// Cannot test due to reflection access limitations
            assertTrue("Cannot access DBFluteSystem fields via reflection", true);
        }
    }

    @Test
    public void test_processDBFluteSystem_setsTimeZoneProvider() {
        // When
        curtainBeforeHook.processDBFluteSystem();

        // Then
        DfFinalTimeZoneProvider provider = getDBFluteSystemTimeZoneProvider();
        if (provider != null) {