jgit/org.eclipse.jgit.test/tst/org/eclipse/jgit/treewalk/filter/PathSuffixFilterTest.java

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package org.eclipse.jgit.treewalk.filter;

import static org.eclipse.jgit.lib.Constants.OBJ_BLOB;
import static org.junit.Assert.assertEquals;

import java.io.IOException;
import java.util.LinkedList;
import java.util.List;

import org.eclipse.jgit.dircache.DirCache;
import org.eclipse.jgit.dircache.DirCacheBuilder;
import org.eclipse.jgit.dircache.DirCacheEntry;
import org.eclipse.jgit.junit.RepositoryTestCase;
import org.eclipse.jgit.lib.FileMode;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectInserter;
import org.eclipse.jgit.treewalk.TreeWalk;
import org.junit.Test;

public class PathSuffixFilterTest extends RepositoryTestCase {

	@Test
	public void testNonRecursiveFiltering() throws IOException {
		final ObjectInserter odi = db.newObjectInserter();
		final ObjectId aSth = odi.insert(OBJ_BLOB, "a.sth".getBytes());
		final ObjectId aTxt = odi.insert(OBJ_BLOB, "a.txt".getBytes());
		final DirCache dc = db.readDirCache();
		final DirCacheBuilder builder = dc.builder();
		final DirCacheEntry aSthEntry = new DirCacheEntry("a.sth");
		aSthEntry.setFileMode(FileMode.REGULAR_FILE);
		aSthEntry.setObjectId(aSth);
		final DirCacheEntry aTxtEntry = new DirCacheEntry("a.txt");
		aTxtEntry.setFileMode(FileMode.REGULAR_FILE);
		aTxtEntry.setObjectId(aTxt);
		builder.add(aSthEntry);
		builder.add(aTxtEntry);
		builder.finish();
		final ObjectId treeId = dc.writeTree(odi);
		odi.flush();


		final TreeWalk tw = new TreeWalk(db);
		tw.setFilter(PathSuffixFilter.create(".txt"));
		tw.addTree(treeId);

		List<String> paths = new LinkedList<String>();
		while (tw.next()) {
			paths.add(tw.getPathString());
		}

		List<String> expected =  new LinkedList<String>();
		expected.add("a.txt");

		assertEquals(expected, paths);
	}

	@Test
	public void testRecursiveFiltering() throws IOException {
		final ObjectInserter odi = db.newObjectInserter();
		final ObjectId aSth = odi.insert(OBJ_BLOB, "a.sth".getBytes());
		final ObjectId aTxt = odi.insert(OBJ_BLOB, "a.txt".getBytes());
		final ObjectId bSth = odi.insert(OBJ_BLOB, "b.sth".getBytes());
		final ObjectId bTxt = odi.insert(OBJ_BLOB, "b.txt".getBytes());
		final DirCache dc = db.readDirCache();
		final DirCacheBuilder builder = dc.builder();
		final DirCacheEntry aSthEntry = new DirCacheEntry("a.sth");
		aSthEntry.setFileMode(FileMode.REGULAR_FILE);
		aSthEntry.setObjectId(aSth);
		final DirCacheEntry aTxtEntry = new DirCacheEntry("a.txt");
		aTxtEntry.setFileMode(FileMode.REGULAR_FILE);
		aTxtEntry.setObjectId(aTxt);
		builder.add(aSthEntry);
		builder.add(aTxtEntry);
		final DirCacheEntry bSthEntry = new DirCacheEntry("sub/b.sth");
		bSthEntry.setFileMode(FileMode.REGULAR_FILE);
		bSthEntry.setObjectId(bSth);
		final DirCacheEntry bTxtEntry = new DirCacheEntry("sub/b.txt");
		bTxtEntry.setFileMode(FileMode.REGULAR_FILE);
		bTxtEntry.setObjectId(bTxt);
		builder.add(bSthEntry);
		builder.add(bTxtEntry);
		builder.finish();
		final ObjectId treeId = dc.writeTree(odi);
		odi.flush();


		final TreeWalk tw = new TreeWalk(db);
		tw.setRecursive(true);
		tw.setFilter(PathSuffixFilter.create(".txt"));
		tw.addTree(treeId);

		List<String> paths = new LinkedList<String>();
		while (tw.next()) {
			paths.add(tw.getPathString());
		}

		List<String> expected =  new LinkedList<String>();
		expected.add("a.txt");
		expected.add("sub/b.txt");

		assertEquals(expected, paths);
	}

}