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1 /* Copyright 2015 Google Inc. All Rights Reserved.
2 
3    Distributed under MIT license.
4    See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
5 */
6 
7 package org.brotli.dec;
8 
9 import static org.junit.Assert.assertArrayEquals;
10 
11 import java.io.ByteArrayInputStream;
12 import java.io.ByteArrayOutputStream;
13 import java.io.IOException;
14 import org.junit.Test;
15 import org.junit.runner.RunWith;
16 import org.junit.runners.JUnit4;
17 
18 /**
19  * Tests for {@link Decode}.
20  */
21 @RunWith(JUnit4.class)
22 public class DecodeTest {
23 
readUniBytes(String uniBytes)24   static byte[] readUniBytes(String uniBytes) {
25     byte[] result = new byte[uniBytes.length()];
26     for (int i = 0; i < result.length; ++i) {
27       result[i] = (byte) uniBytes.charAt(i);
28     }
29     return result;
30   }
31 
decompress(byte[] data, boolean byByte)32   private byte[] decompress(byte[] data, boolean byByte) throws IOException {
33     byte[] buffer = new byte[65536];
34     ByteArrayInputStream input = new ByteArrayInputStream(data);
35     ByteArrayOutputStream output = new ByteArrayOutputStream();
36     BrotliInputStream brotliInput = new BrotliInputStream(input);
37     if (byByte) {
38       byte[] oneByte = new byte[1];
39       while (true) {
40         int next = brotliInput.read();
41         if (next == -1) {
42           break;
43         }
44         oneByte[0] = (byte) next;
45         output.write(oneByte, 0, 1);
46       }
47     } else {
48       while (true) {
49         int len = brotliInput.read(buffer, 0, buffer.length);
50         if (len <= 0) {
51           break;
52         }
53         output.write(buffer, 0, len);
54       }
55     }
56     brotliInput.close();
57     return output.toByteArray();
58   }
59 
checkDecodeResource(String expected, String compressed)60   private void checkDecodeResource(String expected, String compressed) throws IOException {
61     byte[] expectedBytes = readUniBytes(expected);
62     byte[] compressedBytes = readUniBytes(compressed);
63     byte[] actual = decompress(compressedBytes, false);
64     assertArrayEquals(expectedBytes, actual);
65     byte[] actualByByte = decompress(compressedBytes, true);
66     assertArrayEquals(expectedBytes, actualByByte);
67   }
68 
69   @Test
testEmpty()70   public void testEmpty() throws IOException {
71     checkDecodeResource(
72         "",
73         "\u0006");
74   }
75 
76   @Test
testX()77   public void testX() throws IOException {
78     checkDecodeResource(
79         "X",
80         "\u000B\u0000\u0080X\u0003");
81   }
82 
83   @Test
testX10Y10()84   public void testX10Y10() throws IOException {
85     checkDecodeResource(
86         "XXXXXXXXXXYYYYYYYYYY",
87         "\u001B\u0013\u0000\u0000\u00A4\u00B0\u00B2\u00EA\u0081G\u0002\u008A");
88   }
89 
90   @Test
testX64()91   public void testX64() throws IOException {
92     checkDecodeResource(
93         "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
94         "\u001B\u003F\u0000\u0000$\u00B0\u00E2\u0099\u0080\u0012");
95   }
96 
97   @Test
testUkkonooa()98   public void testUkkonooa() throws IOException {
99     checkDecodeResource(
100         "ukko nooa, ukko nooa oli kunnon mies, kun han meni saunaan, "
101         + "pisti laukun naulaan, ukko nooa, ukko nooa oli kunnon mies.",
102         "\u001Bv\u0000\u0000\u0014J\u00AC\u009Bz\u00BD\u00E1\u0097\u009D\u007F\u008E\u00C2\u0082"
103         + "6\u000E\u009C\u00E0\u0090\u0003\u00F7\u008B\u009E8\u00E6\u00B6\u0000\u00AB\u00C3\u00CA"
104         + "\u00A0\u00C2\u00DAf6\u00DC\u00CD\u0080\u008D.!\u00D7n\u00E3\u00EAL\u00B8\u00F0\u00D2"
105         + "\u00B8\u00C7\u00C2pM:\u00F0i~\u00A1\u00B8Es\u00AB\u00C4W\u001E");
106   }
107 
108   @Test
