Small improvements (#27)

* Return error instead of panicking if reader buffer is inadequate
* Simplify loop
* Remove unnecessary mut
* Simplify increment
* Improve variable name
* Simplify loop
* Simplify loops
* Improve documentation and simplify loop

tests/integration_test_single.rs

@@ -66,7 +66,7 @@ async fn publish_core<'b>(
     qos: QualityOfService,
     topic: &str,
     message: &str,
-    err: bool,
+    should_err: bool,
 ) -> Result<(), ReasonCode> {
     info!(
         "[Publisher] Connection to broker with username {} and password {}",
@@ -85,7 +85,7 @@ async fn publish_core<'b>(
         .send_message(topic, message.as_bytes(), qos, false)
         .await;
     info!("[PUBLISHER] sent");
-    if err == true {
+    if should_err {
         assert_err!(result);
     } else {
         assert_ok!(result);

tests/load_test.rs

@@ -83,7 +83,7 @@ async fn publish_core<'b>(
             .await;
         info!("[PUBLISHER] sent {}", count);
         assert_ok!(result);
-        count = count + 1;
+        count += 1;
         if count == amount {
             break;
         }
@@ -150,7 +150,7 @@ async fn receive_core<'b>(
         let act_message = String::from_utf8_lossy(msg?.1);
         info!("[Receiver] Got new {}. message: {}", count, act_message);
         assert_eq!(act_message, MSG);
-        count = count + 1;
+        count += 1;
         if count == amount {
             break;
         }