/* * 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.cql3; import java.nio.ByteBuffer; import java.util.concurrent.ThreadLocalRandom; import org.junit.Test; import junit.framework.Assert; import org.apache.cassandra.db.marshal.BytesType; import org.apache.cassandra.utils.ByteBufferUtil; public class ColumnIdentifierTest { @Test public void testComparisonMethod() { ThreadLocalRandom random = ThreadLocalRandom.current(); byte[] commonBytes = new byte[10]; byte[] aBytes = new byte[16]; byte[] bBytes = new byte[16]; for (int i = 0 ; i < 100000 ; i++) { int commonLength = random.nextInt(0, 10); random.nextBytes(commonBytes); random.nextBytes(aBytes); random.nextBytes(bBytes); System.arraycopy(commonBytes, 0, aBytes, 0, commonLength); System.arraycopy(commonBytes, 0, bBytes, 0, commonLength); int aLength = random.nextInt(commonLength, 16); int bLength = random.nextInt(commonLength, 16); ColumnIdentifier a = new ColumnIdentifier(ByteBuffer.wrap(aBytes, 0, aLength), BytesType.instance); ColumnIdentifier b = new ColumnIdentifier(ByteBuffer.wrap(bBytes, 0, bLength), BytesType.instance); Assert.assertEquals("" + i, compareResult(a.compareTo(b)), compareResult(ByteBufferUtil.compareUnsigned(a.bytes, b.bytes))); } } private static int compareResult(int v) { return v < 0 ? -1 : v > 0 ? 1 : 0; } }