### Question:
LocalFileUtils { public static List<String> listFileRootsForSystem() { List<String> fileRoots = new ArrayList<String>(); File[] roots = File.listRoots(); for (File root : roots) { fileRoots.add(root.getPath()); } return fileRoots; }  static List<String> listFileRootsForSystem();  }### Answer:
@Test public void testListFileRootsForSystem() { System.out.println("listFileRootsForSystem"); List expResult = null; List result = LocalFileUtils.listFileRootsForSystem(); assertNotNull(result); }