Java tutorial
/* * 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 com.alibaba.citrus.util.internal.apache.lang; import junit.framework.TestCase; /** * Unit tests {@link org.apache.commons.lang.builder.HashCodeBuilder}. * * @author <a href="mailto:scolebourne@joda.org">Stephen Colebourne</a> * @version $Id$ */ public class HashCodeBuilderTests extends TestCase { // ----------------------------------------------------------------------- public void testConstructorEx1() { try { new HashCodeBuilder(0, 0); } catch (IllegalArgumentException ex) { return; } fail(); } public void testConstructorEx2() { try { new HashCodeBuilder(2, 2); } catch (IllegalArgumentException ex) { return; } fail(); } static class TestObject { private int a; public TestObject(int a) { this.a = a; } @Override public boolean equals(Object o) { if (o == this) { return true; } if (!(o instanceof TestObject)) { return false; } TestObject rhs = (TestObject) o; return a == rhs.a; } public void setA(int a) { this.a = a; } public int getA() { return a; } } public void testSuper() { Object obj = new Object(); assertEquals(17 * 37 + 19 * 41 + obj.hashCode(), new HashCodeBuilder(17, 37) .appendSuper(new HashCodeBuilder(19, 41).append(obj).toHashCode()).toHashCode()); } public void testObject() { Object obj = null; assertEquals(17 * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj = new Object(); assertEquals(17 * 37 + obj.hashCode(), new HashCodeBuilder(17, 37).append(obj).toHashCode()); } public void testLong() { assertEquals(17 * 37, new HashCodeBuilder(17, 37).append(0L).toHashCode()); assertEquals(17 * 37 + (int) (123456789L ^ 123456789L >> 32), new HashCodeBuilder(17, 37).append(123456789L).toHashCode()); } public void testInt() { assertEquals(17 * 37, new HashCodeBuilder(17, 37).append(0).toHashCode()); assertEquals(17 * 37 + 123456, new HashCodeBuilder(17, 37).append(123456).toHashCode()); } public void testShort() { assertEquals(17 * 37, new HashCodeBuilder(17, 37).append((short) 0).toHashCode()); assertEquals(17 * 37 + 12345, new HashCodeBuilder(17, 37).append((short) 12345).toHashCode()); } public void testChar() { assertEquals(17 * 37, new HashCodeBuilder(17, 37).append((char) 0).toHashCode()); assertEquals(17 * 37 + 1234, new HashCodeBuilder(17, 37).append((char) 1234).toHashCode()); } public void testByte() { assertEquals(17 * 37, new HashCodeBuilder(17, 37).append((byte) 0).toHashCode()); assertEquals(17 * 37 + 123, new HashCodeBuilder(17, 37).append((byte) 123).toHashCode()); } public void testDouble() { assertEquals(17 * 37, new HashCodeBuilder(17, 37).append(0d).toHashCode()); double d = 1234567.89; long l = Double.doubleToLongBits(d); assertEquals(17 * 37 + (int) (l ^ l >> 32), new HashCodeBuilder(17, 37).append(d).toHashCode()); } public void testFloat() { assertEquals(17 * 37, new HashCodeBuilder(17, 37).append(0f).toHashCode()); float f = 1234.89f; int i = Float.floatToIntBits(f); assertEquals(17 * 37 + i, new HashCodeBuilder(17, 37).append(f).toHashCode()); } public void testBoolean() { assertEquals(17 * 37 + 0, new HashCodeBuilder(17, 37).append(true).toHashCode()); assertEquals(17 * 37 + 1, new HashCodeBuilder(17, 37).append(false).toHashCode()); } public void testObjectArray() { assertEquals(17 * 37, new HashCodeBuilder(17, 37).append((Object[]) null).toHashCode()); Object[] obj = new Object[2]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[0] = new Object(); assertEquals((17 * 37 + obj[0].hashCode()) * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[1] = new Object(); assertEquals((17 * 37 + obj[0].hashCode()) * 37 + obj[1].hashCode(), new HashCodeBuilder(17, 37).append(obj).toHashCode()); } public void testObjectArrayAsObject() { Object[] obj = new Object[2]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[0] = new Object(); assertEquals((17 * 37 + obj[0].hashCode()) * 37, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[1] = new Object(); assertEquals((17 * 37 + obj[0].hashCode()) * 37 + obj[1].hashCode(), new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); } public void testLongArray() { assertEquals(17 * 37, new HashCodeBuilder(17, 37).append((long[]) null).toHashCode()); long[] obj = new long[2]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[0] = 5L; int h1 = (int) (5L ^ 5L >> 32); assertEquals((17 * 37 + h1) * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[1] = 6L; int h2 = (int) (6L ^ 6L >> 32); assertEquals((17 * 37 + h1) * 37 + h2, new HashCodeBuilder(17, 37).append(obj).toHashCode()); } public void testLongArrayAsObject() { long[] obj = new long[2]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[0] = 5L; int h1 = (int) (5L ^ 5L >> 32); assertEquals((17 * 37 + h1) * 37, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[1] = 6L; int h2 = (int) (6L ^ 6L >> 32); assertEquals((17 * 37 + h1) * 37 + h2, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); } public void testIntArray() { assertEquals(17 * 37, new HashCodeBuilder(17, 37).append((int[]) null).toHashCode()); int[] obj = new int[2]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[0] = 5; assertEquals((17 * 37 + 5) * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[1] = 6; assertEquals((17 * 37 + 5) * 37 + 6, new HashCodeBuilder(17, 37).append(obj).toHashCode()); } public void testIntArrayAsObject() { int[] obj = new int[2]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[0] = 5; assertEquals((17 * 37 + 5) * 37, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[1] = 6; assertEquals((17 * 37 + 5) * 37 + 6, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); } public void