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 libcore.java.io;
18
19import java.io.ByteArrayInputStream;
20import java.io.InputStreamReader;
21import junit.framework.TestCase;
22
23/**
24 * Checks basic InputStreamReader functionality.
25 */
26public class OldAndroidInputStreamReaderTest extends TestCase {
27
28    /**
29     * Checks if ASCII encoding works with InputStreamReader
30     */
31    public void testAscii() throws Exception {
32        String str = "AbCdEfGhIjKlMnOpQrStUvWxYzX";
33        ByteArrayInputStream aa = new ByteArrayInputStream(str.getBytes("ISO8859_1"));
34        InputStreamReader a = new InputStreamReader(aa, "ISO8859_1");
35
36        try {
37            int x = a.read();
38            assertEquals('A', x);
39            char[] c = new char[26];
40            x = a.read(c, 0, 26);
41            assertEquals("ISO-8859-1", a.getEncoding());
42            assertEquals(26, x);
43            assertEquals("bCdEfGhIjKlMnOpQrStUvWxYzX", String.valueOf(c));
44        } finally {
45            a.close();
46        }
47    }
48
49    /**
50     * Checks if Utf8 encoding works with InputStreamReader
51     */
52    public void testUtf8() throws Exception {
53        String str = "AbCdEfGhIjKlMnOpQrStUvWxYzX" +
54                "\u00a3\u00c5\u00c9";       // total of 30 characters
55        ByteArrayInputStream aa =
56                new ByteArrayInputStream(str.getBytes());
57
58        InputStreamReader a = new InputStreamReader(aa);
59
60        try {
61            assertEquals("UTF-8", a.getEncoding());
62
63            int x = a.read();
64            assertEquals('A', x);
65
66            char[] c = new char[29];
67            x = a.read(c, 0, 3);
68            assertEquals(3, x);
69            assertEquals("bCd", new String(c, 0, 3));
70
71            x = a.read(c, 3, 26);
72            assertEquals(26, x);
73            assertEquals("EfGhIjKlMnOpQrStUvWxYzX\u00a3\u00c5\u00c9", new String(c, 3, 26));
74        } finally {
75            a.close();
76        }
77    }
78
79    /**
80     * Checks if several encodings works with InputStreamReader
81     */
82    public void testStringy() throws Exception {
83        String src = "The quick brown fox\u00A0\u00FF" +
84                "\uFFFC\uD7C5\uDC03bloof";
85
86        String[] enc = new String[]{
87                "utf-8", "us-ascii", "iso-8859-1", "utf-16be", "utf-16le",
88                "utf-16",
89        };
90
91        for (int i = 0; i < enc.length; i++) {
92            byte[] ba = src.getBytes(enc[i]);
93
94            String s1 = new String(ba, enc[i]);
95
96            ByteArrayInputStream bais = new ByteArrayInputStream(ba);
97            InputStreamReader r = new InputStreamReader(bais, enc[i]);
98            try {
99                char[] ca = new char[600];
100                int n = r.read(ca, 0, 600);
101
102                String s2 = new String(ca, 0, n);
103                assertEquals(s1, s2);
104            } finally {
105                r.close();
106            }
107        }
108    }
109}
110