@Test
public void testNullScheme() throws Exception {

  assertTrue(PathUtils.impliesURI(new URI("/tmp"), new URI("/tmp/a")));
  assertFalse(PathUtils.impliesURI(new URI("file:/tmp"), new URI("/tmp/a")));
  assertFalse(PathUtils.impliesURI(new URI("/tmp"), new URI("file:/tmp/a")));
  // Privileges on /tmp/ are distinct from /tmp.+/ e.g. /tmp/ and /tmpdata/
  assertFalse(PathUtils.impliesURI(new URI("/tmp"), new URI("/tmpdata")));
}