1/*
2 * Copyright (C) 2008 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 android.core;
18
19import junit.framework.TestCase;
20
21import java.io.ByteArrayInputStream;
22import java.io.PushbackInputStream;
23import android.test.suitebuilder.annotation.SmallTest;
24
25public class PushbackInputStreamTest extends TestCase {
26
27    @SmallTest
28    public void testPushbackInputStream() throws Exception {
29        String str = "AbCdEfGhIjKlM\nOpQrStUvWxYz";
30        ByteArrayInputStream aa = new ByteArrayInputStream(str.getBytes());
31        ByteArrayInputStream ba = new ByteArrayInputStream(str.getBytes());
32        ByteArrayInputStream ca = new ByteArrayInputStream(str.getBytes());
33
34        PushbackInputStream a = new PushbackInputStream(aa, 7);
35        try {
36            a.unread("push".getBytes());
37            assertEquals("pushAbCdEfGhIjKlM\nOpQrStUvWxYz", IOUtil.read(a));
38        } finally {
39            a.close();
40        }
41
42        PushbackInputStream b = new PushbackInputStream(ba, 9);
43        try {
44            b.unread('X');
45            assertEquals("XAbCdEfGhI", IOUtil.read(b, 10));
46        } finally {
47            b.close();
48        }
49
50        PushbackInputStream c = new PushbackInputStream(ca);
51        try {
52            assertEquals("bdfhjl\nprtvxz", IOUtil.skipRead(c));
53        } finally {
54            c.close();
55        }
56    }
57}
58