@Test
public void testAgent() {

    AllowData d1 = new AllowData();
    d1.setAgent(null);
    assertFalse(d1.isAgentValid());
    AllowData d2 = new AllowData();
    d2.setAgent("");
    assertFalse(d2.isAgentValid());
    AllowData d3 = new AllowData();
    d3.setAgent("AwesomeBot");
    assertTrue(d3.isAgentValid());
}