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16 package net.sf.cglib.proxy;
17
18 import net.sf.cglib.CodeGenTestCase;
19 import java.beans.*;
20 import java.lang.reflect.Method  ;
21 import java.util.*;
22 import junit.framework.*;
23
24
28 public class TestMixin extends CodeGenTestCase {
29 public void testSimple() throws Exception {
30 Object obj = Mixin.create(new Class []{ DI1.class, DI2.class },
31 new Object []{ new D1(), new D2() });
32 assertTrue(((DI1)obj).herby().equals("D1"));
33 assertTrue(((DI2)obj).derby().equals("D2"));
34 }
35
36 public void testDetermineInterfaces() throws Exception {
37 Object obj = Mixin.create(new Object []{ new D1(), new D2() });
38 assertTrue(((DI1)obj).herby().equals("D1"));
39 assertTrue(((DI2)obj).derby().equals("D2"));
40 }
41
42 public void testOverride() throws Exception {
43 Object obj = Mixin.create(new Object []{ new D1(), new D4() });
44 assertTrue(((DI1)obj).herby().equals("D1"));
45 assertTrue(((DI2)obj).derby().equals("D4"));
46 }
47
48 public void testNonOverride() throws Exception {
49 Object obj = Mixin.create(new Object []{ new D4(), new D1() });
50 assertTrue(((DI1)obj).herby().equals("D4"));
51 assertTrue(((DI2)obj).derby().equals("D4"));
52 }
53
54 public void testSubclass() throws Exception {
55 Object obj = Mixin.create(new Object []{ new D3(), new D1() });
56 assertTrue(((DI1)obj).herby().equals("D1"));
57 assertTrue(((DI2)obj).derby().equals("D2"));
58 assertTrue(((DI3)obj).extra().equals("D3"));
59 }
60
61 public void testBeans() throws Exception {
62 Object obj = Mixin.createBean(new Object []{ new DBean1(), new DBean2() });
63 Set getters = getGetters(obj.getClass());
64 assertTrue(getters.size() == 3); assertTrue(getters.contains("name"));
66 assertTrue(getters.contains("age"));
67 assertTrue(!(obj instanceof DI1));
68 }
69
70 public void testEverything() throws Exception {
71 Mixin.Generator gen = new Mixin.Generator();
72 gen.setStyle(Mixin.STYLE_EVERYTHING);
73 gen.setDelegates(new Object []{ new DBean1(), new DBean2() });
74 Object obj = gen.create();
75 Set getters = getGetters(obj.getClass());
76 assertTrue(getters.size() == 3); assertTrue(obj instanceof DI1);
78 assertTrue(new DBean1().herby().equals(((DI1)obj).herby()));
79 }
80
81 public void testNullDelegates() throws Exception {
82 Mixin.Generator gen = new Mixin.Generator();
83 gen.setStyle(Mixin.STYLE_BEANS);
84 gen.setClasses(new Class []{ DBean1.class, DBean2.class });
85 Mixin mixin = gen.create();
86 Object obj = mixin.newInstance(new Object []{ new DBean1(), new DBean2() });
87 }
88
89 private static Set getGetters(Class beanClass) throws Exception {
90 Set getters = new HashSet();
91 PropertyDescriptor[] descriptors =
92 Introspector.getBeanInfo(beanClass).getPropertyDescriptors();
93 for (int i = 0; i < descriptors.length; i++) {
94 if (descriptors[i].getReadMethod() != null) {
95 getters.add(descriptors[i].getName());
96 }
97 }
98 return getters;
99 }
100
101 private static PropertyDescriptor getProperty(Class beanClass, String property) throws Exception {
102 Set getters = new HashSet();
103 PropertyDescriptor[] descriptors =
104 Introspector.getBeanInfo(beanClass).getPropertyDescriptors();
105 for (int i = 0; i < descriptors.length; i++) {
106 if (descriptors[i].getName().equals(property))
107 return descriptors[i];
108 }
109 return null;
110 }
111
112 public TestMixin(String testName) {
113 super(testName);
114 }
115
116 public static void main(String [] args) {
117 junit.textui.TestRunner.run(suite());
118 }
119
120 public static Test suite() {
121 return new TestSuite(TestMixin.class);
122 }
123
124 public void perform(ClassLoader loader) throws Throwable {
125 Mixin.createBean(loader, new Object []{ new DBean1(), new DBean2() });
126 }
127
128 public void testFailOnMemoryLeak() throws Throwable {
129 if(leaks()){
130 fail("Memory Leak in Mixin");
131 }
132 }
133
134 }
135 |
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