01: /*
02: * <copyright>
03: *
04: * Copyright 1997-2004 BBNT Solutions, LLC
05: * under sponsorship of the Defense Advanced Research Projects
06: * Agency (DARPA).
07: *
08: * You can redistribute this software and/or modify it under the
09: * terms of the Cougaar Open Source License as published on the
10: * Cougaar Open Source Website (www.cougaar.org).
11: *
12: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
13: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
14: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
15: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
16: * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
17: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
18: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23: *
24: * </copyright>
25: */
26:
27: package org.cougaar.util;
28:
29: import java.util.*;
30:
31: import junit.framework.*;
32:
33: public class TestChainingIterator extends TestCase {
34: private List a;
35: private List b;
36: private List c;
37:
38: protected void setUp() {
39: a = new ArrayList();
40: a.add("A");
41: a.add("B");
42:
43: b = new ArrayList();
44: b.add("C");
45: b.add("D");
46:
47: c = new ArrayList();
48: }
49:
50: protected void tearDown() {
51: a = null;
52: b = null;
53: c = null;
54: }
55:
56: private void traverseAB(Iterator x) {
57: assertTrue(x.hasNext());
58: assertEquals(x.next(), "A");
59: assertTrue(x.hasNext());
60: assertEquals(x.next(), "B");
61: assertTrue(x.hasNext());
62: assertEquals(x.next(), "C");
63: assertTrue(x.hasNext());
64: assertEquals(x.next(), "D");
65: }
66:
67: public void test_ab0() {
68: Iterator x = new ChainingIterator(new Iterator[] {
69: a.iterator(), b.iterator() });
70: traverseAB(x);
71: assertFalse(x.hasNext());
72: }
73:
74: public void test_emptychains() {
75: Iterator x = new ChainingIterator(new Iterator[] { null,
76: a.iterator(), null, b.iterator(), null,
77: new ArrayList().iterator(), null });
78: traverseAB(x);
79: assertFalse(x.hasNext());
80: }
81:
82: public void test_empty0() {
83: Iterator x = new ChainingIterator(new Iterator[] {});
84: assertFalse(x.hasNext());
85: }
86:
87: public void test_NSEE() {
88: Iterator x = new ChainingIterator(new Iterator[] {});
89: try {
90: x.next();
91: } catch (NoSuchElementException e) {
92: }
93: fail();
94: }
95: }
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