/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */

/**
 * @file enum_over_optimisation.cpp Test whether we do not trigger an over optimisation of enums.
 *
 * For more details, see http://gcc.gnu.org/PR43680 and PR#5246.
 */

#include "../stdafx.h"

#include "../core/enum_type.hpp"

#include "../3rdparty/catch2/catch.hpp"

#include "../safeguards.h"

enum TestEnum : int8_t {
	ZERO,
	ONE,
	TWO
};

TEST_CASE("EnumOverOptimisation_BoundsCheck")
{
	TestEnum negative_one = static_cast<TestEnum>(-1);
	CHECK(negative_one < ZERO);

	TestEnum three = static_cast<TestEnum>(3);
	CHECK(TWO < three);
}

enum class TestEnumFlags : uint8_t {
	Zero = 0,
	One = 1 << 0,
	Two = 1 << 1,
};
DECLARE_ENUM_AS_BIT_SET(TestEnumFlags)

TEST_CASE("EnumOverOptimisation_Bitmask")
{
	TestEnumFlags three = TestEnumFlags::One | TestEnumFlags::Two;
	CHECK(HasFlag(three, TestEnumFlags::One));
	CHECK(HasFlag(three, TestEnumFlags::Two));
}
