fix: remove dead COBS test module from usb/task.rs (tests live in donglora-cobs crate)

src/usb/task.rs

@@ -212,136 +212,3 @@ async fn route_command(
         }
     }
 }
-
-
-// ── COBS compliance tests (IEEE/ACM Cheshire & Baker 1999) ──────
-
-#[cfg(test)]
-mod tests {
-    use super::cobs_decode;
-
-    fn decode(encoded: &[u8]) -> Option<Vec<u8>> {
-        let mut buf = vec![0u8; 512];
-        cobs_decode(encoded, &mut buf).map(|n| buf[..n].to_vec())
-    }
-
-    // Wikipedia canonical vectors
-    #[test]
-    fn empty_input() {
-        assert_eq!(decode(&[0x01]), Some(vec![]));
-    }
-
-    #[test]
-    fn single_zero() {
-        assert_eq!(decode(&[0x01, 0x01]), Some(vec![0x00]));
-    }
-
-    #[test]
-    fn two_zeros() {
-        assert_eq!(decode(&[0x01, 0x01, 0x01]), Some(vec![0x00, 0x00]));
-    }
-
-    #[test]
-    fn single_nonzero() {
-        assert_eq!(decode(&[0x02, 0x11]), Some(vec![0x11]));
-    }
-
-    #[test]
-    fn zero_delimited() {
-        assert_eq!(
-            decode(&[0x01, 0x02, 0x11, 0x01]),
-            Some(vec![0x00, 0x11, 0x00])
-        );
-    }
-
-    #[test]
-    fn mixed_with_zero() {
-        assert_eq!(
-            decode(&[0x03, 0x11, 0x22, 0x02, 0x33]),
-            Some(vec![0x11, 0x22, 0x00, 0x33])
-        );
-    }
-
-    #[test]
-    fn no_zeros() {
-        assert_eq!(
-            decode(&[0x05, 0x11, 0x22, 0x33, 0x44]),
-            Some(vec![0x11, 0x22, 0x33, 0x44])
-        );
-    }
-
-    #[test]
-    fn nonzero_then_trailing_zeros() {
-        assert_eq!(
-            decode(&[0x02, 0x11, 0x01, 0x01, 0x01]),
-            Some(vec![0x11, 0x00, 0x00, 0x00])
-        );
-    }
-
-    #[test]
-    fn all_zeros_4() {
-        assert_eq!(
-            decode(&[0x01, 0x01, 0x01, 0x01, 0x01]),
-            Some(vec![0x00, 0x00, 0x00, 0x00])
-        );
-    }
-
-    #[test]
-    fn all_ff_4() {
-        assert_eq!(
-            decode(&[0x05, 0xFF, 0xFF, 0xFF, 0xFF]),
-            Some(vec![0xFF, 0xFF, 0xFF, 0xFF])
-        );
-    }
-
-    #[test]
-    fn alternating_zero_nonzero() {
-        assert_eq!(
-            decode(&[0x01, 0x02, 0x01, 0x02, 0x02, 0x02, 0x03]),
-            Some(vec![0x00, 0x01, 0x00, 0x02, 0x00, 0x03])
-        );
-    }
-
-    // The Ping case that caught the original bug
-    #[test]
-    fn ping_command_tag_zero() {
-        assert_eq!(decode(&[0x01, 0x01]), Some(vec![0x00]));
-    }
-
-    // 254-byte block boundary (code 0xFF = 254 data bytes, no implicit zero)
-    #[test]
-    fn block_254_nonzero() {
-        let input: Vec<u8> = (1..=254).collect();
-        let mut encoded = vec![0xFF];
-        encoded.extend(1u8..=254);
-        assert_eq!(decode(&encoded), Some(input));
-    }
-
-    // 255 non-zero bytes: first 254 as one block, then 1 leftover
-    #[test]
-    fn block_255_nonzero() {
-        let input: Vec<u8> = (1..=255).map(|i| i as u8).collect();
-        let mut encoded = vec![0xFF];
-        encoded.extend(1u8..=254);
-        encoded.push(0x02); // code for 1 data byte
-        encoded.push(0xFF); // the 255th byte
-        assert_eq!(decode(&encoded), Some(input));
-    }
-
-    // Error cases
-    #[test]
-    fn unexpected_zero_in_data() {
-        assert_eq!(decode(&[0x00]), None);
-    }
-
-    #[test]
-    fn truncated_input() {
-        // Code says 3 data bytes follow, but only 1 available
-        assert_eq!(decode(&[0x04, 0x11]), None);
-    }
-
-    #[test]
-    fn empty_encoded() {
-        assert_eq!(decode(&[]), Some(vec![]));
-    }
-}