libcxx/test/std/strings/string.view/string.view.comparison/opne.string_view.string.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 // template<class charT, class traits, class Allocator>
  12 //   bool operator!=(const basic_string<charT, traits, Allocator> &lhs, basic_string_view<charT,traits> rhs);
  13 // template<class charT, class traits, class Allocator>
  14 //   bool operator!=(basic_string_view<charT,traits> lhs, const basic_string<charT, traits, Allocator> &rhs);
  15
  16 #include <string_view>
  17 #include <string>
  18 #include <cassert>
  19
  20 #include "test_macros.h"
  21
  22 template <class S>
  23 void
  24 test(const std::string &lhs, S rhs, bool x)
  25 {
  26     assert((lhs != rhs) == x);
  27     assert((rhs != lhs) == x);
  28 }
  29
  30 int main(int, char**)
  31 {
  32     {
  33     typedef std::string_view S;
  34     test("", S(""), false);
  35     test("", S("abcde"), true);
  36     test("", S("abcdefghij"), true);
  37     test("", S("abcdefghijklmnopqrst"), true);
  38     test("abcde", S(""), true);
  39     test("abcde", S("abcde"), false);
  40     test("abcde", S("abcdefghij"), true);
  41     test("abcde", S("abcdefghijklmnopqrst"), true);
  42     test("abcdefghij", S(""), true);
  43     test("abcdefghij", S("abcde"), true);
  44     test("abcdefghij", S("abcdefghij"), false);
  45     test("abcdefghij", S("abcdefghijklmnopqrst"), true);
  46     test("abcdefghijklmnopqrst", S(""), true);
  47     test("abcdefghijklmnopqrst", S("abcde"), true);
  48     test("abcdefghijklmnopqrst", S("abcdefghij"), true);
  49     test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), false);
  50     }
  51
  52   return 0;
  53 }