File: opgt.string_view.pointer.pass.cpp

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libpmemobj-cpp 1.12-1
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//===----------------------------------------------------------------------===//
//
// 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>

// constexpr template<class charT, class traits, class Allocator>
//   bool operator>(const charT* lhs, basic_string_wiew<charT,traits> rhs);
// constexpr template<class charT, class traits, class Allocator>
//   bool operator>(basic_string_wiew<charT,traits> lhs, const charT* rhs);

#include "unittest.hpp"

#include <libpmemobj++/string_view.hpp>

template <class S>
void
test(const typename S::value_type *lhs, const S &rhs, bool x, bool y)
{
	UT_ASSERT((lhs > rhs) == x);
	UT_ASSERT((rhs > lhs) == y);
}

static void
run(int argc, char *argv[])
{
	{
		typedef pmem::obj::string_view S;
		test("", S(""), false, false);
		test("", S("abcde"), false, true);
		test("", S("abcdefghij"), false, true);
		test("", S("abcdefghijklmnopqrst"), false, true);
		test("abcde", S(""), true, false);
		test("abcde", S("abcde"), false, false);
		test("abcde", S("abcdefghij"), false, true);
		test("abcde", S("abcdefghijklmnopqrst"), false, true);
		test("abcdefghij", S(""), true, false);
		test("abcdefghij", S("abcde"), true, false);
		test("abcdefghij", S("abcdefghij"), false, false);
		test("abcdefghij", S("abcdefghijklmnopqrst"), false, true);
		test("abcdefghijklmnopqrst", S(""), true, false);
		test("abcdefghijklmnopqrst", S("abcde"), true, false);
		test("abcdefghijklmnopqrst", S("abcdefghij"), true, false);
		test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), false,
		     false);
	}

#ifdef XXX // XXX: Implement constexpr_char_traits
	{
		typedef std::basic_string_view<char,
					       constexpr_char_traits<char>>
			SV;
		constexpr SV sv1;
		constexpr SV sv2{"abcde", 5};

		static_assert(!(sv1 > ""), "");
		static_assert(!("" > sv1), "");
		static_assert(!(sv1 > "abcde"), "");
		static_assert("abcde" > sv1, "");

		static_assert(sv2 > "", "");
		static_assert(!("" > sv2), "");
		static_assert(!(sv2 > "abcde"), "");
		static_assert(!("abcde" > sv2), "");
		static_assert(!(sv2 > "abcde0"), "");
		static_assert("abcde0" > sv2, "");
	}
#endif
}

int
main(int argc, char *argv[])
{
	return run_test([&] { run(argc, argv); });
}