assertNull(root.getParent());
      assertNull(root.toRealPath().getParent());
      MoreFiles.createParentDirectories(root); // test that there's no exception
    }
  }

  public void testCreateParentDirectories_relativePath() throws IOException {
    Path path = FS.getPath("nonexistent.file");
    assertNull(path.getParent());
    assertNotNull(path.toAbsolutePath().getParent());

        .containsExactlyElementsIn(locations);
  }

  public void testLocationEquals() {
    ClassLoader child = getClass().getClassLoader();
    ClassLoader parent = child.getParent();
    new EqualsTester()
        .addEqualityGroup(
            new ClassPath.LocationInfo(new File("foo.jar"), child),
            new ClassPath.LocationInfo(new File("foo.jar"), child))