package org.apache.cassandra.utils;
/*
*
* 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
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import org.apache.cassandra.db.marshal.TimeUUIDType;
import org.junit.Test;
import java.math.BigInteger;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.nio.ByteBuffer;
import java.util.UUID;
public class UUIDTests
{
@Test
public void verifyType1() throws UnknownHostException
{
UUID uuid = UUIDGen.makeType1UUIDFromHost(InetAddress.getByName("127.0.0.1"));
assert uuid.version() == 1;
}
@Test
public void verifyOrdering1() throws UnknownHostException
{
UUID one = UUIDGen.makeType1UUIDFromHost(InetAddress.getByName("127.0.0.1"));
UUID two = UUIDGen.makeType1UUIDFromHost(InetAddress.getByName("127.0.0.2"));
assert one.timestamp() < two.timestamp();
}
@Test
public void testDecomposeAndRaw() throws UnknownHostException
{
UUID a = UUIDGen.makeType1UUIDFromHost(InetAddress.getByName("127.0.0.1"));
byte[] decomposed = UUIDGen.decompose(a);
UUID b = UUIDGen.getUUID(ByteBuffer.wrap(decomposed));
assert a.equals(b);
}
@Test
public void testTimeUUIDType() throws UnknownHostException
{
TimeUUIDType comp = TimeUUIDType.instance;
ByteBuffer first = ByteBuffer.wrap(UUIDGen.decompose(UUIDGen.makeType1UUIDFromHost(InetAddress.getByName("127.0.0.1"))));
ByteBuffer second = ByteBuffer.wrap(UUIDGen.decompose(UUIDGen.makeType1UUIDFromHost(InetAddress.getByName("127.0.0.1"))));
assert comp.compare(first, second) < 0;
assert comp.compare(second, first) > 0;
ByteBuffer sameAsFirst = ByteBuffer.wrap(UUIDGen.decompose(UUIDGen.getUUID(first)));
assert comp.compare(first, sameAsFirst) == 0;
}
@Test
public void testUUIDTimestamp() throws UnknownHostException
{
InetAddress addr = InetAddress.getByName("127.0.0.1");
long now = System.currentTimeMillis();
UUID uuid = UUIDGen.makeType1UUIDFromHost(addr);
long tstamp = UUIDGen.getAdjustedTimestamp(uuid);
// I'll be damn is the uuid timestamp is more than 10ms after now
assert now <= tstamp && now >= tstamp - 10 : "now = " + now + ", timestamp = " + tstamp;
}
private void assertNonZero(BigInteger i)
{
assert i.toString(2).indexOf("1") > -1;
}
}