/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.fluss.utils.log;

import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.io.TempDir;

import java.io.File;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;

/** Test for {@link org.apache.fluss.utils.log.ByteBufferUnmapper}. */
public class ByteBufferUnmapperTest {

    private @TempDir File tempDir;

    @Test
    public void testUnmap() throws Exception {
        File file = new File(tempDir, "fluss.tmp");
        file.createNewFile();
        try (FileChannel channel = FileChannel.open(file.toPath())) {
            MappedByteBuffer map = channel.map(FileChannel.MapMode.READ_ONLY, 0, 0);
            ByteBufferUnmapper.unmap(file.getAbsolutePath(), map);
        }
    }
}
