/**
* 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,
* 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.utils;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import java.io.IOException;
import java.nio.charset.CharacterCodingException;
import java.util.concurrent.atomic.AtomicReference;
import org.apache.cassandra.db.IClock;
import org.apache.cassandra.db.TimestampClock;
import org.junit.Test;
public class FBUtilitiesTest
{
@Test
public void testHexBytesConversion()
{
for (int i = Byte.MIN_VALUE; i <= Byte.MAX_VALUE; i++)
{
byte[] b = new byte[]{ (byte)i };
String s = FBUtilities.bytesToHex(b);
byte[] c = FBUtilities.hexToBytes(s);
assertArrayEquals(b, c);
}
}
@Test
public void testIntBytesConversions()
{
// positive, negative, 1 and 2 byte cases, including a few edges that would foul things up unless you're careful
// about masking away sign extension.
int[] ints = new int[]
{
-20, -127, -128, 0, 1, 127, 128, 65534, 65535, -65534, -65535
};
for (int i : ints) {
byte[] ba = FBUtilities.toByteArray(i);
int actual = FBUtilities.byteArrayToInt(ba);
assertEquals(i, actual);
}
}
@Test
public void testAtomicSetMaxIClock()
{
AtomicReference<IClock> atomicClock = new AtomicReference<IClock>(null);
// atomic < new
atomicClock.set(TimestampClock.MIN_VALUE);
FBUtilities.atomicSetMax(atomicClock, new TimestampClock(1L));
assert ((TimestampClock)atomicClock.get()).timestamp() == 1L;
// atomic == new
atomicClock.set(new TimestampClock(3L));
FBUtilities.atomicSetMax(atomicClock, new TimestampClock(3L));
assert ((TimestampClock)atomicClock.get()).timestamp() == 3L;
// atomic > new
atomicClock.set(new TimestampClock(9L));
FBUtilities.atomicSetMax(atomicClock, new TimestampClock(3L));
assert ((TimestampClock)atomicClock.get()).timestamp() == 9L;
}
@Test(expected=CharacterCodingException.class)
public void testDecode() throws IOException
{
byte[] bytes = new byte[]{(byte)0xff, (byte)0xfe};
FBUtilities.decodeToUTF8(bytes);
}
}