| //===----------------------------------------------------------------------===// |
| // |
| // 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++98, c++03, c++11, c++14, c++17 |
| |
| // <string> |
| |
| // bool starts_with(const CharT *x) const; |
| |
| #include <string> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| int main(int, char**) |
| { |
| { |
| typedef std::string S; |
| const char *s = "abcde"; |
| S s0 {}; |
| S s1 { s, 1 }; |
| S s2 { s, 2 }; |
| // S s3 { s, 3 }; |
| // S s4 { s, 4 }; |
| // S s5 { s, 5 }; |
| S sNot {"def", 3 }; |
| |
| LIBCPP_ASSERT_NOEXCEPT(s0.starts_with("")); |
| |
| assert ( s0.starts_with("")); |
| assert (!s0.starts_with("a")); |
| |
| assert ( s1.starts_with("")); |
| assert ( s1.starts_with("a")); |
| assert (!s1.starts_with("ab")); |
| assert (!s1.starts_with("abc")); |
| assert (!s1.starts_with("abcd")); |
| assert (!s1.starts_with("abcde")); |
| assert (!s1.starts_with("def")); |
| |
| assert ( s2.starts_with("")); |
| assert ( s2.starts_with("a")); |
| assert ( s2.starts_with("ab")); |
| assert (!s2.starts_with("abc")); |
| assert (!s2.starts_with("abcd")); |
| assert (!s2.starts_with("abcde")); |
| assert (!s2.starts_with("def")); |
| |
| assert ( sNot.starts_with("")); |
| assert (!sNot.starts_with("a")); |
| assert (!sNot.starts_with("ab")); |
| assert (!sNot.starts_with("abc")); |
| assert (!sNot.starts_with("abcd")); |
| assert (!sNot.starts_with("abcde")); |
| assert ( sNot.starts_with("def")); |
| } |
| |
| return 0; |
| } |