@Test
public void topicValidatorTest() {

    try {
        Validators.checkTopic("Hello");
        Validators.checkTopic("%RETRY%Hello");
        Validators.checkTopic("_%RETRY%Hello");
        Validators.checkTopic("-%RETRY%Hello");
        Validators.checkTopic("223-%RETRY%Hello");
    } catch (Exception e) {
        e.printStackTrace();
        Assert.assertTrue(false);
    }
}