1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javac/util/list/ListBufferTest.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,112 @@
1.4 +/*
1.5 + * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + */
1.26 +
1.27 +/*
1.28 + * @test
1.29 + * @bug 8004504
1.30 + * @summary Ensure that ListBuffer is working properly
1.31 + */
1.32 +
1.33 +import com.sun.tools.javac.util.List;
1.34 +import com.sun.tools.javac.util.ListBuffer;
1.35 +import java.util.Iterator;
1.36 +import java.util.Objects;
1.37 +
1.38 +public class ListBufferTest {
1.39 + public static void main(String... args) {
1.40 + testRemove();
1.41 + testCopiedEndsWithList_nil();
1.42 + }
1.43 +
1.44 + private static void testCopiedEndsWithList_nil() {
1.45 + ListBuffer<String> lb = new ListBuffer<>();
1.46 +
1.47 + lb.add("a");
1.48 + lb.add("b");
1.49 + lb.add("c");
1.50 +
1.51 + List<String> l1 = lb.toList();
1.52 +
1.53 + assertListEquals(l1, "a", "b", "c");
1.54 + assertEndsWithNil(l1);
1.55 +
1.56 + lb.add("d");
1.57 +
1.58 + List<String> l2 = lb.toList();
1.59 + assertListEquals(l2, "a", "b", "c", "d");
1.60 + assertEndsWithNil(l2);
1.61 + assertListEquals(l1, "a", "b", "c");
1.62 + }
1.63 +
1.64 + private static void testRemove() {
1.65 + ListBuffer<String> lb1 = new ListBuffer<>();
1.66 +
1.67 + lb1.add("a");
1.68 + lb1.add("b");
1.69 + lb1.add("c");
1.70 +
1.71 + assertListEquals(lb1.toList(), "a", "b", "c");
1.72 + assertEquals(lb1.next(), "a");
1.73 + assertListEquals(lb1.toList(), "b", "c");
1.74 + assertEquals(lb1.next(), "b");
1.75 + assertListEquals(lb1.toList(), "c");
1.76 + assertEquals(lb1.next(), "c");
1.77 + assertListEquals(lb1.toList());
1.78 + assertEquals(lb1.next(), null);
1.79 +
1.80 + lb1.add("d");
1.81 +
1.82 + assertEquals(lb1.next(), "d");
1.83 + }
1.84 +
1.85 + private static void assertEndsWithNil(List<?> list) {
1.86 + while (!list.isEmpty()) {
1.87 + list = list.tail;
1.88 + }
1.89 +
1.90 + if (list != List.nil()) throw new IllegalStateException("Not ending with List.nil()");
1.91 + }
1.92 +
1.93 + private static <T> void assertListEquals(Iterable<T> list, T... data) {
1.94 + int i = 0;
1.95 + Iterator<T> it = list.iterator();
1.96 +
1.97 + while (it.hasNext() && i < data.length) {
1.98 + assertEquals(it.next(), data[i++]);
1.99 + }
1.100 +
1.101 + if (it.hasNext()) {
1.102 + throw new IllegalStateException("Too many elements in the list");
1.103 + }
1.104 +
1.105 + if (i < data.length) {
1.106 + throw new IllegalStateException("Too few elements in the list");
1.107 + }
1.108 + }
1.109 +
1.110 + private static void assertEquals(Object expected, Object actual) {
1.111 + if (!Objects.equals(expected, actual)) {
1.112 + throw new IllegalStateException("Incorrect content. Expected: " + expected + ", actual: " + actual);
1.113 + }
1.114 + }
1.115 +}
