Add '-b'/'--apparent-size' option

This commit changes `diskus` default behavior: we now report "disk
usage" instead of "apparent size" in analogy to "du -sh".

At the same time however, we introduce a new `--apparent-size` option
which can be used to switch back to "apparent size".

closes #25

1 files changed, 2 insertions, 2 deletions

diff --git a/tests/walk.rs b/tests/walk.rs
index 5f2d3d2..6e1dd35 100644
--- a/tests/walk.rs
+++ b/tests/walk.rs
@@ -5,7 +5,7 @@ use std::path::PathBuf;
 
 use tempdir::TempDir;
 
-use diskus::Walk;
+use diskus::{FilesizeType, Walk};
 
 #[test]
 fn size_of_single_file() -> Result<(), Box<dyn Error>> {
@@ -16,7 +16,7 @@ fn size_of_single_file() -> Result<(), Box<dyn Error>> {
 
     let num_threads = 1;
     let root_directories = &[PathBuf::from(file_path)];
-    let walk = Walk::new(root_directories, num_threads);
+    let walk = Walk::new(root_directories, num_threads, FilesizeType::ApparentSize);
     let (size_in_bytes, errors) = walk.run();
 
     assert!(errors.is_empty());