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1 package com.thoughtworks.acceptance;
2
3 import com.thoughtworks.xstream.testutil.CallLog;
4
5 import java.io.ByteArrayInputStream  ;
6 import java.io.ByteArrayOutputStream ;
7 import java.io.IOException ;
8 import java.io.ObjectInputStream ;
9 import java.io.ObjectInputValidation ;
10 import java.io.ObjectOutputStream ;
11 import java.io.Serializable ;
12
13 public class SerializationCallbackOrderTest extends AbstractAcceptanceTest {
14
15 private static CallLog log = new CallLog();
17
18
20 public static class Base implements Serializable {
21
22 private void writeObject(ObjectOutputStream out) throws IOException {
23 log.actual("Base.writeObject() start");
24 out.defaultWriteObject();
25 log.actual("Base.writeObject() end");
26 }
27
28 private void readObject(ObjectInputStream in) throws IOException , ClassNotFoundException {
29 log.actual("Base.readObject() start");
30 in.defaultReadObject();
31 log.actual("Base.readObject() end");
32 }
33
34 private Object writeReplace() {
35 log.actual("Base.writeReplace()");
36 return this;
37 }
38
39 private Object readResolve() {
40 log.actual("Base.readResolve()");
41 return this;
42 }
43 }
44
45 public static class Child extends Base implements Serializable {
46
47 private void writeObject(ObjectOutputStream out) throws IOException {
48 log.actual("Child.writeObject() start");
49 out.defaultWriteObject();
50 log.actual("Child.writeObject() end");
51 }
52
53 private void readObject(ObjectInputStream in) throws IOException , ClassNotFoundException {
54 log.actual("Child.readObject() start");
55 in.defaultReadObject();
56 log.actual("Child.readObject() end");
57 }
58
59 private Object writeReplace() {
60 log.actual("Child.writeReplace()");
61 return this;
62 }
63
64 private Object readResolve() {
65 log.actual("Child.readResolve()");
66 return this;
67 }
68 }
69
70
72 private byte[] javaSerialize(Object object) throws IOException {
73 ByteArrayOutputStream bytes = new ByteArrayOutputStream ();
74 ObjectOutputStream objectOutputStream = new ObjectOutputStream (bytes);
75 objectOutputStream.writeObject(object);
76 objectOutputStream.close();
77 return bytes.toByteArray();
78 }
79
80 private Object javaDeserialize(byte[] data) throws IOException , ClassNotFoundException {
81 ObjectInputStream objectInputStream = new ObjectInputStream (new ByteArrayInputStream (data));
82 return objectInputStream.readObject();
83 }
84
85
87 public void testJavaSerialization() throws IOException {
88 log.expect("Child.writeReplace()");
90 log.expect("Base.writeObject() start");
91 log.expect("Base.writeObject() end");
92 log.expect("Child.writeObject() start");
93 log.expect("Child.writeObject() end");
94
95 javaSerialize(new Child());
97
98 log.verify();
100 }
101
102 public void testXStreamSerialization() throws IOException {
103 log.expect("Child.writeReplace()");
105 log.expect("Base.writeObject() start");
106 log.expect("Base.writeObject() end");
107 log.expect("Child.writeObject() start");
108 log.expect("Child.writeObject() end");
109
110 xstream.toXML(new Child());
112
113 log.verify();
115 }
116
117 public void testJavaDeserialization() throws IOException , ClassNotFoundException {
118 byte[] data = javaSerialize(new Child());
120 log.reset();
121
122 log.expect("Base.readObject() start");
124 log.expect("Base.readObject() end");
125 log.expect("Child.readObject() start");
126 log.expect("Child.readObject() end");
127 log.expect("Child.readResolve()");
128
129 javaDeserialize(data);
131
132 log.verify();
134 }
135
136 public void testXStreamDeserialization() throws IOException , ClassNotFoundException {
137 String data = xstream.toXML(new Child());
139 log.reset();
140
141 log.expect("Base.readObject() start");
