Package org.eclipse.jgit.treewalk

Source Code of org.eclipse.jgit.treewalk.TreeWalkBasicDiffTest

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package org.eclipse.jgit.treewalk;

import org.eclipse.jgit.lib.FileMode;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectWriter;
import org.eclipse.jgit.lib.RepositoryTestCase;
import org.eclipse.jgit.lib.Tree;
import org.eclipse.jgit.treewalk.filter.TreeFilter;

public class TreeWalkBasicDiffTest extends RepositoryTestCase {
  public void testMissingSubtree_DetectFileAdded_FileModified()
      throws Exception {
    final ObjectWriter ow = new ObjectWriter(db);
    final ObjectId aFileId = ow.writeBlob("a".getBytes());
    final ObjectId bFileId = ow.writeBlob("b".getBytes());
    final ObjectId cFileId1 = ow.writeBlob("c-1".getBytes());
    final ObjectId cFileId2 = ow.writeBlob("c-2".getBytes());

    // Create sub-a/empty, sub-c/empty = hello.
    final ObjectId oldTree;
    {
      final Tree root = new Tree(db);
      {
        final Tree subA = root.addTree("sub-a");
        subA.addFile("empty").setId(aFileId);
        subA.setId(ow.writeTree(subA));
      }
      {
        final Tree subC = root.addTree("sub-c");
        subC.addFile("empty").setId(cFileId1);
        subC.setId(ow.writeTree(subC));
      }
      oldTree = ow.writeTree(root);
    }

    // Create sub-a/empty, sub-b/empty, sub-c/empty.
    final ObjectId newTree;
    {
      final Tree root = new Tree(db);
      {
        final Tree subA = root.addTree("sub-a");
        subA.addFile("empty").setId(aFileId);
        subA.setId(ow.writeTree(subA));
      }
      {
        final Tree subB = root.addTree("sub-b");
        subB.addFile("empty").setId(bFileId);
        subB.setId(ow.writeTree(subB));
      }
      {
        final Tree subC = root.addTree("sub-c");
        subC.addFile("empty").setId(cFileId2);
        subC.setId(ow.writeTree(subC));
      }
      newTree = ow.writeTree(root);
    }

    final TreeWalk tw = new TreeWalk(db);
    tw.reset(new ObjectId[] { oldTree, newTree });
    tw.setRecursive(true);
    tw.setFilter(TreeFilter.ANY_DIFF);

    assertTrue(tw.next());
    assertEquals("sub-b/empty", tw.getPathString());
    assertEquals(FileMode.MISSING, tw.getFileMode(0));
    assertEquals(FileMode.REGULAR_FILE, tw.getFileMode(1));
    assertEquals(ObjectId.zeroId(), tw.getObjectId(0));
    assertEquals(bFileId, tw.getObjectId(1));

    assertTrue(tw.next());
    assertEquals("sub-c/empty", tw.getPathString());
    assertEquals(FileMode.REGULAR_FILE, tw.getFileMode(0));
    assertEquals(FileMode.REGULAR_FILE, tw.getFileMode(1));
    assertEquals(cFileId1, tw.getObjectId(0));
    assertEquals(cFileId2, tw.getObjectId(1));

    assertFalse(tw.next());
  }
}
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