refactor(body): move Sender test helper to test module

Author: tottoto

src/body/incoming.rs

@@ -350,11 +350,6 @@ impl Sender {
         }
     }
 
-    #[cfg(test)]
-    async fn ready(&mut self) -> crate::Result<()> {
-        futures_util::future::poll_fn(|cx| self.poll_ready(cx)).await
-    }
-
     /// Send trailers on trailers channel.
     #[allow(unused)]
     pub(crate) async fn send_trailers(&mut self, trailers: HeaderMap) -> crate::Result<()> {
@@ -384,11 +379,6 @@ impl Sender {
             .map_err(|err| err.into_inner().expect("just sent Ok"))
     }
 
-    #[cfg(test)]
-    pub(crate) fn abort(mut self) {
-        self.send_error(crate::Error::new_body_write_aborted());
-    }
-
     pub(crate) fn send_error(&mut self, err: crate::Error) {
         let _ = self
             .data_tx
@@ -424,6 +414,16 @@ mod tests {
     use super::{Body, DecodedLength, Incoming, Sender, SizeHint};
     use http_body_util::BodyExt;
 
+    impl Sender {
+        async fn ready(&mut self) -> crate::Result<()> {
+            futures_util::future::poll_fn(|cx| self.poll_ready(cx)).await
+        }
+
+        fn abort(mut self) {
+            self.send_error(crate::Error::new_body_write_aborted());
+        }
+    }
+
     #[test]
     fn test_size_of() {
         // These are mostly to help catch *accidentally* increasing