1/*
2 *  Licensed to the Apache Software Foundation (ASF) under one or more
3 *  contributor license agreements.  See the NOTICE file distributed with
4 *  this work for additional information regarding copyright ownership.
5 *  The ASF licenses this file to You under the Apache License, Version 2.0
6 *  (the "License"); you may not use this file except in compliance with
7 *  the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *  Unless required by applicable law or agreed to in writing, software
12 *  distributed under the License is distributed on an "AS IS" BASIS,
13 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *  See the License for the specific language governing permissions and
15 *  limitations under the License.
16 */
17
18package libcore.io;
19
20import java.util.Arrays;
21import junit.framework.TestCase;
22
23public final class Base64Test extends TestCase {
24
25    public void testDecodeEmpty() throws Exception {
26        assertEquals("[]", Arrays.toString(Base64.decode(new byte[0])));
27    }
28
29    public void testEncode() throws Exception {
30        assertEncoded("");
31        assertEncoded("Eg==", 0x12);
32        assertEncoded("EjQ=", 0x12, 0x34 );
33        assertEncoded("EjRW", 0x12, 0x34, 0x56);
34        assertEncoded("EjRWeA==", 0x12, 0x34, 0x56, 0x78);
35        assertEncoded("EjRWeJo=", 0x12, 0x34, 0x56, 0x78, 0x9A);
36        assertEncoded("EjRWeJq8", 0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc);
37    }
38
39    public void testEncodeDoesNotWrap() {
40        int[] data = new int[61];
41        Arrays.fill(data, 0xff);
42        String expected = "///////////////////////////////////////////////////////////////////////"
43                + "//////////w=="; // 84 chars
44        assertEncoded(expected, data);
45    }
46
47    public void assertEncoded(String expected , int... data) {
48        byte[] dataBytes = new byte[data.length];
49        for (int i = 0; i < data.length; i++) {
50            dataBytes[i] = (byte) data[i];
51        }
52        assertEquals(expected, Base64.encode(dataBytes));
53    }
54}
55
56