J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2006-2007 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | import java.beans.ExceptionListener; |
| 25 | import java.beans.XMLDecoder; |
| 26 | import java.beans.XMLEncoder; |
| 27 | |
| 28 | import java.io.ByteArrayInputStream; |
| 29 | import java.io.ByteArrayOutputStream; |
| 30 | |
| 31 | import java.nio.charset.Charset; |
| 32 | |
| 33 | abstract class AbstractTest<T> implements ExceptionListener { |
| 34 | private final BeanValidator validator = new BeanValidator(); |
| 35 | |
| 36 | public final void exceptionThrown(Exception exception) { |
| 37 | throw new Error("unexpected exception", exception); |
| 38 | } |
| 39 | |
| 40 | /** |
| 41 | * Returns an object to test. |
| 42 | * This object will be encoded and decoded |
| 43 | * and the object creation will be tested. |
| 44 | * |
| 45 | * @return an object to test |
| 46 | */ |
| 47 | protected abstract T getObject(); |
| 48 | |
| 49 | /** |
| 50 | * Returns a different object to test. |
| 51 | * If this object is not {@code null} |
| 52 | * it will be encoded and decoded |
| 53 | * and the object updating will be tested. |
| 54 | * |
| 55 | * @return a different object to test |
| 56 | */ |
| 57 | protected T getAnotherObject() { |
| 58 | return null; |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * This method should be overriden |
| 63 | * if specified encoder should be initialized. |
| 64 | * |
| 65 | * @param encoder the XML encoder to initialize |
| 66 | */ |
| 67 | protected void initialize(XMLEncoder encoder) { |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * This method should be overriden |
| 72 | * if specified decoder should be initialized. |
| 73 | * |
| 74 | * @param decoder the XML decoder to initialize |
| 75 | */ |
| 76 | protected void initialize(XMLDecoder decoder) { |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * This method should be overriden |
| 81 | * for test-specific comparison. |
| 82 | * |
| 83 | * @param before the object before encoding |
| 84 | * @param after the object after decoding |
| 85 | */ |
| 86 | protected void validate(T before, T after) { |
| 87 | this.validator.validate(before, after); |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * This is entry point to start testing. |
| 92 | * |
| 93 | * @param security use {@code true} to start |
| 94 | * second pass in secure context |
| 95 | */ |
| 96 | final void test(boolean security) { |
| 97 | Bean.DEFAULT = null; |
| 98 | T object = getObject(); |
| 99 | |
| 100 | System.out.println("Test object"); |
| 101 | validate(object, testObject(object)); |
| 102 | |
| 103 | System.out.println("Test object creating"); |
| 104 | validate(object, testBean(object)); |
| 105 | |
| 106 | Bean.DEFAULT = object; |
| 107 | object = getAnotherObject(); |
| 108 | if (object != null) { |
| 109 | System.out.println("Test another object"); |
| 110 | validate(object, testObject(object)); |
| 111 | |
| 112 | System.out.println("Test object updating"); |
| 113 | validate(object, testBean(object)); |
| 114 | } |
| 115 | if (security) { |
| 116 | System.setSecurityManager(new SecurityManager()); |
| 117 | test(false); |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | private T testBean(T object) { |
| 122 | Bean bean = new Bean(); |
| 123 | bean.setValue(object); |
| 124 | bean = testObject(bean); |
| 125 | return (T) bean.getValue(); |
| 126 | } |
| 127 | |
| 128 | private <Z> Z testObject(Z object) { |
| 129 | byte[] array = writeObject(object); |
| 130 | System.out.print(new String(array, Charset.forName("UTF-8"))); |
| 131 | return (Z) readObject(array); |
| 132 | } |
| 133 | |
| 134 | private byte[] writeObject(Object object) { |
| 135 | ByteArrayOutputStream output = new ByteArrayOutputStream(); |
| 136 | XMLEncoder encoder = new XMLEncoder(output); |
| 137 | initialize(encoder); |
| 138 | encoder.writeObject(object); |
| 139 | encoder.close(); |
| 140 | return output.toByteArray(); |
| 141 | } |
| 142 | |
| 143 | private Object readObject(byte[] array) { |
| 144 | ByteArrayInputStream input = new ByteArrayInputStream(array); |
| 145 | XMLDecoder decoder = new XMLDecoder(input); |
| 146 | initialize(decoder); |
| 147 | Object object = decoder.readObject(); |
| 148 | decoder.close(); |
| 149 | return object; |
| 150 | } |
| 151 | } |