assertNull(crawlerContext.getIntervalController());

        TestIntervalController controller = new TestIntervalController();
        crawlerContext.setIntervalController(controller);
        assertSame(controller, crawlerContext.getIntervalController());

        crawlerContext.setIntervalController(null);
        assertNull(crawlerContext.getIntervalController());
    }

    /**

            final int intervalTime =
                    webConfig.getIntervalTime() != null ? webConfig.getIntervalTime() : Constants.DEFAULT_INTERVAL_TIME_FOR_WEB;
            ((FessIntervalController) crawler.getIntervalController()).setDelayMillisForWaitingNewUrl(intervalTime);

            final String includedUrlsStr = webConfig.getIncludedUrls() != null ? webConfig.getIncludedUrls() : StringUtil.EMPTY;

        this.ruleManager = ruleManager;
    }

    /**
     * Returns the interval controller.
     * @return The IntervalController.
     */
    public IntervalController getIntervalController() {
        return intervalController;
    }

    /**
     * Sets the interval controller.
     * @param intervalController The IntervalController.
     */

        this.ruleManager = ruleManager;
    }

    /**
     * Returns the interval controller.
     * @return The IntervalController instance.
     */
    public IntervalController getIntervalController() {
        return intervalController;
    }

    /**
     * Sets the interval controller.
     * @param intervalController The IntervalController instance to set.
     */