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1 package com.thoughtworks.acceptance;
2
3 public abstract class AbstractCircularReferenceTest extends AbstractAcceptanceTest {
4
5 protected void setUp() throws Exception  {
6 super.setUp();
7 xstream.alias("person", Person.class);
8 }
9
10 public void testCircularReference() {
11 Person bob = new Person("bob");
12 Person jane = new Person("jane");
13 bob.likes = jane;
14 jane.likes = bob;
15
16 String xml = xstream.toXML(bob);
17
18 Person bobOut = (Person) xstream.fromXML(xml);
19 assertEquals("bob", bobOut.firstname);
20 Person janeOut = bobOut.likes;
21
22 assertEquals("jane", janeOut.firstname);
23
24 assertSame(bobOut.likes, janeOut);
25 assertSame(bobOut, janeOut.likes);
26 }
27
28 public void testCircularReferenceToSelf() {
29 Person bob = new Person("bob");
30 bob.likes = bob;
31
32 String xml = xstream.toXML(bob);
33
34 Person bobOut = (Person) xstream.fromXML(xml);
35 assertEquals("bob", bobOut.firstname);
36 assertSame(bobOut, bobOut.likes);
37 }
38
39 public void testDeepCircularReferences() {
40 Person bob = new Person("bob");
41 Person jane = new Person("jane");
42 Person ann = new Person("ann");
43 Person poo = new Person("poo");
44
45 bob.likes = jane;
46 bob.loathes = ann;
47 ann.likes = jane;
48 ann.loathes = poo;
49 poo.likes = jane;
50 poo.loathes = ann;
51
52 String xml = xstream.toXML(bob);
53 Person bobOut = (Person) xstream.fromXML(xml);
54 Person janeOut = bobOut.likes;
55 Person annOut = bobOut.loathes;
56 Person pooOut = annOut.loathes;
57
58 assertEquals("bob", bobOut.firstname);
59 assertEquals("jane", janeOut.firstname);
60 assertEquals("ann", annOut.firstname);
61 assertEquals("poo", pooOut.firstname);
62
63 assertSame(janeOut, bobOut.likes);
64 assertSame(annOut, bobOut.loathes);
65 assertSame(janeOut, annOut.likes);
66 assertSame(pooOut, annOut.loathes);
67 assertSame(janeOut, pooOut.likes);
68 assertSame(annOut, pooOut.loathes);
69 }
70
71 public static class Person {
72 public String firstname;
73 public Person likes;
74 public Person loathes;
75
76 public Person() {
77 }
78
79 public Person(String name) {
80 this.firstname = name;
81 }
82 }
83
84 }
85 |
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