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* Licensed to the Apache Software Foundation (ASF) under one
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* 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.cassandra.db.marshal;
import java.net.UnknownHostException;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.Random;
import java.util.UUID;
import org.apache.cassandra.serializers.MarshalException;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import org.apache.cassandra.utils.UUIDGen;
public class TimeUUIDTypeTest
{
TimeUUIDType timeUUIDType = new TimeUUIDType();
@Test
public void testEquality() throws UnknownHostException
{
UUID a = UUIDGen.getTimeUUID();
UUID b = new UUID(a.getMostSignificantBits(), a.getLeastSignificantBits());
timeUUIDType.validate(ByteBuffer.wrap(UUIDGen.decompose(a)));
timeUUIDType.validate(ByteBuffer.wrap(UUIDGen.decompose(b)));
assertEquals(0, timeUUIDType.compare(ByteBuffer.wrap(UUIDGen.decompose(a)), ByteBuffer.wrap(UUIDGen.decompose(b))));
}
@Test
public void testSmaller() throws UnknownHostException
{
UUID a = UUIDGen.getTimeUUID();
UUID b = UUIDGen.getTimeUUID();
UUID c = UUIDGen.getTimeUUID();
timeUUIDType.validate(ByteBuffer.wrap(UUIDGen.decompose(a)));
timeUUIDType.validate(ByteBuffer.wrap(UUIDGen.decompose(b)));
timeUUIDType.validate(ByteBuffer.wrap(UUIDGen.decompose(c)));
assert timeUUIDType.compare(ByteBuffer.wrap(UUIDGen.decompose(a)), ByteBuffer.wrap(UUIDGen.decompose(b))) < 0;
assert timeUUIDType.compare(ByteBuffer.wrap(UUIDGen.decompose(b)), ByteBuffer.wrap(UUIDGen.decompose(c))) < 0;
assert timeUUIDType.compare(ByteBuffer.wrap(UUIDGen.decompose(a)), ByteBuffer.wrap(UUIDGen.decompose(c))) < 0;
}
@Test
public void testBigger() throws UnknownHostException
{
UUID a = UUIDGen.getTimeUUID();
UUID b = UUIDGen.getTimeUUID();
UUID c = UUIDGen.getTimeUUID();
timeUUIDType.validate(ByteBuffer.wrap(UUIDGen.decompose(a)));
timeUUIDType.validate(ByteBuffer.wrap(UUIDGen.decompose(b)));
timeUUIDType.validate(ByteBuffer.wrap(UUIDGen.decompose(c)));
assert timeUUIDType.compare(ByteBuffer.wrap(UUIDGen.decompose(c)), ByteBuffer.wrap(UUIDGen.decompose(b))) > 0;
assert timeUUIDType.compare(ByteBuffer.wrap(UUIDGen.decompose(b)), ByteBuffer.wrap(UUIDGen.decompose(a))) > 0;
assert timeUUIDType.compare(ByteBuffer.wrap(UUIDGen.decompose(c)), ByteBuffer.wrap(UUIDGen.decompose(a))) > 0;
}
@Test
public void testTimestampComparison()
{
Random rng = new Random();
ByteBuffer[] uuids = new ByteBuffer[100];
for (int i = 0; i < uuids.length; i++)
{
uuids[i] = ByteBuffer.allocate(16);
rng.nextBytes(uuids[i].array());
// set version to 1
uuids[i].array()[6] &= 0x0F;
uuids[i].array()[6] |= 0x10;
}
Arrays.sort(uuids, timeUUIDType);
for (int i = 1; i < uuids.length; i++)
{
long i0 = UUIDGen.getUUID(uuids[i - 1]).timestamp();
long i1 = UUIDGen.getUUID(uuids[i]).timestamp();
assert i0 <= i1;
}
}
@Test
public void testValidTimeVersion()
{
UUID uuid1 = UUID.fromString("00000000-0000-1000-0000-000000000000");
assert uuid1.version() == 1;
timeUUIDType.validate(ByteBuffer.wrap(UUIDGen.decompose(uuid1)));
}
@Test(expected = MarshalException.class)
public void testInvalidTimeVersion()
{
UUID uuid2 = UUID.fromString("00000000-0000-2100-0000-000000000000");
assert uuid2.version() == 2;
timeUUIDType.validate(ByteBuffer.wrap(UUIDGen.decompose(uuid2)));
}
}