@Test
 public void testGlobTranslation() {
   assertEquals("foo", GcsUtil.globToRegexp("foo"));
   assertEquals("fo[^/]*o", GcsUtil.globToRegexp("fo*o"));
   assertEquals("f[^/]*o\\.[^/]", GcsUtil.globToRegexp("f*o.?"));
   assertEquals("foo-[0-9][^/]*", GcsUtil.globToRegexp("foo-[0-9]*"));
 }