| /** |
| * 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.hadoop.hbase.filter; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import java.nio.ByteBuffer; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.testclassification.FilterTests; |
| import org.apache.hadoop.hbase.testclassification.SmallTests; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| /** |
| * Tests for the bit comparator |
| */ |
| @Category({FilterTests.class, SmallTests.class}) |
| public class TestBitComparator { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestBitComparator.class); |
| |
| private static byte[] zeros = new byte[]{0, 0, 0, 0, 0, 0}; |
| private static ByteBuffer zeros_bb = ByteBuffer.wrap(zeros); |
| private static byte[] ones = new byte[]{1, 1, 1, 1, 1, 1}; |
| private static ByteBuffer ones_bb = ByteBuffer.wrap(ones); |
| private static byte[] data0 = new byte[]{0, 1, 2, 4, 8, 15}; |
| private static byte[] data1 = new byte[]{15, 0, 0, 0, 0, 0}; |
| private static ByteBuffer data1_bb = ByteBuffer.wrap(data1); |
| private static byte[] data2 = new byte[]{0, 0, 0, 0, 0, 15}; |
| private static ByteBuffer data2_bb = ByteBuffer.wrap(data2); |
| private static byte[] data3 = new byte[]{15, 15, 15, 15, 15}; |
| |
| // data for testing compareTo method with offset and length parameters |
| private static byte[] data1_2 = new byte[]{15, 15, 0, 0, 0, 0, 0, 15}; |
| private static ByteBuffer data1_2_bb = ByteBuffer.wrap(data1_2); |
| private static byte[] data2_2 = new byte[]{15, 0, 0, 0, 0, 0, 15, 15}; |
| private static ByteBuffer data2_2_bb = ByteBuffer.wrap(data2_2); |
| |
| private final int Equal = 0; |
| private final int NotEqual = 1; |
| |
| @Test |
| public void testANDOperation() { |
| testOperation(zeros, ones, BitComparator.BitwiseOp.AND, NotEqual); |
| testOperation(data1, ones, BitComparator.BitwiseOp.AND, Equal); |
| testOperation(data1, data0, BitComparator.BitwiseOp.AND, NotEqual); |
| testOperation(data2, data1, BitComparator.BitwiseOp.AND, NotEqual); |
| testOperation(ones, data0, BitComparator.BitwiseOp.AND, Equal); |
| testOperation(ones, data3, BitComparator.BitwiseOp.AND, NotEqual); |
| |
| testOperation(zeros_bb, ones, BitComparator.BitwiseOp.AND, NotEqual); |
| testOperation(data1_bb, ones, BitComparator.BitwiseOp.AND, Equal); |
| testOperation(data1_bb, data0, BitComparator.BitwiseOp.AND, NotEqual); |
| testOperation(data2_bb, data1, BitComparator.BitwiseOp.AND, NotEqual); |
| testOperation(ones_bb, data0, BitComparator.BitwiseOp.AND, Equal); |
| testOperation(ones_bb, data3, BitComparator.BitwiseOp.AND, NotEqual); |
| } |
| |
| @Test |
| public void testOROperation() { |
| testOperation(ones, zeros, BitComparator.BitwiseOp.OR, Equal); |
| testOperation(zeros, zeros, BitComparator.BitwiseOp.OR, NotEqual); |
| testOperation(data1, zeros, BitComparator.BitwiseOp.OR, Equal); |
| testOperation(data2, data1, BitComparator.BitwiseOp.OR, Equal); |
| testOperation(ones, data3, BitComparator.BitwiseOp.OR, NotEqual); |
| |
| testOperation(ones_bb, zeros, BitComparator.BitwiseOp.OR, Equal); |
| testOperation(zeros_bb, zeros, BitComparator.BitwiseOp.OR, NotEqual); |
| testOperation(data1_bb, zeros, BitComparator.BitwiseOp.OR, Equal); |
| testOperation(data2_bb, data1, BitComparator.BitwiseOp.OR, Equal); |
