@Test
public void parse8() throws Exception {

    URL url0 = URLParser.parse("http://:@");
    Assert.assertEquals("http", url0.getProtocol());
    Assert.assertEquals(null, url0.getUsername());
    Assert.assertEquals(null, url0.getPassword());
    Assert.assertEquals(null, url0.getHost());
    Assert.assertEquals(null, url0.getPort());
    Assert.assertEquals(null, url0.getPath());
}