opne.string_view.pointer.pass.cpp revision a90c6dd46005b2b14de3bb889a8d03bb34bd3256 
1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <string>
11
12// template<class charT, class traits>
13//   constexpr bool operator!=(basic_string_view<charT,traits> lhs, const charT* rhs);
14// template<class charT, class traits>
15//   constexpr bool operator!=(const charT* lhs, basic_string_view<charT,traits> rhs);
16
17#include <experimental/string_view>
18#include <cassert>
19
20#include "constexpr_char_traits.hpp"
21
22template <class S>
23void
24test(S lhs, const typename S::value_type* rhs, bool x)
25{
26    assert((lhs != rhs) == x);
27    assert((rhs != lhs) == x);
28}
29
30int main()
31{
32    {
33    typedef std::experimental::string_view S;
34    test(S(""), "", false);
35    test(S(""), "abcde", true);
36    test(S(""), "abcdefghij", true);
37    test(S(""), "abcdefghijklmnopqrst", true);
38    test(S("abcde"), "", true);
39    test(S("abcde"), "abcde", false);
40    test(S("abcde"), "abcdefghij", true);
41    test(S("abcde"), "abcdefghijklmnopqrst", true);
42    test(S("abcdefghij"), "", true);
43    test(S("abcdefghij"), "abcde", true);
44    test(S("abcdefghij"), "abcdefghij", false);
45    test(S("abcdefghij"), "abcdefghijklmnopqrst", true);
46    test(S("abcdefghijklmnopqrst"), "", true);
47    test(S("abcdefghijklmnopqrst"), "abcde", true);
48    test(S("abcdefghijklmnopqrst"), "abcdefghij", true);
49    test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", false);
50    }
51
52#if _LIBCPP_STD_VER > 11
53    {
54    typedef std::experimental::basic_string_view<char, constexpr_char_traits<char>> SV;
55    constexpr SV  sv1;
56    constexpr SV  sv2 { "abcde", 5 };
57
58    static_assert (!(sv1     != ""), "" );
59    static_assert (!(""      != sv1), "" );
60    static_assert (  sv1     != "abcde", "" );
61    static_assert (  "abcde" != sv1, "" );
62
63    static_assert (!(sv2      != "abcde"), "" );
64    static_assert (!("abcde"  != sv2), "" );
65    static_assert (  sv2      != "abcde0",   "" );
66    static_assert (  "abcde0" != sv2, "" );
67    }
68#endif
69}
70