), S("1234567890abcdefghijklmnopqrst"));
 199     test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), S("12345678901234567890abcdefghijklmnopqrst"));
 200     test(S("abcdefghijklmnopqrst"), 1, SV(""), S("abcdefghijklmnopqrst"));
 201     test(S("abcdefghijklmnopqrst"), 1, SV("12345"), S("a12345bcdefghijklmnopqrst"));
 202     test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), S("a1234567890bcdefghijklmnopqrst"));
 203     test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), S("a12345678901234567890bcdefghijklmnopqrst"));
 204     test(S("abcdefghijklmnopqrst"), 10, SV(""), S("abcdefghijklmnopqrst"));
 205     test(S("abcdefghijklmnopqrst"), 10, SV("12345"), S("abcdefghij12345klmnopqrst"));
 206     test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), S("abcdefghij1234567890klmnopqrst"));
 207     test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), S("abcdefghij12345678901234567890klmnopqrst"));
 208     test(S("abcdefghijklmnopqrst"), 19, SV(""), S("abcdefghijklmnopqrst"));
 209     test(S("abcdefghijklmnopqrst"), 19, SV("12345"), S("abcdefghijklmnopqrs12345t"));
 210     test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), S("abcdefghijklmnopqrs1234567890t"));
 211     test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890t"));
 212     test(S("abcdefghijklmnopqrst"), 20, SV(""), S("abcdefghijklmnopqrst"));
 213     test(S("abcdefghijklmnopqrst"), 20, SV("12345"), S("abcdefghijklmnopqrst12345"));
 214     test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), S("abcdefghijklmnopqrst1234567890"));
 215     test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), S("abcdefghijklmnopqrst12345678901234567890"));
 216     test(S("abcdefghijklmnopqrst"), 21, SV(""), S("can't happen"));
 217     test(S("abcdefghijklmnopqrst"), 21, SV("12345"), S("can't happen"));
 218     test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), S("can't happen"));
 219     test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), S("can't happen"));
 220     }
 221 #endif
 222
 223     { // test inserting into self
 224     typedef std::string S;
 225     S s_short = "123/";
 226     S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
 227
 228     s_short.insert(0, s_short.c_str());
 229     assert(s_short == "123/123/");
 230     s_short.insert(0, s_short.c_str());
 231     assert(s_short == "123/123/123/123/");
 232     s_short.insert(0, s_short.c_str());
 233     assert(s_short == "123/123/123/123/123/123/123/123/");
 234
 235     s_long.insert(0, s_long.c_str());
 236     assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
 237     }
 238
 239   return 0;
 240 }