@Test
  public void testEmptyDirectory() {
    assertThat(dir.entryCount()).isEqualTo(2);
    assertThat(dir.isEmpty()).isTrue();

    assertParentAndSelf(dir, root, dir);
  }
Tests for {@link Directory}.

@author Colin Decker
jimfs/src/test/java/com/google/common/jimfs/DirectoryTest.java