tsk-44: Updating tests

src/lib.rs

@@ -7,6 +7,8 @@ pub mod test_util {
     pub mod util {
         use std::io::{self, Write};
 
+        use rand::Rng;
+
         // Function to save a Vec<u8> to a file
         pub fn save_bytes_to_file(bytes: &[u8], file_path: &String) -> io::Result<()> {
             let file = std::path::Path::new(file_path);
@@ -44,6 +46,25 @@ pub mod test_util {
             }
         }
 
+        pub fn generate_filename() -> Result<String, std::io::Error> {
+            let mut filename = String::from("track-");
+            let length = 20;
+            let characters = "abcdef0123456789";
+            let amount_of_characters = characters.len() - 1;
+            let mut rng = rand::rng();
+
+            for _ in 0..length {
+                let index = rng.random_range(0..=amount_of_characters);
+                let random_c = characters.chars().nth(index);
+
+                if let Some(c) = random_c {
+                    filename.push(c);
+                }
+            }
+
+            Ok(format!("{filename}.flac"))
+        }
+
         fn path_buf(
             directory: &String,
             filename: &String,