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1
21 package com.db4o.db4ounit.common.foundation;
22
23 import com.db4o.foundation.*;
24
25 import db4ounit.*;
26
27 public class Collection4TestCase implements TestCase {
28
29 public static void main(String  [] args) {
30 new TestRunner(Collection4TestCase.class).run();
31 }
32
33 public void testNulls(){
34 final Collection4 c = new Collection4();
35 c.add("one");
36 assertNotContainsNull(c);
37 c.add(null);
38 assertContainsNull(c);
39 assertCollection(new String [] { "one", null }, c);
40 c.prepend(null);
41 assertCollection(new String [] { null, "one", null }, c);
42 c.prepend("zero");
43 c.add("two");
44 assertCollection(new String [] {"zero", null, "one", null , "two"}, c);
45 assertContainsNull(c);
46 c.remove(null);
47 assertCollection(new String [] { "zero", "one", null , "two"}, c);
48 c.remove(null);
49 assertNotContainsNull(c);
50 assertCollection(new String [] { "zero", "one", "two"}, c);
51 c.remove(null);
52 assertCollection(new String [] { "zero", "one", "two"}, c);
53 }
54
55 public void testPrepend() {
56 final Collection4 c = new Collection4();
57 c.prepend("foo");
58 assertCollection(new String [] { "foo" }, c);
59 c.add("bar");
60 assertCollection(new String [] { "foo", "bar" }, c);
61 c.prepend("baz");
62 assertCollection(new String [] { "baz", "foo", "bar" }, c);
63 c.prepend("gazonk");
64 assertCollection(new String [] { "gazonk", "baz", "foo", "bar" }, c);
65 }
66
67 public void testCopyConstructor() {
68 final String [] expected = new String [] { "1", "2", "3" };
69 final Collection4 c = newCollection(expected);
70 assertCollection(expected, new Collection4(c));
71 }
72
73 public void testInvalidIteratorException() {
74 final Collection4 c = newCollection(new String [] { "1", "2" });
75 final Iterator4 i = c.iterator();
76 Assert.isTrue(i.moveNext());
77 c.add("3");
78 Assert.expect(InvalidIteratorException.class, new CodeBlock() {
79 public void run() throws Exception {
80 System.out.println(i.current());
81 }
82 });
83 }
84
85 public void testRemove() {
86 final Collection4 c = newCollection(new String [] { "1", "2", "3", "4" });
87 c.remove("3");
88 assertCollection(new String [] { "1", "2", "4"} , c);
89 c.remove("4");
90 assertCollection(new String [] { "1", "2" } , c);
91 c.add("5");
92 assertCollection(new String [] { "1", "2", "5" } , c);
93 c.remove("1");
94 assertCollection(new String [] { "2", "5" } , c);
95 c.remove("2");
96 c.remove("5");
97 assertCollection(new String [] {}, c);
98 c.add("6");
99 assertCollection(new String [] { "6" }, c);
100 }
101
102 private void assertCollection(String [] expected, Collection4 c) {
103 Assert.areEqual(expected.length, c.size());
104 assertIterator(expected, c.iterator());
105 }
106
107 private void assertContainsNull(Collection4 c) {
108 Assert.isTrue(c.contains(null));
109 Assert.isNull(c.get(null));
110 int size = c.size();
111 c.ensure(null);
112 Assert.areEqual(size, c.size());
113 }
114
115 private void assertNotContainsNull(Collection4 c) {
116 Assert.isFalse(c.contains(null));
117 Assert.isNull(c.get(null));
118 int size = c.size();
119 c.ensure(null);
120 Assert.areEqual(size + 1, c.size());
121 c.remove(null);
122 Assert.areEqual(size, c.size());
123 }
124
125 public void testIterator() {
126 String [] expected = new String [] { "1", "2", "3" };
127 Collection4 c = newCollection(expected);
128 assertIterator(expected, c.iterator());
129 }
130
131 private Collection4 newCollection(String [] expected) {
132 Collection4 c = new Collection4();
133 c.addAll(expected);
134 return c;
135 }
136
137 private void assertIterator(String [] expected, Iterator4 iterator) {
138 Assert.isNotNull(iterator);
139
140 for (int i=0; i<expected.length; ++i) {
141 Assert.isTrue(iterator.moveNext());
142 Assert.areEqual(expected[i], iterator.current());
143 }
144 Assert.isFalse(iterator.moveNext());
145 }
146
147 public void testToString() {
148 Collection4 c = new Collection4();
149 Assert.areEqual("[]", c.toString());
150
151 c.add("foo");
152 Assert.areEqual("[foo]", c.toString());
153 c.add("bar");
154 Assert.areEqual("[foo, bar]", c.toString());
155 }
156 }
157 |
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