### Question:
UrlUtil { public static String normalize(String urlString) { String s = StringUtils.trimToNull(urlString); if (s == null) { return null; } while(s.endsWith("/")) { s = s.substring(0, s.length() - 1); } return s; } private  UrlUtil(); static String normalize(String urlString); static URL normalize(URL url);  }### Answer:
@Test public void normalizationStringTest() { Assert.assertEquals("http: Assert.assertEquals("http: Assert.assertEquals("http: }
@Test public void normalizationURLTest() throws Exception { Assert.assertEquals("http: Assert.assertEquals("http: Assert.assertEquals("http: }