|
1 package com.thoughtworks.xstream.core.util;
2
3 import com.thoughtworks.acceptance.AbstractAcceptanceTest;
4
5 public class Base64EncoderTest extends AbstractAcceptanceTest {
6
7 private Base64Encoder encoder = new Base64Encoder();
8
9 public void testEncodesEntireByteArrayAsString() {
10 byte input[] = "hello world".getBytes();
11 String  expected = "aGVsbG8gd29ybGQ=";
12 assertEquals(expected, encoder.encode(input));
13 assertByteArrayEquals(input, encoder.decode(expected));
14 }
15
16 public void testWrapsLinesAt76Chars() {
17 byte input[] = ("hello world. hello world. hello world. hello world. hello world. hello world. hello world. "
18 + "hello world. hello world. hello world. hello world. hello world. hello world. hello world. ").getBytes();
19 String expected = "aGVsbG8gd29ybGQuIGhlbGxvIHdvcmxkLiBoZWxsbyB3b3JsZC4gaGVsbG8gd29ybGQuIGhlbGxv\n"
20 + "IHdvcmxkLiBoZWxsbyB3b3JsZC4gaGVsbG8gd29ybGQuIGhlbGxvIHdvcmxkLiBoZWxsbyB3b3Js\n"
21 + "ZC4gaGVsbG8gd29ybGQuIGhlbGxvIHdvcmxkLiBoZWxsbyB3b3JsZC4gaGVsbG8gd29ybGQuIGhl\n"
22 + "bGxvIHdvcmxkLiA=";
23 assertEquals(expected, encoder.encode(input));
24 assertByteArrayEquals(input, encoder.decode(expected));
25 }
26
27 public void testPadsSingleMissingByteWhenNotMultipleOfThree() {
28 byte input[] = { 1, 2, 3, 4, 5 };
29 String expected = "AQIDBAU=";
30 assertEquals(expected, encoder.encode(input));
31 assertByteArrayEquals(input, encoder.decode(expected));
32 }
33
34 public void testPadsDoubleMissingByteWhenNotMultipleOfThree() {
35 byte input[] = { 1, 2, 3, 4 };
36 String expected = "AQIDBA==";
37 assertEquals(expected, encoder.encode(input));
38 assertByteArrayEquals(input, encoder.decode(expected));
39 }
40
41 public void testDoesNotPadWhenMultipleOfThree() {
42 byte input[] = { 1, 2, 3, 4, 5, 6 };
43 String expected = "AQIDBAUG";
44 assertEquals(expected, encoder.encode(input));
45 assertByteArrayEquals(input, encoder.decode(expected));
46 }
47
48 public void testHandlesAllPositiveBytes() {
49 byte input[] = new byte[127];
50 for (int i = 0; i < 126; i++) input[i] = (byte) (i + 1);
51 String expected = "AQIDBAUGBwgJCgsMDQ4PEBESExQVFhcYGRobHB0eHyAhIiMkJSYnKCkqKywtLi8wMTIzNDU2Nzg5\n"
52 + "Ojs8PT4/QEFCQ0RFRkdISUpLTE1OT1BRUlNUVVZXWFlaW1xdXl9gYWJjZGVmZ2hpamtsbW5vcHFy\n"
53 + "c3R1dnd4eXp7fH1+AA==";
54 assertEquals(expected, encoder.encode(input));
55 assertByteArrayEquals(input, encoder.decode(expected));
56 }
57
58 public void testHandlesAllNegativeBytes() {
59 byte input[] = new byte[128];
60 for (int i = 0; i < 127; i++) input[i] = (byte) (-1 - i);
61 String expected = "//79/Pv6+fj39vX08/Lx8O/u7ezr6uno5+bl5OPi4eDf3t3c29rZ2NfW1dTT0tHQz87NzMvKycjH\n"
62 + "xsXEw8LBwL++vby7urm4t7a1tLOysbCvrq2sq6qpqKempaSjoqGgn56dnJuamZiXlpWUk5KRkI+O\n"
63 + "jYyLiomIh4aFhIOCgQA=";
64 assertEquals(expected, encoder.encode(input));
65 assertByteArrayEquals(input, encoder.decode(expected));
66 }
67
68 public void testHandlesZeroByte() {
69 byte input[] = { 0, 0, 0, 0 };
70 String expected = "AAAAAA==";
71 assertEquals(expected, encoder.encode(input));
72 assertByteArrayEquals(input, encoder.decode(expected));
73 }
74
75 public void testProducesEmptyStringWhenNoBytesGiven() {
76 byte input[] = new byte[0];
77 String expected = "";
78 assertEquals(expected, encoder.encode(input));
79 assertByteArrayEquals(input, encoder.decode(expected));
80 }
81
82 }
83 |
Popular Tags |
Java API By Example, From Geeks To Geeks.