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16 package net.sf.cglib.reflect;
17
18 import java.lang.reflect.Method  ;
19 import junit.framework.*;
20
21
24 public class TestDelegates extends net.sf.cglib.CodeGenTestCase {
25
26 public interface StringMaker {
27 Object newInstance(char[] buf, int offset, int count);
28 }
29
30 public void testConstructor() throws Throwable {
31 StringMaker maker = (StringMaker)ConstructorDelegate.create(String .class, StringMaker.class);
32 assertTrue("nil".equals(maker.newInstance("vanilla".toCharArray(), 2, 3)));
33 }
34
35 public interface Substring {
36 String substring(int start, int end);
37 }
38
39 public interface Substring2 {
40 Object anyNameAllowed(int start, int end);
41 }
42
43 public interface IndexOf {
44 int indexOf(String str, int fromIndex);
45 }
46
47 public void testFancy() throws Throwable {
48 Substring delegate = (Substring)MethodDelegate.create("CGLIB", "substring", Substring.class);
49 assertTrue("LI".equals(delegate.substring(2, 4)));
50 }
51
52 public void testFancyNames() throws Throwable {
53 Substring2 delegate = (Substring2)MethodDelegate.create("CGLIB", "substring", Substring2.class);
54 assertTrue("LI".equals(delegate.anyNameAllowed(2, 4)));
55 }
56
57 public void testFancyTypes() throws Throwable {
58 String test = "abcabcabc";
59 IndexOf delegate = (IndexOf)MethodDelegate.create(test, "indexOf", IndexOf.class);
60 assertTrue(delegate.indexOf("ab", 1) == test.indexOf("ab", 1));
61 }
62
63 public void testEquals() throws Throwable {
64 String test = "abc";
65 MethodDelegate mc1 = MethodDelegate.create(test, "indexOf", IndexOf.class);
66 MethodDelegate mc2 = MethodDelegate.create(test, "indexOf", IndexOf.class);
67 MethodDelegate mc3 = MethodDelegate.create("other", "indexOf", IndexOf.class);
68 MethodDelegate mc4 = MethodDelegate.create(test, "substring", Substring.class);
69 MethodDelegate mc5 = MethodDelegate.create(test, "substring", Substring2.class);
70 assertTrue(mc1.equals(mc2));
71 assertTrue(!mc1.equals(mc3));
72 assertTrue(!mc1.equals(mc4));
73 assertTrue(mc4.equals(mc5));
74 }
75
76 public static interface MainDelegate {
77 int main(String [] args);
78 }
79
80 public static class MainTest {
81 public static int alternateMain(String [] args) {
82 return 7;
83 }
84 }
85
86 public void testStaticDelegate() throws Throwable {
87 MainDelegate start = (MainDelegate)MethodDelegate.createStatic(MainTest.class,
88 "alternateMain",
89 MainDelegate.class);
90 assertTrue(start.main(null) == 7);
91 }
92
93 public static interface Listener {
94 public void onEvent();
95 }
96
97 public static class Publisher {
98 public int test = 0;
99 private MulticastDelegate event = MulticastDelegate.create(Listener.class);
100 public void addListener(Listener listener) {
101 event = event.add(listener);
102 }
103 public void removeListener(Listener listener) {
104 event = event.remove(listener);
105 }
106 public void fireEvent() {
107 ((Listener)event).onEvent();
108 }
109 }
110
111 public void testPublisher() throws Throwable {
112 final Publisher p = new Publisher();
113 Listener l1 = new Listener() {
114 public void onEvent() {
115 p.test++;
116 }
117 };
118 p.addListener(l1);
119 p.addListener(l1);
120 p.fireEvent();
121 assertTrue(p.test == 2);
122 p.removeListener(l1);
123 p.fireEvent();
124 assertTrue(p.test == 3);
125 }
126
127 public static interface SuperSimple {
128 public int execute();
129 }
130
131 public void testMulticastReturnValue() throws Throwable {
132 SuperSimple ss1 = new SuperSimple() {
133 public int execute() {
134 return 1;
135 }
136 };
137 SuperSimple ss2 = new SuperSimple() {
138 public int execute() {
139 return 2;
140 }
141 };
142 MulticastDelegate multi = MulticastDelegate.create(SuperSimple.class);
143 multi = multi.add(ss1);
144 multi = multi.add(ss2);
145 assertTrue(((SuperSimple)multi).execute() == 2);
146 multi = multi.remove(ss1);
147 multi = multi.add(ss1);
148 assertTrue(((SuperSimple)multi).execute() == 1);
149 }
150
151 public TestDelegates(String testName) {
152 super(testName);
153 }
154
155 public static void main(String [] args) {
156 junit.textui.TestRunner.run(suite());
157 }
158
159 public static Test suite() {
160 return new TestSuite(TestDelegates.class);
161 }
162
163 public void perform(ClassLoader loader) throws Throwable {
164 }
165
166 public void testFailOnMemoryLeak() throws Throwable {
167 }
168
169 }
170 |
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