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44 package org.eclipse.jgit.internal.storage.dfs;
45
46 import static org.junit.Assert.assertEquals;
47 import static org.junit.Assert.assertFalse;
48 import static org.junit.Assert.assertTrue;
49
50 import java.io.IOException;
51 import java.nio.ByteBuffer;
52 import java.util.Arrays;
53 import java.util.Collection;
54 import java.util.List;
55 import java.util.zip.Deflater;
56
57 import org.eclipse.jgit.internal.storage.pack.PackExt;
58 import org.eclipse.jgit.junit.JGitTestUtil;
59 import org.eclipse.jgit.junit.TestRng;
60 import org.eclipse.jgit.lib.AbbreviatedObjectId;
61 import org.eclipse.jgit.lib.Constants;
62 import org.eclipse.jgit.lib.ObjectId;
63 import org.eclipse.jgit.lib.ObjectInserter;
64 import org.eclipse.jgit.lib.ObjectLoader;
65 import org.eclipse.jgit.lib.ObjectReader;
66 import org.eclipse.jgit.util.IO;
67 import org.eclipse.jgit.util.RawParseUtils;
68 import org.junit.Before;
69 import org.junit.Test;
70
71 public class DfsInserterTest {
72 InMemoryRepository db;
73
74 @Before
75 public void setUp() {
76 db = new InMemoryRepository(new DfsRepositoryDescription("test"));
77 }
78
79 @Test
80 public void testInserterDiscardsPack() throws IOException {
81 try (ObjectInserter ins = db.newObjectInserter()) {
82 ins.insert(Constants.OBJ_BLOB, Constants.encode("foo"));
83 ins.insert(Constants.OBJ_BLOB, Constants.encode("bar"));
84 assertEquals(0, db.getObjectDatabase().listPacks().size());
85 }
86 assertEquals(0, db.getObjectDatabase().listPacks().size());
87 }
88
89 @Test
90 public void testReadFromInserterSmallObjects() throws IOException {
91 ObjectInserter ins = db.newObjectInserter();
92 ObjectId id1 = ins.insert(Constants.OBJ_BLOB, Constants.encode("foo"));
93 ObjectId id2 = ins.insert(Constants.OBJ_BLOB, Constants.encode("bar"));
94 assertEquals(0, db.getObjectDatabase().listPacks().size());
95
96 ObjectReader reader = ins.newReader();
97 assertEquals("foo", readString(reader.open(id1)));
98 assertEquals("bar", readString(reader.open(id2)));
99 assertEquals(0, db.getObjectDatabase().listPacks().size());
100 ins.flush();
101 assertEquals(1, db.getObjectDatabase().listPacks().size());
102 }
103
104 @Test
105 public void testReadFromInserterLargerObjects() throws IOException {
106 db.getObjectDatabase().getReaderOptions().setStreamFileThreshold(512);
107 DfsBlockCache.reconfigure(new DfsBlockCacheConfig()
108 .setBlockSize(512)
109 .setBlockLimit(2048));
110
111 byte[] data = new TestRng(JGitTestUtil.getName()).nextBytes(8192);
112 DfsInserter ins = (DfsInserter) db.newObjectInserter();
113 ins.setCompressionLevel(Deflater.NO_COMPRESSION);
114 ObjectId id1 = ins.insert(Constants.OBJ_BLOB, data);
115 assertEquals(0, db.getObjectDatabase().listPacks().size());
116
117 ObjectReader reader = ins.newReader();
118 assertTrue(Arrays.equals(data, readStream(reader.open(id1))));
119 assertEquals(0, db.getObjectDatabase().listPacks().size());
120 ins.flush();
121
122 List<DfsPackDescription> packs = db.getObjectDatabase().listPacks();
123 assertEquals(1, packs.size());
124 assertTrue(packs.get(0).getFileSize(PackExt.PACK) > 2048);
125 }
126
127 @Test
128 public void testReadFromFallback() throws IOException {
129 ObjectInserter ins = db.newObjectInserter();
130 ObjectId id1 = ins.insert(Constants.OBJ_BLOB, Constants.encode("foo"));
131 ins.flush();
132 ObjectId id2 = ins.insert(Constants.OBJ_BLOB, Constants.encode("bar"));
133 assertEquals(1, db.getObjectDatabase().listPacks().size());
134
135 ObjectReader reader = ins.newReader();
136 assertEquals("foo", readString(reader.open(id1)));
137 assertEquals("bar", readString(reader.open(id2)));
138 assertEquals(1, db.getObjectDatabase().listPacks().size());
139 ins.flush();
140 assertEquals(2, db.getObjectDatabase().listPacks().size());
141 }
142
143 @Test
144 public void testReaderResolve() throws IOException {
145 ObjectInserter ins = db.newObjectInserter();
146 ObjectId id1 = ins.insert(Constants.OBJ_BLOB, Constants.encode("foo"));
147 ins.flush();
148 ObjectId id2 = ins.insert(Constants.OBJ_BLOB, Constants.encode("bar"));
149 String abbr1 = ObjectId.toString(id1).substring(0, 4);
150 String abbr2 = ObjectId.toString(id2).substring(0, 4);
151 assertFalse(abbr1.equals(abbr2));
152
153 ObjectReader reader = ins.newReader();
154 Collection<ObjectId> objs;
155 objs = reader.resolve(AbbreviatedObjectId.fromString(abbr1));
156 assertEquals(1, objs.size());
157 assertEquals(id1, objs.iterator().next());
158
159 objs = reader.resolve(AbbreviatedObjectId.fromString(abbr2));
160 assertEquals(1, objs.size());
161 assertEquals(id2, objs.iterator().next());
162 }
163
164 private static String readString(ObjectLoader loader) throws IOException {
165 return RawParseUtils.decode(readStream(loader));
166 }
167
168 private static byte[] readStream(ObjectLoader loader) throws IOException {
169 ByteBuffer bb = IO.readWholeStream(loader.openStream(), 64);
170 byte[] buf = new byte[bb.remaining()];
171 bb.get(buf);
172 return buf;
173 }
174 }