testMonkey()109   public void testMonkey() throws IOException {
110     checkDecodeResource(
111         "znxcvnmz,xvnm.,zxcnv.,xcn.z,vn.zvn.zxcvn.,zxcn.vn.v,znm.,vnzx.,vnzxc.vn.z,vnz.,nv.z,nvmz"
112         + "xc,nvzxcvcnm.,vczxvnzxcnvmxc.zmcnvzm.,nvmc,nzxmc,vn.mnnmzxc,vnxcnmv,znvzxcnmv,.xcnvm,zxc"
113         + "nzxv.zx,qweryweurqioweupropqwutioweupqrioweutiopweuriopweuriopqwurioputiopqwuriowuqeriou"
114         + "pqweropuweropqwurweuqriopuropqwuriopuqwriopuqweopruioqweurqweuriouqweopruioupqiytioqtyio"
115         + "wtyqptypryoqweutioioqtweqruowqeytiowquiourowetyoqwupiotweuqiorweuqroipituqwiorqwtioweuri"
116         + "ouytuioerytuioweryuitoweytuiweyuityeruirtyuqriqweuropqweiruioqweurioqwuerioqwyuituierwot"
117         + "ueryuiotweyrtuiwertyioweryrueioqptyioruyiopqwtjkasdfhlafhlasdhfjklashjkfhasjklfhklasjdfh"
118         + "klasdhfjkalsdhfklasdhjkflahsjdkfhklasfhjkasdfhasfjkasdhfklsdhalghhaf;hdklasfhjklashjklfa"
119         + "sdhfasdjklfhsdjklafsd;hkldadfjjklasdhfjasddfjklfhakjklasdjfkl;asdjfasfljasdfhjklasdfhjka"
120         + "ghjkashf;djfklasdjfkljasdklfjklasdjfkljasdfkljaklfj",
121         "\u001BJ\u0003\u0000\u008C\u0094n\u00DE\u00B4\u00D7\u0096\u00B1x\u0086\u00F2-\u00E1\u001A"
122         + "\u00BC\u000B\u001C\u00BA\u00A9\u00C7\u00F7\u00CCn\u00B2B4QD\u008BN\u0013\b\u00A0\u00CDn"
123         + "\u00E8,\u00A5S\u00A1\u009C],\u001D#\u001A\u00D2V\u00BE\u00DB\u00EB&\u00BA\u0003e|\u0096j"
124         + "\u00A2v\u00EC\u00EF\u0087G3\u00D6\'\u000Ec\u0095\u00E2\u001D\u008D,\u00C5\u00D1(\u009F`"
125         + "\u0094o\u0002\u008B\u00DD\u00AAd\u0094,\u001E;e|\u0007EZ\u00B2\u00E2\u00FCI\u0081,\u009F"
126         + "@\u00AE\u00EFh\u0081\u00AC\u0016z\u000F\u00F5;m\u001C\u00B9\u001E-_\u00D5\u00C8\u00AF^"
127         + "\u0085\u00AA\u0005\u00BESu\u00C2\u00B0\"\u008A\u0015\u00C6\u00A3\u00B1\u00E6B\u0014"
128         + "\u00F4\u0084TS\u0019_\u00BE\u00C3\u00F2\u001D\u00D1\u00B7\u00E5\u00DD\u00B6\u00D9#\u00C6"
129         + "\u00F6\u009F\u009E\u00F6Me0\u00FB\u00C0qE\u0004\u00AD\u0003\u00B5\u00BE\u00C9\u00CB"
130         + "\u00FD\u00E2PZFt\u0004\r\u00FF \u0004w\u00B2m\'\u00BFG\u00A9\u009D\u001B\u0096,b\u0090#"
131         + "\u008B\u00E0\u00F8\u001D\u00CF\u00AF\u001D=\u00EE\u008A\u00C8u#f\u00DD\u00DE\u00D6m"
132         + "\u00E3*\u0082\u008Ax\u008A\u00DB\u00E6 L\u00B7\\c\u00BA0\u00E3?\u00B6\u00EE\u008C\""
133         + "\u00A2*\u00B0\"\n\u0099\u00FF=bQ\u00EE\b\u00F6=J\u00E4\u00CC\u00EF\"\u0087\u0011\u00E2"
134         + "\u0083(\u00E4\u00F5\u008F5\u0019c[\u00E1Z\u0092s\u00DD\u00A1P\u009D8\\\u00EB\u00B5\u0003"
135         + "jd\u0090\u0094\u00C8\u008D\u00FB/\u008A\u0086\"\u00CC\u001D\u0087\u00E0H\n\u0096w\u00909"
136         + "\u00C6##H\u00FB\u0011GV\u00CA \u00E3B\u0081\u00F7w2\u00C1\u00A5\\@!e\u0017@)\u0017\u0017"
137         + "lV2\u00988\u0006\u00DC\u0099M3)\u00BB\u0002\u00DFL&\u0093l\u0017\u0082\u0086 \u00D7"
138         + "\u0003y}\u009A\u0000\u00D7\u0087\u0000\u00E7\u000Bf\u00E3Lfqg\b2\u00F9\b>\u00813\u00CD"
139         + "\u0017r1\u00F0\u00B8\u0094RK\u00901\u008Eh\u00C1\u00EF\u0090\u00C9\u00E5\u00F2a\tr%"
140         + "\u00AD\u00EC\u00C5b\u00C0\u000B\u0012\u0005\u00F7\u0091u\r\u00EEa..\u0019\t\u00C2\u0003"
141     );
142   }
143 
144   @Test
testFox()145   public void testFox() throws IOException {
146     checkDecodeResource(
147         "The quick brown fox jumps over the lazy dog",
148         "\u001B*\u0000\u0000\u0004\u0004\u00BAF:\u0085\u0003\u00E9\u00FA\f\u0091\u0002H\u0011,"
149         + "\u00F3\u008A:\u00A3V\u007F\u001A\u00AE\u00BF\u00A4\u00AB\u008EM\u00BF\u00ED\u00E2\u0004K"
150         + "\u0091\u00FF\u0087\u00E9\u001E");
151   }
152 
153   @Test
testUtils()154   public void testUtils() {
155     new Context();
156     new Decode();
157     new Dictionary();
158     new Huffman();
159   }
160 }
161