test case for broken transfer encoding

src/server/h1.rs

@@ -1201,6 +1201,18 @@ mod tests {
         } else {
             panic!("Error");
         }
+
+        // type in chunked
+        let mut buf = Buffer::new(
+            "GET /test HTTP/1.1\r\n\
+             transfer-encoding: chnked\r\n\r\n");
+        let req = parse_ready!(&mut buf);
+
+        if let Ok(val) = req.chunked() {
+            assert!(!val);
+        } else {
+            panic!("Error");
+        }
     }
 
     #[test]