assertTrue(result.contains("Test exception"));
        assertTrue(result.contains("TestScoreBooster : 300"));
    }

    // Test addScoreBooster with different priorities
    @Test
    public void test_addScoreBooster_sortsByPriority() {
        PriorityTrackingBooster booster1 = new PriorityTrackingBooster(1, 100L);

    }

    /**
     * Extracts and normalizes language preferences from request parameters or browser locale.
     *
     * This method prioritizes explicit language parameters over browser locale settings
     * and handles special cases like "all languages" selection.
     *
     * @param request The HTTP servlet request