testShortArray() { assertEquals(17 * 37, new HashCodeBuilder(17, 37).append((short[]) null).toHashCode()); short[] obj = new short[2]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[0] = (short) 5; assertEquals((17 * 37 + 5) * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[1] = (short) 6; assertEquals((17 * 37 + 5) * 37 + 6, new HashCodeBuilder(17, 37).append(obj).toHashCode()); } public void testShortArrayAsObject() { short[] obj = new short[2]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[0] = (short) 5; assertEquals((17 * 37 + 5) * 37, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[1] = (short) 6; assertEquals((17 * 37 + 5) * 37 + 6, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); } public void testCharArray() { assertEquals(17 * 37, new HashCodeBuilder(17, 37).append((char[]) null).toHashCode()); char[] obj = new char[2]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[0] = (char) 5; assertEquals((17 * 37 + 5) * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[1] = (char) 6; assertEquals((17 * 37 + 5) * 37 + 6, new HashCodeBuilder(17, 37).append(obj).toHashCode()); } public void testCharArrayAsObject() { char[] obj = new char[2]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[0] = (char) 5; assertEquals((17 * 37 + 5) * 37, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[1] = (char) 6; assertEquals((17 * 37 + 5) * 37 + 6, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); } public void testByteArray() { assertEquals(17 * 37, new HashCodeBuilder(17, 37).append((byte[]) null).toHashCode()); byte[] obj = new byte[2]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[0] = (byte) 5; assertEquals((17 * 37 + 5) * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[1] = (byte) 6; assertEquals((17 * 37 + 5) * 37 + 6, new HashCodeBuilder(17, 37).append(obj).toHashCode()); } public void testByteArrayAsObject() { byte[] obj = new byte[2]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[0] = (byte) 5; assertEquals((17 * 37 + 5) * 37, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[1] = (byte) 6; assertEquals((17 * 37 + 5) * 37 + 6, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); } public void testDoubleArray() { assertEquals(17 * 37, new HashCodeBuilder(17, 37).append((double[]) null).toHashCode()); double[] obj = new double[2]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[0] = 5.4d; long l1 = Double.doubleToLongBits(5.4d); int h1 = (int) (l1 ^ l1 >> 32); assertEquals((17 * 37 + h1) * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[1] = 6.3d; long l2 = Double.doubleToLongBits(6.3d); int h2 = (int) (l2 ^ l2 >> 32); assertEquals((17 * 37 + h1) * 37 + h2, new HashCodeBuilder(17, 37).append(obj).toHashCode()); } public void testDoubleArrayAsObject() { double[] obj = new double[2]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[0] = 5.4d; long l1 = Double.doubleToLongBits(5.4d); int h1 = (int) (l1 ^ l1 >> 32); assertEquals((17 * 37 + h1) * 37, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[1] = 6.3d; long l2 = Double.doubleToLongBits(6.3d); int h2 = (int) (l2 ^ l2 >> 32); assertEquals((17 * 37 + h1) * 37 + h2, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); } public void testFloatArray() { assertEquals(17 * 37, new HashCodeBuilder(17, 37).append((float[]) null).toHashCode()); float[] obj = new float[2]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[0] = 5.4f; int h1 = Float.floatToIntBits(5.4f); assertEquals((17 * 37 + h1) * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[1] = 6.3f; int h2 = Float.floatToIntBits(6.3f); assertEquals((17 * 37 + h1) * 37 + h2, new HashCodeBuilder(17, 37).append(obj).toHashCode()); } public void testFloatArrayAsObject() { float[] obj = new float[2]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[0] = 5.4f; int h1 = Float.floatToIntBits(5.4f); assertEquals((17 * 37 + h1) * 37, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[1] = 6.3f; int h2 = Float.floatToIntBits(6.3f); assertEquals((17 * 37 + h1) * 37 + h2, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); } public void testBooleanArray() { assertEquals(17 * 37, new HashCodeBuilder(17, 37).append((boolean[]) null).toHashCode()); boolean[] obj = new boolean[2]; assertEquals((17 * 37 + 1) * 37 + 1, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[0] = true; assertEquals((17 * 37 + 0) * 37 + 1, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[1] = false; assertEquals((17 * 37 + 0) * 37 + 1, new HashCodeBuilder(17, 37).append(obj).toHashCode()); } public void testBooleanArrayAsObject() { boolean[] obj = new boolean[2]; assertEquals((17 * 37 + 1) * 37 + 1, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[0] = true; assertEquals((17 * 37 + 0) * 37 + 1, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); obj[1] = false; assertEquals((17 * 37 + 0) * 37 + 1, new HashCodeBuilder(17, 37).append((Object) obj).toHashCode()); } public void testBooleanMultiArray() { boolean[][] obj = new boolean[2][]; assertEquals(17 * 37 * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[0] = new boolean[0]; assertEquals(17 * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[0] = new boolean[1]; assertEquals((17 * 37 + 1) * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[0] = new boolean[2]; assertEquals(((17 * 37 + 1) * 37 + 1) * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[0][0] = true; assertEquals(((17 * 37 + 0) * 37 + 1) * 37, new HashCodeBuilder(17, 37).append(obj).toHashCode()); obj[1] = new boolean[1]; assertEquals(((17 * 37 + 0) * 37 + 1) * 37 + 1, new HashCodeBuilder(17, 37).append(obj).toHashCode()); } }