add fuzzer

fuzz/Cargo.toml

@@ -17,3 +17,10 @@ path = "fuzz_targets/parser.rs"
 test = false
 doc = false
 bench = false
+
+[[bin]]
+name = "parser_to_bytes"
+path = "fuzz_targets/parser_to_bytes.rs"
+test = false
+doc = false
+bench = false

fuzz/fuzz_targets/parser.rs

@@ -1,9 +1,14 @@
 #![no_main]
 
 use libfuzzer_sys::fuzz_target;
-use zns::{parser::FromBytes, reader::Reader, structs::Message};
+use zns::{
+    parser::{FromBytes},
+    reader::Reader,
+    structs::Message,
+};
 
 fuzz_target!(|data: &[u8]| {
     let mut reader = Reader::new(data);
     let _ = Message::from_bytes(&mut reader);
 });
+

fuzz/fuzz_targets/parser_to_bytes.rs

@@ -0,0 +1,8 @@
+#![no_main]
+
+use libfuzzer_sys::fuzz_target;
+use zns::{parser::ToBytes, structs::Message};
+
+fuzz_target!(|message: Message| {
+    let _ = Message::to_bytes(message);
+});