message: Check new base dir does not exist yet
diff: @@ -413,16 +413,17 @@ mod tests {
  #[test]
  fn new_base_dir_will_be_created() {
  - let dir = TempDir::new()
  + let my_base_dir = TempDir::new()
  .unwrap()
  .into_path()
  .join("non-existent-sub-dir");
  let options = CacheOptions {
  - base_dir: dir.clone(),
  + base_dir: my_base_dir.clone(),
  ..make_testing_options()
  };
  + assert!(!my_base_dir.is_dir());
  let _cache = unsafe { Cache::<MockApi, MockStorage, MockQuerier>::new(options).unwrap() };
  - assert!(dir.is_dir());
  + assert!(my_base_dir.is_dir());
  }
  #[test]
  