diff --git a/src/meta/mod.rs b/src/meta/mod.rs
index e8384fd19..b7aa062ea 100644
--- a/src/meta/mod.rs
+++ b/src/meta/mod.rs
@@ -372,7 +372,10 @@ mod tests {
     use crate::flags::PermissionFlag;
 
     use super::Meta;
-    use std::fs::File;
+    use std::{
+        fs::File,
+        io::{BufWriter, Write},
+    };
     use tempfile::tempdir;
 
     #[cfg(unix)]
@@ -436,4 +439,33 @@ mod tests {
                 && meta_b.access_control.is_none()
         );
     }
+
+    #[test]
+    fn test_calculate_total_file_size_empty() {
+        let dir = assert_fs::TempDir::new().unwrap();
+        let path_file = dir.path().join("100B-text.txt");
+        File::create(&path_file).expect("failed to create file");
+
+        assert!(Meta::calculate_total_file_size(path_file.as_path()) == 0);
+    }
+
+    #[test]
+    fn test_calculate_total_file_size_file_100b() {
+        let dir = assert_fs::TempDir::new().unwrap();
+        let path_file = dir.path().join("100B-text.txt");
+        let file = File::create(&path_file).expect("failed to create file");
+
+        let mut buff_writer = BufWriter::new(file);
+
+        let buffer = vec![0u8; 100];
+
+        buff_writer
+            .write_all(&buffer)
+            .expect("failed to write bytes to file");
+        buff_writer
+            .flush()
+            .expect("failed to write all bytes to file");
+
+        assert!(Meta::calculate_total_file_size(path_file.as_path()) == 100);
+    }
 }