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test/tools/javac/util/list/ListBufferTest.java@71f35e4b93a5
test/tools/javac/util/list/ListBufferTest.java
Wed, 23 Jan 2013 13:27:24 -0800
- author
- jjg
- date
- Wed, 23 Jan 2013 13:27:24 -0800
- changeset 1521
- 71f35e4b93a5
- parent 0
- 959103a6100f
- permissions
- -rw-r--r--
8006775: JSR 308: Compiler changes in JDK8
Reviewed-by: jjg
Contributed-by: mernst@cs.washington.edu, wmdietl@cs.washington.edu, mpapi@csail.mit.edu, mahmood@notnoop.com
1 /*
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
24 /*
25 * @test
26 * @bug 8004504
27 * @summary Ensure that ListBuffer is working properly
28 */
30 import com.sun.tools.javac.util.List;
31 import com.sun.tools.javac.util.ListBuffer;
32 import java.util.Iterator;
33 import java.util.Objects;
35 public class ListBufferTest {
36 public static void main(String... args) {
37 testRemove();
38 testCopiedEndsWithList_nil();
39 }
41 private static void testCopiedEndsWithList_nil() {
42 ListBuffer<String> lb = new ListBuffer<>();
44 lb.add("a");
45 lb.add("b");
46 lb.add("c");
48 List<String> l1 = lb.toList();
50 assertListEquals(l1, "a", "b", "c");
51 assertEndsWithNil(l1);
53 lb.add("d");
55 List<String> l2 = lb.toList();
56 assertListEquals(l2, "a", "b", "c", "d");
57 assertEndsWithNil(l2);
58 assertListEquals(l1, "a", "b", "c");
59 }
61 private static void testRemove() {
62 ListBuffer<String> lb1 = new ListBuffer<>();
64 lb1.add("a");
65 lb1.add("b");
66 lb1.add("c");
68 assertListEquals(lb1.toList(), "a", "b", "c");
69 assertEquals(lb1.next(), "a");
70 assertListEquals(lb1.toList(), "b", "c");
71 assertEquals(lb1.next(), "b");
72 assertListEquals(lb1.toList(), "c");
73 assertEquals(lb1.next(), "c");
74 assertListEquals(lb1.toList());
75 assertEquals(lb1.next(), null);
77 lb1.add("d");
79 assertEquals(lb1.next(), "d");
80 }
82 private static void assertEndsWithNil(List<?> list) {
83 while (!list.isEmpty()) {
84 list = list.tail;
85 }
87 if (list != List.nil()) throw new IllegalStateException("Not ending with List.nil()");
88 }
90 private static <T> void assertListEquals(Iterable<T> list, T... data) {
91 int i = 0;
92 Iterator<T> it = list.iterator();
94 while (it.hasNext() && i < data.length) {
95 assertEquals(it.next(), data[i++]);
96 }
98 if (it.hasNext()) {
99 throw new IllegalStateException("Too many elements in the list");
100 }
102 if (i < data.length) {
103 throw new IllegalStateException("Too few elements in the list");
104 }
105 }
107 private static void assertEquals(Object expected, Object actual) {
108 if (!Objects.equals(expected, actual)) {
109 throw new IllegalStateException("Incorrect content. Expected: " + expected + ", actual: " + actual);
110 }
111 }
112 }
