size_string.pass.cpp | Explore in Territory

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// <string>

// basic_string<charT,traits,Allocator>&
//   insert(size_type pos1, const basic_string& str); // constexpr since C++20

#include <string>
#include <stdexcept>
#include <cassert>

#include "test_macros.h"
#include "min_allocator.h"
#include "asan_testing.h"

template <class S>
TEST_CONSTEXPR_CXX20 void test(S s, typename S::size_type pos, S str, S expected) {
  const typename S::size_type old_size = s.size();
  S s0                                 = s;
  if (pos <= old_size) {
    s.insert(pos, str);
    LIBCPP_ASSERT(s.__invariants());
    assert(s == expected);
    LIBCPP_ASSERT(is_string_asan_correct(s));
  }
#ifndef TEST_HAS_NO_EXCEPTIONS
  else if (!TEST_IS_CONSTANT_EVALUATED) {
    try {
      s.insert(pos, str);
      assert(false);
    } catch (std::out_of_range&) {
      assert(pos > old_size);
      assert(s == s0);
    }
  }
#endif
}

template <class S>
TEST_CONSTEXPR_CXX20 void test_string() {
  test(S(""), 0, S(""), S(""));
  test(S(""), 0, S("12345"), S("12345"));
  test(S(""), 0, S("1234567890"), S("1234567890"));
  test(S(""), 0, S("12345678901234567890"), S("12345678901234567890"));
  test(S(""), 1, S(""), S("can't happen"));
  test(S(""), 1, S("12345"), S("can't happen"));
  test(S(""), 1, S("1234567890"), S("can't happen"));
  test(S(""), 1, S("12345678901234567890"), S("can't happen"));
  test(S("abcde"), 0, S(""), S("abcde"));
  test(S("abcde"), 0, S("12345"), S("12345abcde"));
  test(S("abcde"), 0, S("1234567890"), S("1234567890abcde"));
  test(S("abcde"), 0, S("12345678901234567890"), S("12345678901234567890abcde"));
  test(S("abcde"), 1, S(""), S("abcde"));
  test(S("abcde"), 1, S("12345"), S("a12345bcde"));
  test(S("abcde"), 1, S("1234567890"), S("a1234567890bcde"));
  test(S("abcde"), 1, S("12345678901234567890"), S("a12345678901234567890bcde"));
  test(S("abcde"), 2, S(""), S("abcde"));
  test(S("abcde"), 2, S("12345"), S("ab12345cde"));
  test(S("abcde"), 2, S("1234567890"), S("ab1234567890cde"));
  test(S("abcde"), 2, S("12345678901234567890"), S("ab12345678901234567890cde"));
  test(S("abcde"), 4, S(""), S("abcde"));
  test(S("abcde"), 4, S("12345"), S("abcd12345e"));
  test(S("abcde"), 4, S("1234567890"), S("abcd1234567890e"));
  test(S("abcde"), 4, S("12345678901234567890"), S("abcd12345678901234567890e"));
  test(S("abcde"), 5, S(""), S("abcde"));
  test(S("abcde"), 5, S("12345"), S("abcde12345"));
  test(S("abcde"), 5, S("1234567890"), S("abcde1234567890"));
  test(S("abcde"), 5, S("12345678901234567890"), S("abcde12345678901234567890"));
  test(S("abcde"), 6, S(""), S("can't happen"));
  test(S("abcde"), 6, S("12345"), S("can't happen"));
  test(S("abcde"), 6, S("1234567890"), S("can't happen"));
  test(S("abcde"), 6, S("12345678901234567890"), S("can't happen"));
  test(S("abcdefghij"), 0, S(""), S("abcdefghij"));
  test(S("abcdefghij"), 0, S("12345"), S("12345abcdefghij"));
  test(S("abcdefghij"), 0, S("1234567890"), S("1234567890abcdefghij"));
  test(S("abcdefghij"), 0, S("12345678901234567890"), S("12345678901234567890abcdefghij"));
  test(S("abcdefghij"), 1, S(""), S("abcdefghij"));
  test(S("abcdefghij"), 1, S("12345"), S("a12345bcdefghij"));
  test(S("abcdefghij"), 1, S("1234567890"), S("a1234567890bcdefghij"));
  test(S("abcdefghij"), 1, S("12345678901234567890"), S("a12345678901234567890bcdefghij"));
  test(S("abcdefghij"), 5, S(""), S("abcdefghij"));
  test(S("abcdefghij"), 5, S("12345"), S("abcde12345fghij"));
  test(S("abcdefghij"), 5, S("1234567890"), S("abcde1234567890fghij"));
