|
1
32 package net.sf.retrotranslator.runtime.java.lang;
33
34 import junit.framework.*;
35 import java.util.concurrent.*;
36
37
40 public class InheritableThreadLocal_TestCase extends TestCase {
41
42 private ExecutorService service;
43
44 private static class TestInheritableThreadLocal extends InheritableThreadLocal  <String > {
45 protected String initialValue() {
46 return "a";
47 }
48
49 protected String childValue(String parentValue) {
50 return "(" + parentValue + ")";
51 }
52 }
53
54 protected void setUp() throws Exception {
55 super.setUp();
56 service = Executors.newSingleThreadExecutor();
57 }
58
59 protected void tearDown() throws Exception {
60 service.shutdown();
61 super.tearDown();
62 }
63
64 private void execute(Runnable runnable) throws Exception {
65 try {
66 service.submit(runnable).get();
67 } catch (ExecutionException e) {
68 Throwable cause = e.getCause();
69 if (cause instanceof Exception ) throw (Exception ) cause;
70 if (cause instanceof Error ) throw (Error ) cause;
71 throw e;
72 }
73 }
74
75 public void test_Inheritance() throws Exception {
76 final InheritableThreadLocal <String > threadLocal = new TestInheritableThreadLocal();
77 assertEquals("a", threadLocal.get());
78 threadLocal.set("b");
79 execute(new Runnable () {
80 public void run() {
81 assertEquals("(b)", threadLocal.get());
82 threadLocal.set("x");
83 }
84 });
85 assertEquals("b", threadLocal.get());
86 threadLocal.set(null);
87 assertNull(threadLocal.get());
88 threadLocal.remove();
89 execute(new Runnable () {
90 public void run() {
91 assertEquals("x", threadLocal.get());
92 }
93 });
94 assertEquals("a", threadLocal.get());
95 }
96
97 public void test_NoInheritance() throws Exception {
98 final InheritableThreadLocal <String > threadLocal = new TestInheritableThreadLocal();
99 execute(new Runnable () {
100 public void run() {
101 assertEquals("a", threadLocal.get());
102 threadLocal.set("x");
103 }
104 });
105 assertEquals("a", threadLocal.get());
106 threadLocal.set("b");
107 execute(new Runnable () {
108 public void run() {
109 assertEquals("x", threadLocal.get());
110 }
111 });
112 assertEquals("b", threadLocal.get());
113 }
114
115 public void test_Removed() throws Exception {
116 final InheritableThreadLocal <String > threadLocal = new TestInheritableThreadLocal();
117 assertEquals("a", threadLocal.get());
118 threadLocal.remove();
119 execute(new Runnable () {
120 public void run() {
121 assertEquals("a", threadLocal.get());
122 threadLocal.set("x");
123 }
124 });
125 assertEquals("a", threadLocal.get());
126 threadLocal.set("b");
127 execute(new Runnable () {
128 public void run() {
129 assertEquals("x", threadLocal.get());
130 }
131 });
132 assertEquals("b", threadLocal.get());
133 }
134
135 } |
Popular Tags |
Java API By Example, From Geeks To Geeks.