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8148a70b20
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@319994 91177308-0d34-0410-b5e6-96231b3b80d8
73 lines
1.8 KiB
C++
73 lines
1.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
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// <string>
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// bool starts_with(string_view x) const noexcept;
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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()
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{
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{
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typedef std::string S;
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typedef std::string_view SV;
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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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SV sv0;
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SV sv1 { s, 1 };
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SV sv2 { s, 2 };
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SV sv3 { s, 3 };
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SV sv4 { s, 4 };
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SV sv5 { s, 5 };
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SV svNot {"def", 3 };
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ASSERT_NOEXCEPT(s0.starts_with(sv0));
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assert ( s0.starts_with(sv0));
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assert (!s0.starts_with(sv1));
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assert ( s1.starts_with(sv0));
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assert ( s1.starts_with(sv1));
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assert (!s1.starts_with(sv2));
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assert (!s1.starts_with(sv3));
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assert (!s1.starts_with(sv4));
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assert (!s1.starts_with(sv5));
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assert (!s1.starts_with(svNot));
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assert ( s2.starts_with(sv0));
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assert ( s2.starts_with(sv1));
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assert ( s2.starts_with(sv2));
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assert (!s2.starts_with(sv3));
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assert (!s2.starts_with(sv4));
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assert (!s2.starts_with(sv5));
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assert (!s2.starts_with(svNot));
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assert ( sNot.starts_with(sv0));
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assert (!sNot.starts_with(sv1));
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assert (!sNot.starts_with(sv2));
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assert (!sNot.starts_with(sv3));
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assert (!sNot.starts_with(sv4));
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assert (!sNot.starts_with(sv5));
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assert ( sNot.starts_with(svNot));
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}
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}
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