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1
19
20 package org.openide.util.lookup;
21
22 import org.openide.util.*;
23
24 import java.util.*;
25 import junit.framework.*;
26 import org.netbeans.junit.*;
27
28
30 public class AbstractLookupMemoryTest extends NbTestCase {
31 public AbstractLookupMemoryTest(java.lang.String  testName) {
32 super(testName);
33 }
34
35 public static void main(java.lang.String [] args) {
36 junit.textui.TestRunner.run(new NbTestSuite(AbstractLookupMemoryTest.class));
37 }
38
39 public void testEmptySize () {
40 AbstractLookup instanceLookup = new AbstractLookup ();
41 assertSize ("Empty lookup should be small", 16, instanceLookup);
42
43 InstanceContent ic = new InstanceContent ();
44 instanceLookup = new AbstractLookup (ic);
45 assertSize ("Lookup with InstanceContent should be small as well", 16, instanceLookup);
46 }
47
48 public void testPairSize () {
49 AbstractLookup.Pair pair = new EmptyPair ();
50 assertSize ("Pair occupies only 16 bytes", 16, pair);
51 }
52
53 public void testPairWithOnePointerSize () {
54 AbstractLookup.Pair pair = new OneItemPair ();
55 assertSize ("Pair occupies only 16 bytes", 16, pair);
56 }
57
58 public void testLookupWithPairs () {
59 Lookup.Template t = new Lookup.Template (Object .class);
60 class L implements org.openide.util.LookupListener {
61 public int cnt;
62 public void resultChanged (org.openide.util.LookupEvent ev) {
63 cnt++;
64 }
65 }
66 L listener = new L ();
67 L listener2 = new L ();
68
69 Object [] ignore = {
70 new EmptyPair (),
71 new EmptyPair (),
72 new EmptyPair (),
73 new EmptyPair (),
74 t,
75 Utilities.activeReferenceQueue(),
76 listener,
77 listener2,
78 new Integer (11) };
80
81 AbstractLookup.Content c = new AbstractLookup.Content ();
82 AbstractLookup l = new AbstractLookup (c, (Integer )ignore[ignore.length - 1]);
83
84 c.addPair ((EmptyPair)ignore[0]);
85 assertSize ("Should be really small (not counting the pair sizes)", Collections.singleton (l), 56, ignore);
86
87 c.addPair ((EmptyPair)ignore[1]);
88 assertSize ("Is bigger I guess (not counting the pair sizes)", Collections.singleton (l), 56, ignore);
89
90 c.setPairs((Collection)Arrays.asList (ignore).subList (0, 3));
91 assertSize ("Even bigger (not counting the pair sizes)", Collections.singleton (l), 64, ignore);
92
93 c.setPairs((Collection)Arrays.asList (ignore).subList (0, 4));
94 assertSize ("Now not that much(not counting the pair sizes)", Collections.singleton (l), 64, ignore);
95
96 Lookup.Result res = l.lookup (t);
97
98 assertSize ("After creating a result", Collections.singleton (l), 120, ignore);
99
100 res.addLookupListener (listener);
101
102 assertSize ("And attaching one listener", Collections.singleton (l), 120, ignore);
103
104 res.addLookupListener (listener2);
105 assertSize ("Second listener makes the situation much worse", Collections.singleton (l), 200, ignore);
106 res.removeLookupListener(listener2);
107 assertSize ("But removing it returns us back to original size", Collections.singleton (l), 120, ignore);
108
109
110 assertEquals ("Current for pairs are in", res.allItems ().size (), 4); assertSize ("and making the listener to work", Collections.singleton (l), 120, ignore);
112
113 c.removePair ((EmptyPair)ignore[0]);
114 assertEquals ("A changes has been delivered", 1, listener.cnt);
115 }
116
117
118 private static class EmptyPair extends AbstractLookup.Pair {
119 protected boolean creatorOf(Object obj) { return false; }
120 public String getDisplayName() { return ""; }
121 public String getId() { return ""; }
122 public Object getInstance() { return null; }
123 public Class getType() { return Object .class; }
124 protected boolean instanceOf(Class c) { return c == getType (); }
125 }
127
128 private static class OneItemPair extends EmptyPair {
129 private Object pointer;
130 }
131 }
132 |
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