@Test
 public void testTruncatedFileReturnsDefault() throws IOException {
   assertTrue(FILE.createNewFile());
   assertEquals(0, FILE.length());
   BestEffortLongFile f = new BestEffortLongFile(FILE, 12345L);
   try {
     assertEquals(12345L, f.get());
   } finally {
     f.close();
   }
 }