| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20 |
| |
| // <string> |
| |
| // constexpr bool contains(const CharT *x) const; |
| |
| #include <string> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| template <class S> |
| constexpr void test_string() { |
| const char* s = "abcde"; |
| S s0; |
| S s1{s + 4, 1}; |
| S s3{s + 2, 3}; |
| S sNot{"xyz", 3}; |
| |
| assert(s0.contains("")); |
| assert(!s0.contains("e")); |
| |
| assert(s1.contains("")); |
| assert(!s1.contains("d")); |
| assert(s1.contains("e")); |
| assert(!s1.contains("de")); |
| assert(!s1.contains("cd")); |
| assert(!s1.contains("cde")); |
| assert(!s1.contains("bcde")); |
| assert(!s1.contains("abcde")); |
| assert(!s1.contains("xyz")); |
| |
| assert(s3.contains("")); |
| assert(s3.contains("d")); |
| assert(s3.contains("e")); |
| assert(s3.contains("de")); |
| assert(s3.contains("cd")); |
| assert(!s3.contains("ce")); |
| assert(s3.contains("cde")); |
| assert(!s3.contains("edc")); |
| assert(!s3.contains("bcde")); |
| assert(!s3.contains("abcde")); |
| assert(!s3.contains("xyz")); |
| |
| assert(sNot.contains("")); |
| assert(!sNot.contains("d")); |
| assert(!sNot.contains("e")); |
| assert(!sNot.contains("de")); |
| assert(!sNot.contains("cd")); |
| assert(!sNot.contains("cde")); |
| assert(!sNot.contains("bcde")); |
| assert(!sNot.contains("abcde")); |
| assert(sNot.contains("xyz")); |
| assert(!sNot.contains("zyx")); |
| } |
| |
| constexpr bool test() { |
| test_string<std::string>(); |
| |
| return true; |
| } |
| |
| int main(int, char**) { |
| test(); |
| static_assert(test()); |
| |
| return 0; |
| } |