@Test
  public void testRequestQuoterWithNull() {
    HttpServletRequest request = Mockito.mock(HttpServletRequest.class);
    Mockito.doReturn(null).when(request).getParameterValues("dummy");
    RequestQuoter requestQuoter = new RequestQuoter(request);
    String[] parameterValues = requestQuoter.getParameterValues("dummy");
    Assert.assertNull("It should return null " + "when there are no values for the parameter",
      parameterValues);
  }
Verify the administrator access for /logs, /stacks, /conf, /logLevel and /metrics servlets.
hbase-http/src/test/java/org/apache/hadoop/hbase/http/TestHttpServer.java