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      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, class Allocator>
     13 //   bool operator<(const basic_string<charT,traits,Allocator>& lhs,
     14 //                   basic_string_view<charT,traits> rhs);
     15 //   bool operator<(basic_string_view<charT,traits> lhs,
     16 //            const basic_string<charT,traits,Allocator>&  rhs);
     17 
     18 #include <experimental/string_view>
     19 #include <cassert>
     20 
     21 template <class S>
     22 void
     23 test(const S& lhs, const typename S::value_type* rhs, bool x, bool y)
     24 {
     25     assert((lhs < rhs) == x);
     26     assert((rhs < lhs) == y);
     27 }
     28 
     29 int main()
     30 {
     31     {
     32     typedef std::experimental::string_view S;
     33     test(S(""), "", false, false);
     34     test(S(""), "abcde", true, false);
     35     test(S(""), "abcdefghij", true, false);
     36     test(S(""), "abcdefghijklmnopqrst", true, false);
     37     test(S("abcde"), "", false, true);
     38     test(S("abcde"), "abcde", false, false);
     39     test(S("abcde"), "abcdefghij", true, false);
     40     test(S("abcde"), "abcdefghijklmnopqrst", true, false);
     41     test(S("abcdefghij"), "", false, true);
     42     test(S("abcdefghij"), "abcde", false, true);
     43     test(S("abcdefghij"), "abcdefghij", false, false);
     44     test(S("abcdefghij"), "abcdefghijklmnopqrst", true, false);
     45     test(S("abcdefghijklmnopqrst"), "", false, true);
     46     test(S("abcdefghijklmnopqrst"), "abcde", false, true);
     47     test(S("abcdefghijklmnopqrst"), "abcdefghij", false, true);
     48     test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", false, false);
     49     }
     50 }
     51