1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package libcore.internal;
18
19import junit.framework.TestCase;
20import libcore.internal.StringPool;
21
22public final class StringPoolTest extends TestCase {
23
24    public void testStringPool() {
25      StringPool stringPool = new StringPool();
26      String bcd = stringPool.get(new char[] { 'a', 'b', 'c', 'd', 'e' }, 1, 3);
27      assertEquals("bcd", bcd);
28      assertSame(bcd, stringPool.get(new char[] { 'a', 'b', 'c', 'd', 'e' }, 1, 3));
29    }
30
31    public void testHashCollision() {
32      StringPool stringPool = new StringPool();
33      char[] a = { (char) 1, (char) 0 };
34      char[] b = { (char) 0, (char) 31 };
35      assertEquals(new String(a).hashCode(), new String(b).hashCode());
36
37      String aString = stringPool.get(a, 0, 2);
38      assertEquals(new String(a), aString);
39      String bString = stringPool.get(b, 0, 2);
40      assertEquals(new String(b), bString);
41      assertSame(bString, stringPool.get(b, 0, 2));
42      assertNotSame(aString, stringPool.get(a, 0, 2));
43    }
44}
45