ReversedTypeTest.java

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package org.apache.cassandra.db.marshal;

import org.junit.Test;

import static org.apache.cassandra.utils.ByteBufferUtil.bytes;
import static org.apache.cassandra.utils.ByteBufferUtil.EMPTY_BYTE_BUFFER;

public class ReversedTypeTest
{
    @Test
    public void testReverseComparison()
    {
        ReversedType<Long> t = ReversedType.getInstance(LongType.instance);

        assert t.compare(bytes(2L), bytes(4L)) == 1;
        assert t.compare(bytes(4L), bytes(2L)) == -1;

        // the empty byte buffer is always the smaller
        assert t.compare(EMPTY_BYTE_BUFFER, bytes(2L)) == -1;
        assert t.compare(bytes(2L), EMPTY_BYTE_BUFFER) == 1;
    }
}