org.eclipse.jgit.test/tst/org/eclipse/jgit/dircache/DirCacheCGitCompatabilityTest.java

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  43
  44 package org.eclipse.jgit.dircache;
  45
  46 import java.io.BufferedReader;
  47 import java.io.File;
  48 import java.io.FileInputStream;
  49 import java.io.InputStreamReader;
  50 import java.util.ArrayList;
  51 import java.util.Iterator;
  52 import java.util.LinkedHashMap;
  53 import java.util.Map;
  54
  55 import org.eclipse.jgit.errors.CorruptObjectException;
  56 import org.eclipse.jgit.junit.LocalDiskRepositoryTestCase;
  57 import org.eclipse.jgit.lib.FileMode;
  58 import org.eclipse.jgit.lib.ObjectId;
  59 import org.eclipse.jgit.lib.Repository;
  60 import org.eclipse.jgit.treewalk.TreeWalk;
  61 import org.eclipse.jgit.util.JGitTestUtil;
  62
  63 public class DirCacheCGitCompatabilityTest extends LocalDiskRepositoryTestCase {
  64         private final File index = pathOf("gitgit.index");
  65
  66         public void testReadIndex_LsFiles() throws Exception {
  67                 final Map<String, CGitIndexRecord> ls = readLsFiles();
  68                 final DirCache dc = new DirCache(index);
  69                 assertEquals(0, dc.getEntryCount());
  70                 dc.read();
  71                 assertEquals(ls.size(), dc.getEntryCount());
  72                 {
  73                         final Iterator<CGitIndexRecord> rItr = ls.values().iterator();
  74                         for (int i = 0; rItr.hasNext(); i++)
  75                                 assertEqual(rItr.next(), dc.getEntry(i));
  76                 }
  77         }
  78
  79         public void testTreeWalk_LsFiles() throws Exception {
  80                 final Repository db = createBareRepository();
  81                 final Map<String, CGitIndexRecord> ls = readLsFiles();
  82                 final DirCache dc = new DirCache(index);
  83                 assertEquals(0, dc.getEntryCount());
  84                 dc.read();
  85                 assertEquals(ls.size(), dc.getEntryCount());
  86                 {
  87                         final Iterator<CGitIndexRecord> rItr = ls.values().iterator();
  88                         final TreeWalk tw = new TreeWalk(db);
  89                         tw.reset();
  90                         tw.setRecursive(true);
  91                         tw.addTree(new DirCacheIterator(dc));
  92                         while (rItr.hasNext()) {
  93                                 final DirCacheIterator dcItr;
  94
  95                                 assertTrue(tw.next());
  96                                 dcItr = tw.getTree(0, DirCacheIterator.class);
  97                                 assertNotNull(dcItr);
  98
  99                                 assertEqual(rItr.next(), dcItr.getDirCacheEntry());
 100                         }
 101                 }
 102         }
 103
 104         public void testUnsupportedOptionalExtension() throws Exception {
 105                 final DirCache dc = new DirCache(pathOf("gitgit.index.ZZZZ"));
 106                 dc.read();
 107                 assertEquals(1, dc.getEntryCount());
 108                 assertEquals("A", dc.getEntry(0).getPathString());
 109         }
 110
 111         public void testUnsupportedRequiredExtension() throws Exception {
 112                 final DirCache dc = new DirCache(pathOf("gitgit.index.aaaa"));
 113                 try {
 114                         dc.read();
 115                         fail("Cache loaded an unsupported extension");
 116                 } catch (CorruptObjectException err) {
 117                         assertEquals("DIRC extension 'aaaa'"
 118                                         + " not supported by this version.", err.getMessage());
 119                 }
 120         }
 121
 122         public void testCorruptChecksumAtFooter() throws Exception {
 123                 final DirCache dc = new DirCache(pathOf("gitgit.index.badchecksum"));
 124                 try {
 125                         dc.read();
 126                         fail("Cache loaded despite corrupt checksum");
 127                 } catch (CorruptObjectException err) {
 128                         assertEquals("DIRC checksum mismatch", err.getMessage());
 129                 }
 130         }
 131
 132         private static void assertEqual(final CGitIndexRecord c,
 133                         final DirCacheEntry j) {
 134                 assertNotNull(c);
 135                 assertNotNull(j);
 136
 137                 assertEquals(c.path, j.getPathString());
 138                 assertEquals(c.id, j.getObjectId());
 139                 assertEquals(c.mode, j.getRawMode());
 140                 assertEquals(c.stage, j.getStage());
 141         }
 142
 143         public void testReadIndex_DirCacheTree() throws Exception {
 144                 final Map<String, CGitIndexRecord> cList = readLsFiles();
 145                 final Map<String, CGitLsTreeRecord> cTree = readLsTree();
 146                 final DirCache dc = new DirCache(index);
