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1
19 package org.netbeans.modules.java.classpath;
20
21
22 import java.net.URL  ;
23 import java.util.concurrent.CountDownLatch ;
24 import java.util.concurrent.ExecutorService ;
25 import java.util.concurrent.Executors ;
26 import java.util.concurrent.locks.ReentrantLock ;
27 import junit.framework.TestCase;
28 import junit.framework.*;
29 import org.netbeans.api.java.classpath.ClassPath;
30 import org.netbeans.junit.NbTestCase;
31 import org.netbeans.spi.java.classpath.ClassPathFactory;
32 import org.netbeans.spi.java.classpath.ClassPathImplementation;
33 import org.netbeans.spi.java.classpath.PathResourceImplementation;
34 import java.util.List ;
35 import java.util.ArrayList ;
36 import java.util.Iterator ;
37 import java.util.Collections ;
38 import java.beans.PropertyChangeListener ;
39 import java.beans.PropertyChangeEvent ;
40 import org.netbeans.spi.java.classpath.support.ClassPathSupport;
41 import org.openide.util.WeakListeners;
42
43
47 public class ProxyClassPathImplementationTest extends NbTestCase {
48
49 public ProxyClassPathImplementationTest(String testName) {
50 super(testName);
51 }
52
53 public void testResources () throws Exception {
54 final URL url1 = new URL ("file:///tmp/a/");
55 final URL url2 = new URL ("file:///tmp/b/");
56 final URL url3 = new URL ("file:///tmp/b/");
57
58 final ClassPath cp1 = ClassPathSupport.createClassPath(new URL [] {url1, url2});
59 final ClassPath cp2 = ClassPathSupport.createClassPath(new URL [] {url3});
60 final ClassPath prxCp = ClassPathSupport.createProxyClassPath(new ClassPath[] {cp1,cp2});
61 List <ClassPath.Entry> entries = prxCp.entries();
62 assertEquals(3,entries.size());
63 assertEquals(url1,entries.get(0).getURL());
64 assertEquals(url2,entries.get(1).getURL());
65 assertEquals(url3,entries.get(2).getURL());
66 }
67
68 public void testDeadLock() throws Exception {
69 List <PathResourceImplementation> resources = Collections.<PathResourceImplementation>emptyList();
70 final ReentrantLock lock = new ReentrantLock (false);
71 final CountDownLatch signal = new CountDownLatch (1);
72 final ClassPath cp = ClassPathFactory.createClassPath(ClassPathSupport.createProxyClassPathImplementation(new ClassPathImplementation[] {new LockClassPathImplementation (resources,lock, signal)}));
73 lock.lock();
74 final ExecutorService es = Executors.newSingleThreadExecutor();
75 try {
76 es.submit(new Runnable () {
77 public void run () {
78 cp.entries();
79 }
80 });
81 signal.await();
82 cp.entries();
83 } finally {
84 es.shutdownNow();
85 }
86 }
87
88
89 private class LockClassPathImplementation implements ClassPathImplementation {
90
91 private List <? extends PathResourceImplementation> resources;
92 private ReentrantLock lock;
93 private CountDownLatch signal;
94
95 public LockClassPathImplementation (final List <? extends PathResourceImplementation> resources, final ReentrantLock lock, final CountDownLatch signal) {
96 this.resources = resources;
97 this.lock = lock;
98 this.signal = signal;
99 }
100
101 public List <? extends PathResourceImplementation> getResources() {
102 this.signal.countDown();
103 this.lock.lock();
104 return this.resources;
105 }
106
107 public void addPropertyChangeListener(PropertyChangeListener listener) {
108 }
109
110 public void removePropertyChangeListener(PropertyChangeListener listener) {
111 }
112
113 }
114
115
116 }
117 |
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