test(server): fix flaky pipeline disabled test

tests/server.rs

@@ -438,7 +438,7 @@ fn expect_continue() {
 }
 
 #[test]
-fn pipline_disabled() {
+fn pipeline_disabled() {
     let server = serve();
     let mut req = connect(server.addr());
     server.reply().status(hyper::Ok);
@@ -456,9 +456,24 @@ fn pipline_disabled() {
     let mut buf = vec![0; 4096];
     let n = req.read(&mut buf).expect("read 1");
     assert_ne!(n, 0);
-    let n = req.read(&mut buf).expect("read 2");
+    // Woah there. What?
+    //
+    // This test is wishy-washy because of race conditions in access of the
+    // socket. The test is still useful, since it allows for the responses
+    // to be received in 2 reads. But it might sometimes come in 1 read.
+    //
+    // TODO: add in a delay to the `ServeReply` interface, to allow this
+    // delay to prevent the 2 writes from happening before this test thread
+    // can read from the socket.
+    match req.read(&mut buf) {
+        Ok(n) => {
+            // won't be 0, because we didn't say to close, and so socket
+            // will be open until `server` drops
             assert_ne!(n, 0);
         }
+        Err(_) => (),
+    }
+}
 
 #[test]
 fn pipeline_enabled() {
@@ -579,8 +594,6 @@ impl NewService for TestService {
     fn new_service(&self) -> std::io::Result<TestService> {
         Ok(self.clone())
     }
-
-
 }
 
 impl Service for TestService {