70 lines
2.2 KiB
C++
70 lines
2.2 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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// <string>
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// template<class charT, class traits>
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// constexpr bool operator!=(basic_string_view<charT,traits> lhs, const charT* rhs);
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// template<class charT, class traits>
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// constexpr bool operator!=(const charT* lhs, basic_string_view<charT,traits> rhs);
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#include <experimental/string_view>
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#include <cassert>
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#include "constexpr_char_traits.hpp"
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template <class S>
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void
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test(S lhs, const typename S::value_type* rhs, bool x)
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{
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assert((lhs != rhs) == x);
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assert((rhs != lhs) == x);
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}
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int main()
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{
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{
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typedef std::experimental::string_view S;
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test(S(""), "", false);
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test(S(""), "abcde", true);
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test(S(""), "abcdefghij", true);
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test(S(""), "abcdefghijklmnopqrst", true);
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test(S("abcde"), "", true);
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test(S("abcde"), "abcde", false);
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test(S("abcde"), "abcdefghij", true);
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test(S("abcde"), "abcdefghijklmnopqrst", true);
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test(S("abcdefghij"), "", true);
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test(S("abcdefghij"), "abcde", true);
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test(S("abcdefghij"), "abcdefghij", false);
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test(S("abcdefghij"), "abcdefghijklmnopqrst", true);
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test(S("abcdefghijklmnopqrst"), "", true);
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test(S("abcdefghijklmnopqrst"), "abcde", true);
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test(S("abcdefghijklmnopqrst"), "abcdefghij", true);
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test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", false);
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}
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#if _LIBCPP_STD_VER > 11
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{
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typedef std::experimental::basic_string_view<char, constexpr_char_traits<char>> SV;
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constexpr SV sv1;
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constexpr SV sv2 { "abcde", 5 };
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static_assert (!(sv1 != ""), "" );
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static_assert (!("" != sv1), "" );
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static_assert ( sv1 != "abcde", "" );
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static_assert ( "abcde" != sv1, "" );
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static_assert (!(sv2 != "abcde"), "" );
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static_assert (!("abcde" != sv2), "" );
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static_assert ( sv2 != "abcde0", "" );
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static_assert ( "abcde0" != sv2, "" );
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}
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#endif
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}
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