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1   /*
2    * Copyright (C) 2016, Google Inc.
3    * and other copyright owners as documented in the project's IP log.
4    *
5    * This program and the accompanying materials are made available
6    * under the terms of the Eclipse Distribution License v1.0 which
7    * accompanies this distribution, is reproduced below, and is
8    * available at http://www.eclipse.org/org/documents/edl-v10.php
9    *
10   * All rights reserved.
11   *
12   * Redistribution and use in source and binary forms, with or
13   * without modification, are permitted provided that the following
14   * conditions are met:
15   *
16   * - Redistributions of source code must retain the above copyright
17   *   notice, this list of conditions and the following disclaimer.
18   *
19   * - Redistributions in binary form must reproduce the above
20   *   copyright notice, this list of conditions and the following
21   *   disclaimer in the documentation and/or other materials provided
22   *   with the distribution.
23   *
24   * - Neither the name of the Eclipse Foundation, Inc. nor the
25   *   names of its contributors may be used to endorse or promote
26   *   products derived from this software without specific prior
27   *   written permission.
28   *
29   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
30   * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
31   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
34   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
35   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
36   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
37   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
38   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
40   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
41   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42   */
43  
44  package org.eclipse.jgit.transport;
45  
46  import static org.junit.Assert.assertEquals;
47  import static org.junit.Assert.assertFalse;
48  import static org.junit.Assert.assertSame;
49  
50  import java.io.ByteArrayInputStream;
51  import java.io.ByteArrayOutputStream;
52  import java.io.IOException;
53  
54  import org.eclipse.jgit.lib.Constants;
55  import org.eclipse.jgit.lib.ObjectId;
56  import org.eclipse.jgit.lib.ObjectInserter;
57  import org.eclipse.jgit.transport.RefAdvertiser.PacketLineOutRefAdvertiser;
58  import org.eclipse.jgit.util.NB;
59  import org.junit.Test;
60  
61  public class RefAdvertiserTest {
62  	@Test
63  	public void advertiser() throws IOException {
64  		ByteArrayOutputStream buf = new ByteArrayOutputStream();
65  		PacketLineOut pckOut = new PacketLineOut(buf);
66  		PacketLineOutRefAdvertiser adv = new PacketLineOutRefAdvertiser(pckOut);
67  
68  		// Advertisement of capability and id both happen in order of call,
69  		// which may not match Git standards. Callers are responsible for
70  		// making calls in the correct ordering. Here in this test we do them
71  		// in a "wrong" order to assert the method just writes to the network.
72  
73  		adv.advertiseCapability("test-1");
74  		adv.advertiseCapability("sideband");
75  		adv.advertiseId(id(1), "refs/heads/master");
76  		adv.advertiseId(id(4), "refs/" + padStart("F", 987));
77  		adv.advertiseId(id(2), "refs/heads/next");
78  		adv.advertiseId(id(3), "refs/Iñtërnâtiônàlizætiøn☃💩");
79  		adv.end();
80  		assertFalse(adv.isEmpty());
81  
82  		PacketLineIn pckIn = new PacketLineIn(
83  				new ByteArrayInputStream(buf.toByteArray()));
84  		String s = pckIn.readStringRaw();
85  		assertEquals(id(1).name() + " refs/heads/master\0 test-1 sideband\n",
86  				s);
87  
88  		s = pckIn.readStringRaw();
89  		assertEquals(id(4).name() + " refs/" + padStart("F", 987) + '\n', s);
90  
91  		s = pckIn.readStringRaw();
92  		assertEquals(id(2).name() + " refs/heads/next\n", s);
93  
94  		s = pckIn.readStringRaw();
95  		assertEquals(id(3).name() + " refs/Iñtërnâtiônàlizætiøn☃💩\n", s);
96  
97  		s = pckIn.readStringRaw();
98  		assertSame(PacketLineIn.END, s);
99  	}
100 
101 	private static ObjectId id(int i) {
102 		try (ObjectInserter.Formatter f = new ObjectInserter.Formatter()) {
103 			byte[] tmp = new byte[4];
104 			NB.encodeInt32(tmp, 0, i);
105 			return f.idFor(Constants.OBJ_BLOB, tmp);
106 		}
107 	}
108 
109 	private static String padStart(String s, int len) {
110 		StringBuilder b = new StringBuilder(len);
111 		for (int i = s.length(); i < len; i++) {
112 			b.append((char) ('a' + (i % 26)));
113 		}
114 		return b.append(s).toString();
115 	}
116 }