diff -r 478d5372eb4a -r ae8e14d14596 rust/hedgewars-engine-messages/src/parser.rs
--- a/rust/hedgewars-engine-messages/src/parser.rs	Tue Jul 30 22:59:06 2019 +0300
+++ b/rust/hedgewars-engine-messages/src/parser.rs	Fri Aug 02 13:35:23 2019 +0200
@@ -1,10 +1,9 @@
-use nom::{Err::Error, *};
-use std::str;
-
-use super::messages::{
+use crate::messages::{
     ConfigEngineMessage::*, EngineMessage::*, KeystrokeAction::*, SyncedEngineMessage::*,
     UnorderedEngineMessage::*, *,
 };
+use nom::{Err::Error, *};
+use std::str;
 
 macro_rules! eof_slice (
   ($i:expr,) => (
@@ -129,62 +128,74 @@
             let consumed = buf.len() - tail.len();
 
             Some((consumed, msg))
-        },
+        }
         Err(Err::Incomplete(_)) => None,
         Err(Err::Error(_)) | Err(Err::Failure(_)) => unreachable!(),
     }
 }
 
-#[test]
-fn parse_length() {
-    assert_eq!(length_specifier(b"\x01"), Ok((&b""[..], 1)));
-    assert_eq!(length_specifier(b"\x00"), Ok((&b""[..], 0)));
-    assert_eq!(length_specifier(b"\x3f"), Ok((&b""[..], 63)));
-    assert_eq!(length_specifier(b"\x40\x00"), Ok((&b""[..], 64)));
-    assert_eq!(
-        length_specifier(b"\xff\xff"),
-        Ok((&b""[..], EngineMessage::MAX_LEN))
-    );
-}
+#[cfg(test)]
+mod tests {
+    use crate::messages::UnsyncedEngineMessage::*;
+    use crate::parser::*;
 
-#[test]
-fn parse_synced_messages() {
-    assert_eq!(
-        message(b"\x03L\x01\x02"),
-        Ok((&b""[..], Synced(Left(Press), 258)))
-    );
+    #[test]
+    fn parse_length() {
+        assert_eq!(length_specifier(b"\x01"), Ok((&b""[..], 1)));
+        assert_eq!(length_specifier(b"\x00"), Ok((&b""[..], 0)));
+        assert_eq!(length_specifier(b"\x3f"), Ok((&b""[..], 63)));
+        assert_eq!(length_specifier(b"\x40\x00"), Ok((&b""[..], 64)));
+        assert_eq!(
+            length_specifier(b"\xff\xff"),
+            Ok((&b""[..], EngineMessage::MAX_LEN))
+        );
+    }
 
-    assert_eq!(message(b"\x01#"), Ok((&b""[..], Synced(TimeWrap, 65535))));
+    #[test]
+    fn parse_synced_messages() {
+        assert_eq!(
+            message(b"\x03L\x01\x02"),
+            Ok((&b""[..], Synced(Left(Press), 258)))
+        );
 
-    assert_eq!(message(&vec![9, b'p', 255, 133, 151, 1, 0, 2, 0, 0]), Ok((&b""[..], Synced(Put(-31337, 65538), 0))));
-}
+        assert_eq!(message(b"\x01#"), Ok((&b""[..], Synced(TimeWrap, 65535))));
+
+        assert_eq!(
+            message(&vec![9, b'p', 255, 133, 151, 1, 0, 2, 0, 0]),
+            Ok((&b""[..], Synced(Put(-31337, 65538), 0)))
+        );
+    }
 
-#[test]
-fn parse_unsynced_messages() {
-    assert_eq!(
-        message(b"\x06shello"),
-        Ok((&b""[..], Unordered(ChatMessage(String::from("hello")))))
-    );
-}
+    #[test]
+    fn parse_unsynced_messages() {
+        assert_eq!(
+            message(b"\x06shello"),
+            Ok((&b""[..], Unsynced(ChatMessage(String::from("hello")))))
+        );
+    }
 
-#[test]
-fn parse_incorrect_messages() {
-    assert_eq!(message(b"\x00"), Ok((&b""[..], Empty)));
-    assert_eq!(message(b"\x01\x00"), Ok((&b""[..], Unknown)));
+    #[test]
+    fn parse_incorrect_messages() {
+        assert_eq!(message(b"\x00"), Ok((&b""[..], Empty)));
+        assert_eq!(message(b"\x01\x00"), Ok((&b""[..], Unknown)));
+
+        // garbage after correct message
+        assert_eq!(message(b"\x04La\x01\x02"), Ok((&b""[..], Unknown)));
+    }
 
-    // garbage after correct message
-    assert_eq!(message(b"\x04La\x01\x02"), Ok((&b""[..], Unknown)));
-}
+    #[test]
+    fn parse_config_messages() {
+        assert_eq!(message(b"\x01C"), Ok((&b""[..], Config(ConfigRequest))));
+    }
 
-#[test]
-fn parse_config_messages() {
-    assert_eq!(message(b"\x01C"), Ok((&b""[..], Config(ConfigRequest))));
+    #[test]
+    fn parse_test_general() {
+        assert_eq!(string_tail(b"abc"), Ok((&b""[..], String::from("abc"))));
+
+        assert_eq!(extract_message(b"\x02#"), None);
+        assert_eq!(
+            extract_message(b"\x01#"),
+            Some((2, Synced(TimeWrap, 65535)))
+        );
+    }
 }
-
-#[test]
-fn parse_test_general() {
-    assert_eq!(string_tail(b"abc"), Ok((&b""[..], String::from("abc"))));
-
-    assert_eq!(extract_message(b"\x02#"), None);
-    assert_eq!(extract_message(b"\x01#"), Some((2, Synced(TimeWrap, 65535))));
-}