From d47e855e656330ce0f47840fd8b0a0692afd3a7a Mon Sep 17 00:00:00 2001
From: Matthias Beyer <mail@beyermatthias.de>
Date: Fri, 22 Mar 2024 08:22:51 +0100
Subject: [PATCH] Add test for roundtripping u32 write/parse

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
---
 mqtt-format/src/v5/integers.rs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/mqtt-format/src/v5/integers.rs b/mqtt-format/src/v5/integers.rs
index e6702c9c..f37ec4cc 100644
--- a/mqtt-format/src/v5/integers.rs
+++ b/mqtt-format/src/v5/integers.rs
@@ -210,6 +210,19 @@ mod tests {
         assert_eq!(writer.buffer, &[0x00, 0x00, 0x00, 0x01]);
     }
 
+    #[tokio::test]
+    async fn test_write_u32() {
+        // step by some prime number
+        for i in (0..268_435_455).step_by(271) {
+            let mut writer = TestWriter { buffer: Vec::new() };
+
+            writer.write_u32(i).await.unwrap();
+
+            let out = parse_variable_u32(&mut Bytes::new(&writer.buffer)).unwrap();
+            assert_eq!(out, i);
+        }
+    }
+
     #[tokio::test]
     async fn test_write_variable_u32() {
         // step by some prime number