CIFSContext context = SingletonContext.getInstance();
        assertNotNull(context);
        assertEquals("FileOS", context.getConfig().getNativeOs());
    }

    @Test
    void testInitLoadsSystemProperties() throws CIFSException {
        // Test that system properties are loaded
        System.setProperty("jcifs.smb.client.nativeOs", "SystemOS");
        SingletonContext.init(null);