diff -r d5e6c8c92d87 -r ea459da15b30 rust/hedgewars-network-protocol/src/tests/parser.rs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rust/hedgewars-network-protocol/src/tests/parser.rs	Mon Jan 31 18:24:49 2022 +0300
@@ -0,0 +1,76 @@
+use crate::{
+    parser::HwProtocolError,
+    parser::{message, server_message},
+    types::GameCfg,
+};
+
+#[test]
+fn parse_test() {
+    use crate::messages::HwProtocolMessage::*;
+
+    assert_eq!(message(b"PING\n\n"), Ok((&b""[..], Ping)));
+    assert_eq!(message(b"START_GAME\n\n"), Ok((&b""[..], StartGame)));
+    assert_eq!(
+        message(b"NICK\nit's me\n\n"),
+        Ok((&b""[..], Nick("it's me".to_string())))
+    );
+    assert_eq!(message(b"PROTO\n51\n\n"), Ok((&b""[..], Proto(51))));
+    assert_eq!(
+        message(b"QUIT\nbye-bye\n\n"),
+        Ok((&b""[..], Quit(Some("bye-bye".to_string()))))
+    );
+    assert_eq!(message(b"QUIT\n\n"), Ok((&b""[..], Quit(None))));
+    assert_eq!(
+        message(b"CMD\nwatch 49471\n\n"),
+        Ok((&b""[..], Watch(49471)))
+    );
+    assert_eq!(
+        message(b"BAN\nme\nbad\n77\n\n"),
+        Ok((&b""[..], Ban("me".to_string(), "bad".to_string(), 77)))
+    );
+
+    assert_eq!(message(b"CMD\nPART\n\n"), Ok((&b""[..], Part(None))));
+    assert_eq!(
+        message(b"CMD\nPART _msg_\n\n"),
+        Ok((&b""[..], Part(Some("_msg_".to_string()))))
+    );
+
+    assert_eq!(message(b"CMD\nRND\n\n"), Ok((&b""[..], Rnd(vec![]))));
+    assert_eq!(
+        message(b"CMD\nRND A B\n\n"),
+        Ok((&b""[..], Rnd(vec![String::from("A"), String::from("B")])))
+    );
+
+    assert_eq!(
+        message(b"CFG\nSCHEME\na\nA\n\n"),
+        Ok((
+            &b""[..],
+            Cfg(GameCfg::Scheme("a".to_string(), vec!["A".to_string()]))
+        ))
+    );
+
+    assert_eq!(
+        message(b"QUIT\n1\n2\n\n"),
+        Err(nom::Err::Error(HwProtocolError::new()))
+    );
+}
+
+#[test]
+fn parse_server_messages_test() {
+    use crate::messages::HwServerMessage::*;
+
+    assert_eq!(server_message(b"PING\n\n"), Ok((&b""[..], Ping)));
+
+    assert_eq!(
+        server_message(b"JOINING\nnoone\n\n"),
+        Ok((&b""[..], Joining("noone".to_string())))
+    );
+
+    assert_eq!(
+        server_message(b"CLIENT_FLAGS\naaa\nA\nB\n\n"),
+        Ok((
+            &b""[..],
+            ClientFlags("aaa".to_string(), vec!["A".to_string(), "B".to_string()])
+        ))
+    )
+}