diff --git a/azalea-buf/src/serializable_uuid.rs b/azalea-buf/src/serializable_uuid.rs
index fad5edfc..be93c5fd 100644
--- a/azalea-buf/src/serializable_uuid.rs
+++ b/azalea-buf/src/serializable_uuid.rs
@@ -73,4 +73,15 @@ mod tests {
         let u = Uuid::from_int_array([0x6536bfed, 0x869548fd, 0x83a1ecd2, 0x4cf2a0fd]);
         assert_eq!(u.to_string(), "6536bfed-8695-48fd-83a1-ecd24cf2a0fd");
     }
+
+    #[test]
+    fn read_write() {
+        let u = Uuid::parse_str("6536bfed-8695-48fd-83a1-ecd24cf2a0fd").unwrap();
+        let mut buf = Vec::new();
+        u.write_into(&mut buf).unwrap();
+        println!("{:?}", buf);
+        assert_eq!(buf.len(), 16);
+        let u2 = Uuid::read_from(&mut buf.as_slice()).unwrap();
+        assert_eq!(u, u2);
+    }
 }
diff --git a/azalea-buf/src/write.rs b/azalea-buf/src/write.rs
index 8def52b3..15fa9680 100644
--- a/azalea-buf/src/write.rs
+++ b/azalea-buf/src/write.rs
@@ -181,7 +181,7 @@ impl McBufWritable for String {
 
 impl McBufWritable for u32 {
     fn write_into(&self, buf: &mut impl Write) -> Result<(), std::io::Error> {
-        i16::write_into(&(*self as i16), buf)
+        i32::write_into(&(*self as i32), buf)
     }
 }
 
diff --git a/azalea-protocol/src/lib.rs b/azalea-protocol/src/lib.rs
index b1d1a9c4..f5922e27 100755
--- a/azalea-protocol/src/lib.rs
+++ b/azalea-protocol/src/lib.rs
@@ -50,9 +50,39 @@ pub async fn connect(address: ServerAddress) -> Result<(), Box<dyn std::error::E
 
 #[cfg(test)]
 mod tests {
-    #[test]
-    fn it_works() {
-        let result = 2 + 2;
-        assert_eq!(result, 4);
+    use super::*;
+    use crate::{
+        packets::login::{
+            serverbound_hello_packet::{ProfilePublicKeyData, ServerboundHelloPacket},
+            ServerboundLoginPacket,
+        },
+        read::read_packet,
+        write::write_packet,
+    };
+    use std::io::Cursor;
+    use uuid::Uuid;
+
+    #[tokio::test]
+    async fn test_hello_packet() {
+        let  packet = ServerboundHelloPacket {
+            username: "test".to_string(),
+            public_key: Some(ProfilePublicKeyData {
+                expires_at: 0,
+                key: b"idontthinkthisreallymattersijustwantittobelongforthetest".to_vec(),
+                key_signature: b"idontthinkthisreallymattersijustwantittobelongforthetest".to_vec(),
+            }),
+            profile_id: Some(Uuid::from_u128(0)),
+        }
+        .get();
+        let mut stream = Cursor::new(Vec::new());
+        write_packet(packet, &mut stream, None, &mut None)
+            .await
+            .unwrap();
+
+        stream.set_position(0);
+
+        let _ = read_packet::<ServerboundLoginPacket, _>(&mut stream, None, &mut None)
+            .await
+            .unwrap();
     }
 }
diff --git a/azalea-protocol/src/packets/login/serverbound_hello_packet.rs b/azalea-protocol/src/packets/login/serverbound_hello_packet.rs
index 7644beae..a6443737 100755
--- a/azalea-protocol/src/packets/login/serverbound_hello_packet.rs
+++ b/azalea-protocol/src/packets/login/serverbound_hello_packet.rs
@@ -2,16 +2,35 @@ use azalea_buf::McBuf;
 use packet_macros::ServerboundLoginPacket;
 use uuid::Uuid;
 
-#[derive(Clone, Debug, McBuf, ServerboundLoginPacket)]
+#[derive(Clone, Debug, ServerboundLoginPacket, McBuf, PartialEq)]
 pub struct ServerboundHelloPacket {
     pub username: String,
     pub public_key: Option<ProfilePublicKeyData>,
     pub profile_id: Option<Uuid>,
 }
 
-#[derive(Clone, Debug, McBuf)]
+#[derive(Clone, Debug, McBuf, PartialEq)]
 pub struct ProfilePublicKeyData {
     pub expires_at: u64,
     pub key: Vec<u8>,
     pub key_signature: Vec<u8>,
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use azalea_buf::{McBufReadable, McBufWritable};
+
+    #[test]
+    fn test_read_write() {
+        let packet = ServerboundHelloPacket {
+            username: "test".to_string(),
+            public_key: None,
+            profile_id: Some(Uuid::from_u128(0)),
+        };
+        let mut buf = Vec::new();
+        packet.write_into(&mut buf).unwrap();
+        let packet2 = ServerboundHelloPacket::read_from(&mut buf.as_slice()).unwrap();
+        assert_eq!(packet, packet2);
+    }
+}