System.setProperty("test.dir", "c:\\test1\\test2");

        value = "${test.dir}";
        assertEquals("c:\\test1\\test2", ResourceUtil.resolve(value));

    }

    @Test
    public void test_getAppType() {
        // Test default empty when no env var is set
        String originalAppType = System.getenv("FESS_APP_TYPE");

        // Since we can't modify environment variables directly,