cassandra-analytics-core/src/test/java/org/apache/cassandra/spark/data/LocalDataLayerTests.java

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 * distributed with this work for additional information
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 * 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
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package org.apache.cassandra.spark.data;

import java.io.IOException;
import java.math.BigInteger;
import java.nio.ByteBuffer;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Collections;
import java.util.stream.Stream;

import org.junit.Test;

import org.apache.cassandra.bridge.CassandraVersion;
import org.apache.cassandra.spark.data.partitioner.Partitioner;
import org.apache.cassandra.spark.reader.SchemaTests;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertTrue;

public class LocalDataLayerTests extends VersionRunner
{
    public LocalDataLayerTests(CassandraVersion version)
    {
        super(version);
    }

    @Test
    public void testLocalDataLayer() throws IOException
    {
        CassandraVersion version = bridge.getVersion();
        Path directory1 = Files.createTempDirectory("d1");
        Path directory2 = Files.createTempDirectory("d2");
        Path directory3 = Files.createTempDirectory("d3");
        Path directory4 = Files.createTempDirectory("d4");
        LocalDataLayer dataLayer = new LocalDataLayer(version, "backup_test", SchemaTests.SCHEMA,
                Stream.of(directory1, directory2, directory3, directory4)
                      .map(directory -> directory.toAbsolutePath().toString())
                      .toArray(String[]::new));
        assertEquals(version, dataLayer.version());
        assertEquals(1, dataLayer.partitionCount());
        assertNotNull(dataLayer.cqlTable());
        assertTrue(dataLayer.isInPartition(0, BigInteger.ZERO, ByteBuffer.wrap(new byte[0])));
        assertEquals(Partitioner.Murmur3Partitioner, dataLayer.partitioner());
        SSTablesSupplier ssTables = dataLayer.sstables(0, null, Collections.emptyList());
        assertNotNull(ssTables);
        assertTrue(ssTables.openAll((ssTable, isRepairPrimary) -> null).isEmpty());
    }

    @Test
    public void testEquality()
    {
        CassandraVersion version = bridge.getVersion();
        LocalDataLayer dataLayer1 = new LocalDataLayer(version, "backup_test", SchemaTests.SCHEMA,
                "/var/lib/cassandra/data1/data/backup_test/sbr_test/snapshot/snapshotName/",
                "/var/lib/cassandra/data2/data/backup_test/sbr_test/snapshot/snapshotName/",
                "/var/lib/cassandra/data3/data/backup_test/sbr_test/snapshot/snapshotName/",
                "/var/lib/cassandra/data4/data/backup_test/sbr_test/snapshot/snapshotName/");
        LocalDataLayer dataLayer2 = new LocalDataLayer(version, "backup_test", SchemaTests.SCHEMA,
                "/var/lib/cassandra/data1/data/backup_test/sbr_test/snapshot/snapshotName/",
                "/var/lib/cassandra/data2/data/backup_test/sbr_test/snapshot/snapshotName/",
                "/var/lib/cassandra/data3/data/backup_test/sbr_test/snapshot/snapshotName/",
                "/var/lib/cassandra/data4/data/backup_test/sbr_test/snapshot/snapshotName/");
        assertNotSame(dataLayer1, dataLayer2);
        assertEquals(dataLayer1, dataLayer1);
        assertEquals(dataLayer2, dataLayer2);
        assertNotEquals(null, dataLayer2);
        assertNotEquals(new ArrayList<>(), dataLayer1);
        assertEquals(dataLayer1, dataLayer2);
        assertEquals(dataLayer1.hashCode(), dataLayer2.hashCode());
    }
}