@Test
public void testNormalizeURLLink_addWww() throws Exception {

    /* Removing or adding “www” as the first domain label. Some websites operate in two Internet domains: one whose least significant label is “www” and another whose name
    is the result of omitting the least significant label from the name of the first. For example, http://example.com/ and http://www.example.com/ may access the same
    website. Many websites redirect the user from the www to the non-www address or vice versa. A normalizer may determine if one of these URLs redirects to the other
    and normalize all URLs appropriately.
        http://www.example.com/ → http://example.com/ */
    final String inLink = "http://example.com/";
    final String outLink = "http://www.example.com/";
    assertEquals("Adding \"www\" failed", outLink, WebContentTools.normalizeURLLink(inLink));
}