OrderPreservingPartitionerTest.java

/*
 * 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,
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 * See the License for the specific language governing permissions and
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 */
package org.apache.cassandra.dht;

import java.io.IOException;

import org.junit.BeforeClass;
import org.junit.Test;

import org.apache.cassandra.SchemaLoader;

public class OrderPreservingPartitionerTest extends PartitionerTestCase
{
    @BeforeClass
    public static void cleanStatesFromPreviousTest() throws IOException
    {
        // Since OrderPreservingPartitioner#describeOwnership tries to read SSTables,
        // we need to clear data dir to clear garbage from previous test before running tests.
        SchemaLoader.cleanupAndLeaveDirs();
    }

    public void initPartitioner()
    {
        partitioner = OrderPreservingPartitioner.instance;
    }

    protected boolean shouldStopRecursion(Token left, Token right)
    {
        return false;
    }

    @Test
    public void testCompare()
    {
        assert tok("").compareTo(tok("asdf")) < 0;
        assert tok("asdf").compareTo(tok("")) > 0;
        assert tok("").compareTo(tok("")) == 0;
        assert tok("z").compareTo(tok("a")) > 0;
        assert tok("a").compareTo(tok("z")) < 0;
        assert tok("asdf").compareTo(tok("asdf")) == 0;
        assert tok("asdz").compareTo(tok("asdf")) > 0;
    }
}