64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// <string>
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// bool starts_with(const CharT *x) const;
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#include <string>
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#include <cassert>
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#include "test_macros.h"
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int main(int, char**)
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{
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{
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typedef std::string S;
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const char *s = "abcde";
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S s0 {};
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S s1 { s, 1 };
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S s2 { s, 2 };
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// S s3 { s, 3 };
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// S s4 { s, 4 };
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// S s5 { s, 5 };
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S sNot {"def", 3 };
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LIBCPP_ASSERT_NOEXCEPT(s0.starts_with(""));
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assert ( s0.starts_with(""));
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assert (!s0.starts_with("a"));
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assert ( s1.starts_with(""));
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assert ( s1.starts_with("a"));
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assert (!s1.starts_with("ab"));
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assert (!s1.starts_with("abc"));
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assert (!s1.starts_with("abcd"));
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assert (!s1.starts_with("abcde"));
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assert (!s1.starts_with("def"));
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assert ( s2.starts_with(""));
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assert ( s2.starts_with("a"));
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assert ( s2.starts_with("ab"));
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assert (!s2.starts_with("abc"));
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assert (!s2.starts_with("abcd"));
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assert (!s2.starts_with("abcde"));
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assert (!s2.starts_with("def"));
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assert ( sNot.starts_with(""));
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assert (!sNot.starts_with("a"));
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assert (!sNot.starts_with("ab"));
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assert (!sNot.starts_with("abc"));
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assert (!sNot.starts_with("abcd"));
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assert (!sNot.starts_with("abcde"));
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assert ( sNot.starts_with("def"));
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}
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return 0;
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}
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