assertTrue(ComponentUtil.hasQueryParser());
    }

    public void test_hasViewHelper() {
        assertFalse(ComponentUtil.hasViewHelper());

        ComponentUtil.register(new Object(), "viewHelper");
        assertTrue(ComponentUtil.hasViewHelper());
    }

    public void test_hasQueryHelper() {
        assertFalse(ComponentUtil.hasQueryHelper());

        return hasComponent(QUERY_PARSER);
    }

    /**
     * Checks if view helper is available.
     * @return True if view helper is available, false otherwise.
     */
    public static boolean hasViewHelper() {
        return hasComponent(VIEW_HELPER);
    }

    /**
     * Checks if query helper is available.
     * @return True if query helper is available, false otherwise.
     */