74 lines
1.8 KiB
C++
74 lines
1.8 KiB
C++
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//===----------------------------------------------------------------------===//
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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, c++20
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// <string_view>
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// constexpr bool contains(const CharT *x) const;
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#include <string_view>
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#include <cassert>
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#include "test_macros.h"
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constexpr bool test() {
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using SV = std::string_view;
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const char* s = "abcde";
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SV sv0;
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SV sv1{s + 4, 1};
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SV sv3{s + 2, 3};
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SV svNot{"xyz", 3};
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assert(sv0.contains(""));
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assert(!sv0.contains("e"));
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assert(sv1.contains(""));
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assert(!sv1.contains("d"));
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assert(sv1.contains("e"));
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assert(!sv1.contains("de"));
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assert(!sv1.contains("cd"));
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assert(!sv1.contains("cde"));
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assert(!sv1.contains("bcde"));
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assert(!sv1.contains("abcde"));
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assert(!sv1.contains("xyz"));
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assert(sv3.contains(""));
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assert(sv3.contains("d"));
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assert(sv3.contains("e"));
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assert(sv3.contains("de"));
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assert(sv3.contains("cd"));
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assert(!sv3.contains("ce"));
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assert(sv3.contains("cde"));
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assert(!sv3.contains("edc"));
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assert(!sv3.contains("bcde"));
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assert(!sv3.contains("abcde"));
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assert(!sv3.contains("xyz"));
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assert(svNot.contains(""));
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assert(!svNot.contains("d"));
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assert(!svNot.contains("e"));
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assert(!svNot.contains("de"));
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assert(!svNot.contains("cd"));
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assert(!svNot.contains("cde"));
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assert(!svNot.contains("bcde"));
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assert(!svNot.contains("abcde"));
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assert(svNot.contains("xyz"));
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assert(!svNot.contains("zyx"));
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return true;
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}
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int main(int, char**) {
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test();
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static_assert(test());
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return 0;
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}
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