libcxx/test/std/strings/basic.string/string.ends_with/ends_with.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
   9
  10 // <string>
  11
  12 // constexpr bool ends_with(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
  23   S s0;
  24   S s1{s + 4, 1};
  25   S s2{s + 3, 2};
  26   //  S   s3  { s + 2, 3 };
  27   //  S   s4  { s + 1, 4 };
  28   //  S   s5  { s,     5 };
  29   S sNot{"def", 3};
  30
  31   LIBCPP_ASSERT_NOEXCEPT(s0.ends_with(""));
  32
  33   assert(s0.ends_with(""));
  34   assert(!s0.ends_with("e"));
  35
  36   assert(s1.ends_with(""));
  37   assert(s1.ends_with("e"));
  38   assert(!s1.ends_with("de"));
  39   assert(!s1.ends_with("cde"));
  40   assert(!s1.ends_with("bcde"));
  41   assert(!s1.ends_with("abcde"));
  42   assert(!s1.ends_with("def"));
  43
  44   assert(s2.ends_with(""));
  45   assert(s2.ends_with("e"));
  46   assert(s2.ends_with("de"));
  47   assert(!s2.ends_with("cde"));
  48   assert(!s2.ends_with("bcde"));
  49   assert(!s2.ends_with("abcde"));
  50   assert(!s2.ends_with("def"));
  51
  52   assert(sNot.ends_with(""));
  53   assert(!sNot.ends_with("e"));
  54   assert(!sNot.ends_with("de"));
  55   assert(!sNot.ends_with("cde"));
  56   assert(!sNot.ends_with("bcde"));
  57   assert(!sNot.ends_with("abcde"));
  58   assert(sNot.ends_with("def"));
  59 }
  60
  61 constexpr bool test() {
  62   test_string<std::string>();
  63
  64   return true;
  65 }
  66
  67 int main(int, char**) {
  68   test();
  69   static_assert(test());
  70
  71   return 0;
  72 }