} catch (NullPointerException e) {
            // Expected if constructor validates input
            assertTrue(true);
        }
    }

    // Test with different time adjustments
    public void test_withDifferentTimeAdjustments() {
        // Test zero adjustment
        FessConfig zeroConfig = new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

            @Override