JGit checkout of directory

jgit-checkout-dir.java

@Test
public void testCheckoutOfDirectoryShouldBeRecursive() throws Exception {
	File a = writeTrashFile("dir/a.txt", "A");
	File b = writeTrashFile("dir/sub/b.txt", "B");
	git.add().addFilepattern("dir").call();

	write(a, "modified");
	write(b, "modified");
	git.checkout().addPath("dir").call();

	assertThat(read(a), is("A"));
	assertThat(read(b), is("B"));
}