assertEquals("test/path", emptyGenerator.expandPath("test/path"));
        assertNull(emptyGenerator.expandPath(null));

        // Test with file path mappings
        emptyGenerator.filePathMap.put("${path}/test", "/usr/bin/test");
        assertEquals("/usr/bin/test", emptyGenerator.expandPath("${path}/test"));
        assertEquals("other/path", emptyGenerator.expandPath("other/path"));
    }

    @Test