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.ByteArrayOutputStream;
23import java.io.DataInputStream;
24import java.io.DataOutputStream;
25import android.test.suitebuilder.annotation.SmallTest;
26
27public class DataInputStreamTest extends TestCase {
28
29    @SmallTest
30    public void testDataInputStream() throws Exception {
31        String str = "AbCdEfGhIjKlM\nOpQ\rStUvWxYz";
32        ByteArrayInputStream aa = new ByteArrayInputStream(str.getBytes());
33        ByteArrayInputStream ba = new ByteArrayInputStream(str.getBytes());
34        ByteArrayInputStream ca = new ByteArrayInputStream(str.getBytes());
35        ByteArrayInputStream da = new ByteArrayInputStream(str.getBytes());
36
37        DataInputStream a = new DataInputStream(aa);
38        try {
39            assertEquals(str, IOUtil.read(a));
40        } finally {
41            a.close();
42        }
43
44        DataInputStream b = new DataInputStream(ba);
45        try {
46            assertEquals("AbCdEfGhIj", IOUtil.read(b, 10));
47        } finally {
48            b.close();
49        }
50
51        DataInputStream c = new DataInputStream(ca);
52        try {
53            assertEquals("bdfhjl\np\rtvxz", IOUtil.skipRead(c));
54        } finally {
55            c.close();
56        }
57
58        DataInputStream d = new DataInputStream(da);
59        try {
60            assertEquals("AbCdEfGhIjKlM", d.readLine());
61            assertEquals("OpQ", d.readLine());
62            assertEquals("StUvWxYz", d.readLine());
63        } finally {
64            d.close();
65        }
66
67        ByteArrayOutputStream e = new ByteArrayOutputStream();
68        DataOutputStream f = new DataOutputStream(e);
69        try {
70            f.writeBoolean(true);
71            f.writeByte('a');
72            f.writeBytes("BCD");
73            f.writeChar('e');
74            f.writeChars("FGH");
75            f.writeUTF("ijklm");
76            f.writeDouble(1);
77            f.writeFloat(2);
78            f.writeInt(3);
79            f.writeLong(4);
80            f.writeShort(5);
81        } finally {
82            f.close();
83        }
84
85        ByteArrayInputStream ga = new ByteArrayInputStream(e.toByteArray());
86        DataInputStream g = new DataInputStream(ga);
87
88        try {
89            assertTrue(g.readBoolean());
90            assertEquals('a', g.readByte());
91            assertEquals(2, g.skipBytes(2));
92            assertEquals('D', g.readByte());
93            assertEquals('e', g.readChar());
94            assertEquals('F', g.readChar());
95            assertEquals('G', g.readChar());
96            assertEquals('H', g.readChar());
97            assertEquals("ijklm", g.readUTF());
98            assertEquals(1, g.readDouble(), 0);
99            assertEquals(2f, g.readFloat(), 0f);
100            assertEquals(3, g.readInt());
101            assertEquals(4, g.readLong());
102            assertEquals(5, g.readShort());
103        } finally {
104            g.close();
105        }
106    }
107}
108