143 log.expect("Base.readObject() end");
144 log.expect("Child.readObject() start");
145 log.expect("Child.readObject() end");
146 log.expect("Child.readResolve()");
147
148 xstream.fromXML(data);
150
151 log.verify();
153 }
154
155
156 public static class ParentNotTransient implements Serializable {
157
158 public int somethingNotTransient;
159
160 public ParentNotTransient(int somethingNotTransient) {
161 this.somethingNotTransient = somethingNotTransient;
162 }
163
164 }
165
166 public static class ChildWithTransient extends ParentNotTransient implements Serializable {
167
168 public transient int somethingTransient;
169
170 public ChildWithTransient(int somethingNotTransient, int somethingTransient) {
171 super(somethingNotTransient);
172 this.somethingTransient = somethingTransient;
173 }
174
175 private void readObject(ObjectInputStream s) throws IOException , ClassNotFoundException {
176 s.defaultReadObject();
177 somethingTransient = 99999;
178 }
179 }
180
181 public void testCallsReadObjectEvenWithoutNonTransientFields() {
182 xstream.alias("parent", ParentNotTransient.class);
183 xstream.alias("child", ChildWithTransient.class);
184
185 Object in = new ChildWithTransient(10, 22222);
186 String expectedXml = ""
187 + "<child serialization=\"custom\">\n"
188 + " <parent>\n"
189 + " <default>\n"
190 + " <somethingNotTransient>10</somethingNotTransient>\n"
191 + " </default>\n"
192 + " </parent>\n"
193 + " <child>\n"
194 + " <default/>\n"
195 + " </child>\n"
196 + "</child>";
197
198 String xml = xstream.toXML(in);
199 assertEquals(expectedXml, xml);
200
201 ChildWithTransient childWithTransient = (ChildWithTransient) xstream.fromXML(xml);
202
203 assertEquals(10, childWithTransient.somethingNotTransient);
204 assertEquals(99999, childWithTransient.somethingTransient);
205 }
206
207
208 public static class SomethingThatValidates implements Serializable {
209
210 private void readObject(ObjectInputStream s) throws IOException {
211
212 final int LOW_PRIORITY = -5;
213 final int MEDIUM_PRIORITY = 0;
214 final int HIGH_PRIORITY = 5;
215
216 s.registerValidation(new ObjectInputValidation () {
217 public void validateObject() {
218 log.actual("validateObject() medium priority 1");
219 }
220 }, MEDIUM_PRIORITY);
221
222 s.registerValidation(new ObjectInputValidation () {
223 public void validateObject() {
224 log.actual("validateObject() high priority");
225 }
226 }, HIGH_PRIORITY);
227
228 s.registerValidation(new ObjectInputValidation () {
229 public void validateObject() {
230 log.actual("validateObject() low priority");
231 }
232 }, LOW_PRIORITY);
233
234 s.registerValidation(new ObjectInputValidation () {
235 public void validateObject() {
236 log.actual("validateObject() medium priority 2");
237 }
238 }, MEDIUM_PRIORITY);
239 }
240 }
241
242 public void testJavaSerializationValidatesObjectIsCalledInPriorityOrder() throws IOException , ClassNotFoundException {
243 log.expect("validateObject() high priority");
245 log.expect("validateObject() medium priority 2");
246 log.expect("validateObject() medium priority 1");
247 log.expect("validateObject() low priority");
248
249 javaDeserialize(javaSerialize(new SomethingThatValidates()));
251
252 log.verify();
254 }
255
256 public void testXStreamSerializationValidatesObjectIsCalledInPriorityOrder() throws IOException , ClassNotFoundException {
257 log.expect("validateObject() high priority");
259 log.expect("validateObject() medium priority 2");
260 log.expect("validateObject() medium priority 1");
261 log.expect("validateObject() low priority");
262
263 xstream.fromXML(xstream.toXML(new SomethingThatValidates()));
265
266 log.verify();
268 }
269
270 }
271 |
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