 147                 assertEquals(0, dc.getEntryCount());
 148                 dc.read();
 149                 assertEquals(cList.size(), dc.getEntryCount());
 150
 151                 final DirCacheTree jTree = dc.getCacheTree(false);
 152                 assertNotNull(jTree);
 153                 assertEquals("", jTree.getNameString());
 154                 assertEquals("", jTree.getPathString());
 155                 assertTrue(jTree.isValid());
 156                 assertEquals(ObjectId
 157                                 .fromString("698dd0b8d0c299f080559a1cffc7fe029479a408"), jTree
 158                                 .getObjectId());
 159                 assertEquals(cList.size(), jTree.getEntrySpan());
 160
 161                 final ArrayList<CGitLsTreeRecord> subtrees = new ArrayList<CGitLsTreeRecord>();
 162                 for (final CGitLsTreeRecord r : cTree.values()) {
 163                         if (FileMode.TREE.equals(r.mode))
 164                                 subtrees.add(r);
 165                 }
 166                 assertEquals(subtrees.size(), jTree.getChildCount());
 167
 168                 for (int i = 0; i < jTree.getChildCount(); i++) {
 169                         final DirCacheTree sj = jTree.getChild(i);
 170                         final CGitLsTreeRecord sc = subtrees.get(i);
 171                         assertEquals(sc.path, sj.getNameString());
 172                         assertEquals(sc.path + "/", sj.getPathString());
 173                         assertTrue(sj.isValid());
 174                         assertEquals(sc.id, sj.getObjectId());
 175                 }
 176         }
 177
 178         private File pathOf(final String name) {
 179                 return JGitTestUtil.getTestResourceFile(name);
 180         }
 181
 182         private Map<String, CGitIndexRecord> readLsFiles() throws Exception {
 183                 final LinkedHashMap<String, CGitIndexRecord> r = new LinkedHashMap<String, CGitIndexRecord>();
 184                 final BufferedReader br = new BufferedReader(new InputStreamReader(
 185                                 new FileInputStream(pathOf("gitgit.lsfiles")), "UTF-8"));
 186                 try {
 187                         String line;
 188                         while ((line = br.readLine()) != null) {
 189                                 final CGitIndexRecord cr = new CGitIndexRecord(line);
 190                                 r.put(cr.path, cr);
 191                         }
 192                 } finally {
 193                         br.close();
 194                 }
 195                 return r;
 196         }
 197
 198         private Map<String, CGitLsTreeRecord> readLsTree() throws Exception {
 199                 final LinkedHashMap<String, CGitLsTreeRecord> r = new LinkedHashMap<String, CGitLsTreeRecord>();
 200                 final BufferedReader br = new BufferedReader(new InputStreamReader(
 201                                 new FileInputStream(pathOf("gitgit.lstree")), "UTF-8"));
 202                 try {
 203                         String line;
 204                         while ((line = br.readLine()) != null) {
 205                                 final CGitLsTreeRecord cr = new CGitLsTreeRecord(line);
 206                                 r.put(cr.path, cr);
 207                         }
 208                 } finally {
 209                         br.close();
 210                 }
 211                 return r;
 212         }
 213
 214         private static class CGitIndexRecord {
 215                 final int mode;
 216
 217                 final ObjectId id;
 218
 219                 final int stage;
 220
 221                 final String path;
 222
 223                 CGitIndexRecord(final String line) {
 224                         final int tab = line.indexOf('\t');
 225                         final int sp1 = line.indexOf(' ');
 226                         final int sp2 = line.indexOf(' ', sp1 + 1);
 227                         mode = Integer.parseInt(line.substring(0, sp1), 8);
 228                         id = ObjectId.fromString(line.substring(sp1 + 1, sp2));
 229                         stage = Integer.parseInt(line.substring(sp2 + 1, tab));
 230                         path = line.substring(tab + 1);
 231                 }
 232         }
 233
 234         private static class CGitLsTreeRecord {
 235                 final int mode;
 236
 237                 final ObjectId id;
 238
 239                 final String path;
 240
 241                 CGitLsTreeRecord(final String line) {
 242                         final int tab = line.indexOf('\t');
 243                         final int sp1 = line.indexOf(' ');
 244                         final int sp2 = line.indexOf(' ', sp1 + 1);
 245                         mode = Integer.parseInt(line.substring(0, sp1), 8);
 246                         id = ObjectId.fromString(line.substring(sp2 + 1, tab));
 247                         path = line.substring(tab + 1);
 248                 }
 249         }
 250 }