text: //===----------------------------------------------------------------------===//
  //
  // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  // See https://llvm.org/LICENSE.txt for license information.
  // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  //
  //===----------------------------------------------------------------------===//
  //
  // Copyright 2020, Intel Corporation
  //
  // Modified to test pmem::obj containers
  //
  
  // <string>
  
  // template<class charT, class traits, class Allocator>
  //   bool operator<(const basic_string<charT,traits,Allocator>& lhs,
  //                   basic_string_view<charT,traits> rhs);
  //   bool operator<(basic_string_view<charT,traits> lhs,
  //            const basic_string<charT,traits,Allocator>&  rhs);
  
  #include "unittest.hpp"
  
  #include <libpmemobj++/string_view.hpp>
  
  template <class S>
  void
  test(const S &lhs, const typename S::value_type *rhs, bool x, bool y)
  {
  	UT_ASSERT((lhs < rhs) == x);
  	UT_ASSERT((rhs < lhs) == y);
  }
  
  static void
  run()
  {
  	{
  		typedef pmem::obj::basic_string_view<char> S;
  		test(S(""), "", false, false);
  		test(S(""), "abcde", true, false);
  		test(S(""), "abcdefghij", true, false);
  		test(S(""), "abcdefghijklmnopqrst", true, false);
  		test(S("abcde"), "", false, true);
  		test(S("abcde"), "abcde", false, false);
  		test(S("abcde"), "abcdefghij", true, false);
  		test(S("abcde"), "abcdefghijklmnopqrst", true, false);
  		test(S("abcdefghij"), "", false, true);
  		test(S("abcdefghij"), "abcde", false, true);
  		test(S("abcdefghij"), "abcdefghij", false, false);
  		test(S("abcdefghij"), "abcdefghijklmnopqrst", true, false);
  		test(S("abcdefghijklmnopqrst"), "", false, true);
  		test(S("abcdefghijklmnopqrst"), "abcde", false, true);
  		test(S("abcdefghijklmnopqrst"), "abcdefghij", false, true);
  		test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", false,
  		     false);
  	}
  }
  
  static void
  run_wchar_t()
  {
  	{
  		typedef pmem::obj::basic_string_view<wchar_t> S;
  		test(S(L""), L"", false, false);
  		test(S(L""), L"abcde", true, false);
  		test(S(L""), L"abcdefghij", true, false);
  		test(S(L""), L"abcdefghijklmnopqrst", true, false);
  		test(S(L"abcde"), L"", false, true);
  		test(S(L"abcde"), L"abcde", false, false);
  		test(S(L"abcde"), L"abcdefghij", true, false);
  		test(S(L"abcde"), L"abcdefghijklmnopqrst", true, false);
  		test(S(L"abcdefghij"), L"", false, true);
  		test(S(L"abcdefghij"), L"abcde", false, true);
  		test(S(L"abcdefghij"), L"abcdefghij", false, false);
  		test(S(L"abcdefghij"), L"abcdefghijklmnopqrst", true, false);
  		test(S(L"abcdefghijklmnopqrst"), L"", false, true);
  		test(S(L"abcdefghijklmnopqrst"), L"abcde", false, true);
  		test(S(L"abcdefghijklmnopqrst"), L"abcdefghij", false, true);
  		test(S(L"abcdefghijklmnopqrst"), L"abcdefghijklmnopqrst", false,
  		     false);
  	}
  }
  
  int
  main(int argc, char *argv[])
  {
  	return run_test([&] {
  		run();
  		run_wchar_t();
  	});
  }
  