@Override
        public int getFileIndex() {
            return 0;
        }
    }

    @Test
    @DisplayName("open(): invalid URL path without trailing slash throws SmbException")
    void invalidUrlPathThrows() throws Exception {
        // Override the default setup for this specific test
        URL invalidUrl = new URL("smb://server/share/dir"); // no trailing '/'
        when(locator.getURL()).thenReturn(invalidUrl);