libcxx/test/std/strings/basic.string/string.contains/contains.ptr.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 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
   9
  10 // <string>
  11
  12 // constexpr bool contains(const CharT *x) const;
  13
  14 #include <string>
  15 #include <cassert>
  16
  17 #include "test_macros.h"
  18
  19 template <class S>
  20 constexpr void test_string() {
  21   const char* s = "abcde";
  22   S s0;
  23   S s1{s + 4, 1};
  24   S s3{s + 2, 3};
  25   S sNot{"xyz", 3};
  26
  27   assert(s0.contains(""));
  28   assert(!s0.contains("e"));
  29
  30   assert(s1.contains(""));
  31   assert(!s1.contains("d"));
  32   assert(s1.contains("e"));
  33   assert(!s1.contains("de"));
  34   assert(!s1.contains("cd"));
  35   assert(!s1.contains("cde"));
  36   assert(!s1.contains("bcde"));
  37   assert(!s1.contains("abcde"));
  38   assert(!s1.contains("xyz"));
  39
  40   assert(s3.contains(""));
  41   assert(s3.contains("d"));
  42   assert(s3.contains("e"));
  43   assert(s3.contains("de"));
  44   assert(s3.contains("cd"));
  45   assert(!s3.contains("ce"));
  46   assert(s3.contains("cde"));
  47   assert(!s3.contains("edc"));
  48   assert(!s3.contains("bcde"));
  49   assert(!s3.contains("abcde"));
  50   assert(!s3.contains("xyz"));
  51
  52   assert(sNot.contains(""));
  53   assert(!sNot.contains("d"));
  54   assert(!sNot.contains("e"));
  55   assert(!sNot.contains("de"));
  56   assert(!sNot.contains("cd"));
  57   assert(!sNot.contains("cde"));
  58   assert(!sNot.contains("bcde"));
  59   assert(!sNot.contains("abcde"));
  60   assert(sNot.contains("xyz"));
  61   assert(!sNot.contains("zyx"));
  62 }
  63
  64 constexpr bool test() {
  65   test_string<std::string>();
  66
  67   return true;
  68 }
  69
  70 int main(int, char**) {
  71   test();
  72   static_assert(test());
  73
  74   return 0;
  75 }