refactor: pass mutable vec

src/main.rs

@@ -32,13 +32,14 @@ fn main() -> io::Result<()> {
     };
 
     // Handle output stream (file or stdout)
-    let output: Box<dyn Write> = if let Some(output_path) = matches.get_one::<String>("output") {
+    let mut output: Box<dyn Write> = if let Some(output_path) = matches.get_one::<String>("output")
+    {
         Box::new(File::create(output_path)?)
     } else {
         Box::new(io::stdout())
     };
 
-    BencodeParser::new(input, output).parse()?;
+    BencodeParser::new(input, &mut output).parse()?;
 
     Ok(())
 }

src/parsers/mod.rs

@@ -192,18 +192,13 @@ mod tests {
     use super::BencodeParser;
 
     fn to_json(input_buffer: &[u8]) -> String {
-        let output_buffer = Vec::new();
+        let mut output_buffer = Vec::new();
 
-        let mut parser = BencodeParser::new(input_buffer, output_buffer);
+        let mut parser = BencodeParser::new(input_buffer, &mut output_buffer);
 
-        parser.parse().expect("bencoded to JSON conversion failed");
+        parser.parse().expect("Bencode to JSON conversion failed");
 
-        match parser.opt_captured_output() {
-            Some(captured_output) => captured_output,
-            None => panic!(
-                "capturing output is not enabled in parser, please enable it to run the tests"
-            ),
-        }
+        String::from_utf8_lossy(&output_buffer).to_string()
     }
 
     mod integers {