public void testShareFile() {
   assertEquals(0, mockPermissionsManager.getOfferedLocalFiles().size());
   mockPermissionsManager.addOfferedLocalFile(generateSharedFileDescriptor());
   assertEquals(1, mockPermissionsManager.getOfferedLocalFiles().size());
 }
 public void testGetSharedFiles() {
   assertEquals(0, mockPermissionsManager.getOfferedLocalFiles().size());
   testShareFile();
   assertEquals(1, mockPermissionsManager.getOfferedLocalFiles().size());
 }