  test(S("abcdefghij"), 5, S("12345678901234567890"), S("abcde12345678901234567890fghij"));
  test(S("abcdefghij"), 9, S(""), S("abcdefghij"));
  test(S("abcdefghij"), 9, S("12345"), S("abcdefghi12345j"));
  test(S("abcdefghij"), 9, S("1234567890"), S("abcdefghi1234567890j"));
  test(S("abcdefghij"), 9, S("12345678901234567890"), S("abcdefghi12345678901234567890j"));
  test(S("abcdefghij"), 10, S(""), S("abcdefghij"));
  test(S("abcdefghij"), 10, S("12345"), S("abcdefghij12345"));
  test(S("abcdefghij"), 10, S("1234567890"), S("abcdefghij1234567890"));
  test(S("abcdefghij"), 10, S("12345678901234567890"), S("abcdefghij12345678901234567890"));
  test(S("abcdefghij"), 11, S(""), S("can't happen"));
  test(S("abcdefghij"), 11, S("12345"), S("can't happen"));
  test(S("abcdefghij"), 11, S("1234567890"), S("can't happen"));
  test(S("abcdefghij"), 11, S("12345678901234567890"), S("can't happen"));
  test(S("abcdefghijklmnopqrst"), 0, S(""), S("abcdefghijklmnopqrst"));
  test(S("abcdefghijklmnopqrst"), 0, S("12345"), S("12345abcdefghijklmnopqrst"));
  test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), S("1234567890abcdefghijklmnopqrst"));
  test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), S("12345678901234567890abcdefghijklmnopqrst"));
  test(S("abcdefghijklmnopqrst"), 1, S(""), S("abcdefghijklmnopqrst"));
  test(S("abcdefghijklmnopqrst"), 1, S("12345"), S("a12345bcdefghijklmnopqrst"));
  test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), S("a1234567890bcdefghijklmnopqrst"));
  test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), S("a12345678901234567890bcdefghijklmnopqrst"));
  test(S("abcdefghijklmnopqrst"), 10, S(""), S("abcdefghijklmnopqrst"));
  test(S("abcdefghijklmnopqrst"), 10, S("12345"), S("abcdefghij12345klmnopqrst"));
  test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), S("abcdefghij1234567890klmnopqrst"));
  test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), S("abcdefghij12345678901234567890klmnopqrst"));
  test(S("abcdefghijklmnopqrst"), 19, S(""), S("abcdefghijklmnopqrst"));
  test(S("abcdefghijklmnopqrst"), 19, S("12345"), S("abcdefghijklmnopqrs12345t"));
  test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), S("abcdefghijklmnopqrs1234567890t"));
  test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890t"));
  test(S("abcdefghijklmnopqrst"), 20, S(""), S("abcdefghijklmnopqrst"));
  test(S("abcdefghijklmnopqrst"), 20, S("12345"), S("abcdefghijklmnopqrst12345"));
  test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), S("abcdefghijklmnopqrst1234567890"));
  test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), S("abcdefghijklmnopqrst12345678901234567890"));
  test(S("abcdefghijklmnopqrst"), 21, S(""), S("can't happen"));
  test(S("abcdefghijklmnopqrst"), 21, S("12345"), S("can't happen"));
  test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), S("can't happen"));
  test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), S("can't happen"));
}

TEST_CONSTEXPR_CXX20 bool test() {
  test_string<std::string>();
#if TEST_STD_VER >= 11
  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
  test_string<std::basic_string<char, std::char_traits<char>, safe_allocator<char>>>();
#endif

#if TEST_STD_VER >= 11
  { // LWG 2946
    std::string s;
    s.insert(0, {"abc", 1});
    assert(s.size() == 1);
    assert(s == "a");
  }
#endif

  return true;
}

int main(int, char**) {
  test();
#if TEST_STD_VER > 17
  static_assert(test());
#endif

  return 0;
}
llvm/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_string.pass.cpp
