/* * 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.commons.lang; import junit.framework.Test; import junit.framework.TestCase; import junit.framework.TestSuite; import junit.textui.TestRunner; /** * Class to test BitField functionality * * @author Scott Sanders * @author Marc Johnson * @author Glen Stampoultzis * @version $Id: BitFieldTest.java 437554 2006-08-28 06:21:41Z bayard $ */ public class BitFieldTest extends TestCase { public static void main(String[] args) { TestRunner.run(suite()); } public static Test suite() { TestSuite suite = new TestSuite(BitFieldTest.class); suite.setName("BitField Tests"); return suite; } private static BitField bf_multi = new BitField(0x3F80); private static BitField bf_single = new BitField(0x4000); private static BitField bf_zero = new BitField(0); /** * Constructor BitFieldTest * * @param name */ public BitFieldTest(String name) { super(name); } /** * test the getValue() method */ public void testGetValue() { assertEquals(bf_multi.getValue(-1), 127); assertEquals(bf_multi.getValue(0), 0); assertEquals(bf_single.getValue(-1), 1); assertEquals(bf_single.getValue(0), 0); assertEquals(bf_zero.getValue(-1), 0); assertEquals(bf_zero.getValue(0), 0); } /** * test the getShortValue() method */ public void testGetShortValue() { assertEquals(bf_multi.getShortValue((short) - 1), (short) 127); assertEquals(bf_multi.getShortValue((short) 0), (short) 0); assertEquals(bf_single.getShortValue((short) - 1), (short) 1); assertEquals(bf_single.getShortValue((short) 0), (short) 0); assertEquals(bf_zero.getShortValue((short) -1), (short) 0); assertEquals(bf_zero.getShortValue((short) 0), (short) 0); } /** * test the getRawValue() method */ public void testGetRawValue() { assertEquals(bf_multi.getRawValue(-1), 0x3F80); assertEquals(bf_multi.getRawValue(0), 0); assertEquals(bf_single.getRawValue(-1), 0x4000); assertEquals(bf_single.getRawValue(0), 0); assertEquals(bf_zero.getRawValue(-1), 0); assertEquals(bf_zero.getRawValue(0), 0); } /** * test the getShortRawValue() method */ public void testGetShortRawValue() { assertEquals(bf_multi.getShortRawValue((short) - 1), (short) 0x3F80); assertEquals(bf_multi.getShortRawValue((short) 0), (short) 0); assertEquals(bf_single.getShortRawValue((short) - 1), (short) 0x4000); assertEquals(bf_single.getShortRawValue((short) 0), (short) 0); assertEquals(bf_zero.getShortRawValue((short) -1), (short) 0); assertEquals(bf_zero.getShortRawValue((short) 0), (short) 0); } /** * test the isSet() method */ public void testIsSet() { assertTrue(!bf_multi.isSet(0)); assertTrue(!bf_zero.isSet(0)); for (int j = 0x80; j <= 0x3F80; j += 0x80) { assertTrue(bf_multi.isSet(j)); } for (int j = 0x80; j <= 0x3F80; j += 0x80) { assertTrue(!bf_zero.isSet(j)); } assertTrue(!bf_single.isSet(0)); assertTrue(bf_single.isSet(0x4000)); } /** * test the isAllSet() method */ public void testIsAllSet() { for (int j = 0; j < 0x3F80; j += 0x80) { assertTrue(!bf_multi.isAllSet(j)); assertTrue(bf_zero.isAllSet(j)); } assertTrue(bf_multi.isAllSet(0x3F80)); assertTrue(!bf_single.isAllSet(0)); assertTrue(bf_single.isAllSet(0x4000)); } /** * test the setValue() method */ public void testSetValue() { for (int j = 0; j < 128; j++) { assertEquals(bf_multi.getValue(bf_multi.setValue(0, j)), j); assertEquals(bf_multi.setValue(0, j), j << 7); } for (int j = 0; j < 128; j++) { assertEquals(bf_zero.getValue(bf_zero.setValue(0, j)), 0); assertEquals(bf_zero.setValue(0, j), 0); } // verify that excess bits are stripped off assertEquals(bf_multi.setValue(0x3f80, 128), 0); for (int j = 0; j < 2; j++) { assertEquals(bf_single.getValue(bf_single.setValue(0, j)), j); assertEquals(bf_single.setValue(0, j), j << 14); } // verify that excess bits are stripped off assertEquals(bf_single.setValue(0x4000, 2), 0); } /** * test the setShortValue() method */ public void testSetShortValue() { for (int j = 0; j < 128; j++) { assertEquals(bf_multi.getShortValue(bf_multi.setShortValue((short) 0, (short) j)), (short) j); assertEquals(bf_multi.setShortValue((short) 0, (short) j), (short) (j << 7)); } for (int j = 0; j < 128; j++) { assertEquals(bf_zero.getShortValue(bf_zero.setShortValue((short) 0, (short) j)), (short) 0); assertEquals(bf_zero.setShortValue((short) 0, (short) j), (short) (0)); } // verify that excess bits are stripped off assertEquals(bf_multi.setShortValue((short) 0x3f80, (short) 128), (short) 0); for (int j = 0; j < 2; j++) { assertEquals(bf_single.getShortValue(bf_single.setShortValue((short) 0, (short) j)), (short) j); assertEquals(bf_single.setShortValue((short) 0, (short) j), (short) (j << 14)); } // verify that excess bits are stripped off assertEquals(bf_single.setShortValue((short) 0x4000, (short) 2), (short) 0); } public void testByte() { assertEquals(0, new BitField(0).setByteBoolean((byte) 0, true)); assertEquals(1, new BitField(1).setByteBoolean((byte) 0, true)); assertEquals(2, new BitField(2).setByteBoolean((byte) 0, true)); assertEquals(4, new BitField(4).setByteBoolean((byte) 0, true)); assertEquals(8, new BitField(8).setByteBoolean((byte) 0, true)); assertEquals(16, new BitField(16).setByteBoolean((byte) 0, true)); assertEquals(32, new BitField(32).setByteBoolean((byte) 0, true)); assertEquals(64, new BitField(64).setByteBoolean((byte) 0, true)); assertEquals(-128, new BitField(128).setByteBoolean((byte) 0, true)); assertEquals(1, new BitField(0).setByteBoolean((byte) 1, false)); assertEquals(0, new BitField(1).setByteBoolean((byte) 1, false)); assertEquals(0, new BitField(2).setByteBoolean((byte) 2, false)); assertEquals(0, new BitField(4).setByteBoolean((byte) 4, false)); assertEquals(0, new BitField(8).setByteBoolean((byte) 8, false)); assertEquals(0, new BitField(16).setByteBoolean((byte) 16, false)); assertEquals(0, new BitField(32).setByteBoolean((byte) 32, false)); assertEquals(0, new BitField(64).setByteBoolean((byte) 64, false)); assertEquals(0, new BitField(128).setByteBoolean((byte) 128, false)); assertEquals(-2, new BitField(1).setByteBoolean((byte) 255, false)); byte clearedBit = new BitField(0x40).setByteBoolean((byte) - 63, false); assertEquals(false, new BitField(0x40).isSet(clearedBit)); } /** * test the clear() method */ public void testClear() { assertEquals(bf_multi.clear(-1), 0xFFFFC07F); assertEquals(bf_single.clear(-1), 0xFFFFBFFF); assertEquals(bf_zero.clear(-1), 0xFFFFFFFF); } /** * test the clearShort() method */ public void testClearShort() { assertEquals(bf_multi.clearShort((short) - 1), (short) 0xC07F); assertEquals(bf_single.clearShort((short) - 1), (short) 0xBFFF); assertEquals(bf_zero.clearShort((short) -1), (short) 0xFFFF); } /** * test the set() method */ public void testSet() { assertEquals(bf_multi.set(0), 0x3F80); assertEquals(bf_single.set(0), 0x4000); assertEquals(bf_zero.set(0), 0); } /** * test the setShort() method */ public void testSetShort() { assertEquals(bf_multi.setShort((short) 0), (short) 0x3F80); assertEquals(bf_single.setShort((short) 0), (short) 0x4000); assertEquals(bf_zero.setShort((short) 0), (short) 0); } /** * test the setBoolean() method */ public void testSetBoolean() { assertEquals(bf_multi.set(0), bf_multi.setBoolean(0, true)); assertEquals(bf_single.set(0), bf_single.setBoolean(0, true)); assertEquals(bf_zero.set(0), bf_zero.setBoolean(0, true)); assertEquals(bf_multi.clear(-1), bf_multi.setBoolean(-1, false)); assertEquals(bf_single.clear(-1), bf_single.setBoolean(-1, false)); assertEquals(bf_zero.clear(-1), bf_zero.setBoolean(-1, false)); } /** * test the setShortBoolean() method */ public void testSetShortBoolean() { assertEquals(bf_multi.setShort((short) 0), bf_multi.setShortBoolean((short) 0, true)); assertEquals(bf_single.setShort((short) 0), bf_single.setShortBoolean((short) 0, true)); assertEquals(bf_zero.setShort((short) 0), bf_zero.setShortBoolean((short) 0, true)); assertEquals(bf_multi.clearShort((short) - 1), bf_multi.setShortBoolean((short) - 1, false)); assertEquals(bf_single.clearShort((short) - 1), bf_single.setShortBoolean((short) - 1, false)); assertEquals(bf_zero.clearShort((short) -1), bf_zero.setShortBoolean((short) -1, false)); } }