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1
4 package com.tc.management.stats;
5
6 import java.util.Collections  ;
7 import java.util.Iterator ;
8
9 import junit.framework.TestCase;
10
11 public class TopNTest extends TestCase {
12
13 public void testTopN() throws Exception {
14 TopN topN = new TopN(3);
15 for (int pos = -10; pos < 10; ++pos) {
16 topN.evaluate(new Integer (pos));
17 }
18 Iterator pos = topN.iterator();
19 assertEquals(new Integer (9), pos.next());
20 assertEquals(new Integer (8), pos.next());
21 assertEquals(new Integer (7), pos.next());
22 assertFalse(pos.hasNext());
23 }
24
25 public void testTopNWithComparator() throws Exception {
26 TopN topN = new TopN(Collections.reverseOrder(), 3);
27 for (int pos = -10; pos < 10; ++pos) {
28 topN.evaluate(new Integer (pos));
29 }
30 Iterator pos = topN.iterator();
31 assertEquals(new Integer (-10), pos.next());
32 assertEquals(new Integer (-9), pos.next());
33 assertEquals(new Integer (-8), pos.next());
34 assertFalse(pos.hasNext());
35 }
36
37 }
38 |
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