/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j 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, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.internal.id;

import static org.assertj.core.api.Assertions.assertThat;

import org.junit.jupiter.api.RepeatedTest;
import org.junit.jupiter.api.extension.ExtendWith;
import org.neo4j.test.RandomSupport;
import org.neo4j.test.extension.Inject;
import org.neo4j.test.extension.RandomExtension;

@ExtendWith(RandomExtension.class)
class IdUtilsTest {
    @Inject
    private RandomSupport random;

    @RepeatedTest(100)
    void shouldCombineIdAndNumberOfIds() {
        // given
        long id = random.nextLong(IdUtils.MAX_ID + 1);
        int numberOfIds = random.intBetween(1, IdUtils.MAX_NUMBER_OF_IDS);
        boolean used = random.nextBoolean();

        // when
        long combinedId = IdUtils.combinedIdAndNumberOfIds(id, numberOfIds, used);

        // then
        assertThat(IdUtils.idFromCombinedId(combinedId)).isEqualTo(id);
        assertThat(IdUtils.numberOfIdsFromCombinedId(combinedId)).isEqualTo(numberOfIds);
        assertThat(IdUtils.usedFromCombinedId(combinedId)).isEqualTo(used);
    }
}