| testOperation(ones_bb, data3, BitComparator.BitwiseOp.OR, NotEqual); |
| } |
| |
| @Test |
| public void testXOROperation() { |
| testOperation(ones, zeros, BitComparator.BitwiseOp.XOR, Equal); |
| testOperation(zeros, zeros, BitComparator.BitwiseOp.XOR, NotEqual); |
| testOperation(ones, ones, BitComparator.BitwiseOp.XOR, NotEqual); |
| testOperation(data2, data1, BitComparator.BitwiseOp.XOR, Equal); |
| testOperation(ones, data3, BitComparator.BitwiseOp.XOR, NotEqual); |
| |
| testOperation(ones_bb, zeros, BitComparator.BitwiseOp.XOR, Equal); |
| testOperation(zeros_bb, zeros, BitComparator.BitwiseOp.XOR, NotEqual); |
| testOperation(ones_bb, ones, BitComparator.BitwiseOp.XOR, NotEqual); |
| testOperation(data2_bb, data1, BitComparator.BitwiseOp.XOR, Equal); |
| testOperation(ones_bb, data3, BitComparator.BitwiseOp.XOR, NotEqual); |
| } |
| |
| private void testOperation(byte[] data, byte[] comparatorBytes, BitComparator.BitwiseOp operator, |
| int expected) { |
| BitComparator comparator = new BitComparator(comparatorBytes, operator); |
| assertEquals(expected, comparator.compareTo(data)); |
| } |
| |
| private void testOperation(ByteBuffer data, byte[] comparatorBytes, |
| BitComparator.BitwiseOp operator, int expected) { |
| BitComparator comparator = new BitComparator(comparatorBytes, operator); |
| assertEquals(expected, comparator.compareTo(data, 0, data.capacity())); |
| } |
| |
| @Test |
| public void testANDOperationWithOffset() { |
| testOperationWithOffset(data1_2, ones, BitComparator.BitwiseOp.AND, Equal); |
| testOperationWithOffset(data1_2, data0, BitComparator.BitwiseOp.AND, NotEqual); |
| testOperationWithOffset(data2_2, data1, BitComparator.BitwiseOp.AND, NotEqual); |
| |
| testOperationWithOffset(data1_2_bb, ones, BitComparator.BitwiseOp.AND, Equal); |
| testOperationWithOffset(data1_2_bb, data0, BitComparator.BitwiseOp.AND, NotEqual); |
| testOperationWithOffset(data2_2_bb, data1, BitComparator.BitwiseOp.AND, NotEqual); |
| } |
| |
| @Test |
| public void testOROperationWithOffset() { |
| testOperationWithOffset(data1_2, zeros, BitComparator.BitwiseOp.OR, Equal); |
| testOperationWithOffset(data2_2, data1, BitComparator.BitwiseOp.OR, Equal); |
| |
| testOperationWithOffset(data1_2_bb, zeros, BitComparator.BitwiseOp.OR, Equal); |
| testOperationWithOffset(data2_2_bb, data1, BitComparator.BitwiseOp.OR, Equal); |
| } |
| |
| @Test |
| public void testXOROperationWithOffset() { |
| testOperationWithOffset(data2_2, data1, BitComparator.BitwiseOp.XOR, Equal); |
| |
| testOperationWithOffset(data2_2_bb, data1, BitComparator.BitwiseOp.XOR, Equal); |
| } |
| |
| private void testOperationWithOffset(byte[] data, byte[] comparatorBytes, |
| BitComparator.BitwiseOp operator, int expected) { |
| BitComparator comparator = new BitComparator(comparatorBytes, operator); |
| assertEquals(expected, comparator.compareTo(data, 1, comparatorBytes.length)); |
| } |
| |
| private void testOperationWithOffset(ByteBuffer data, byte[] comparatorBytes, |
| BitComparator.BitwiseOp operator, int expected) { |
| BitComparator comparator = new BitComparator(comparatorBytes, operator); |
| assertEquals(expected, comparator.compareTo(data, 1, comparatorBytes.length)); |
| } |
| } |
| |