rust-lightning/fuzz/fuzz_targets/msg_targets/utils.rs

#![macro_use]

#[macro_export]
macro_rules! test_msg {
	($MsgType: path, $data: ident) => {
		{
			use lightning::util::ser::{Writer, Reader, Writeable, Readable};
			let mut r = Reader::new(::std::io::Cursor::new($data));
			if let Ok(msg) = <$MsgType as Readable<::std::io::Cursor<&[u8]>>>::read(&mut r) {
				let p = r.get_ref().position() as usize;
				let mut w = Writer::new(::std::io::Cursor::new(vec![]));
				msg.write(&mut w).unwrap();

				let buf = w.into_inner().into_inner();
				assert_eq!(buf.len(), p);
				assert_eq!(&r.into_inner().into_inner()[..p], &buf[..p]);
			}
		}
	}
}

#[macro_export]
macro_rules! test_msg_simple {
	($MsgType: path, $data: ident) => {
		{
			use lightning::util::ser::{Writer, Reader, Writeable, Readable};
			let mut r = Reader::new(::std::io::Cursor::new($data));
			if let Ok(msg) = <$MsgType as Readable<::std::io::Cursor<&[u8]>>>::read(&mut r) {
				msg.write(&mut Writer::new(::std::io::Cursor::new(vec![]))).unwrap();
			}
		}
	}
}

#[macro_export]
macro_rules! test_msg_exact {
	($MsgType: path, $data: ident) => {
		{
			use lightning::util::ser::{Writer, Reader, Writeable, Readable};
			let mut r = Reader::new(::std::io::Cursor::new($data));
			if let Ok(msg) = <$MsgType as Readable<::std::io::Cursor<&[u8]>>>::read(&mut r) {
				let mut w = Writer::new(::std::io::Cursor::new(vec![]));
				msg.write(&mut w).unwrap();

				let buf = w.into_inner().into_inner();
				assert_eq!(&r.into_inner().into_inner()[..], &buf[..]);
			}
		}
	}
}

#[macro_export]
macro_rules! test_msg_hole {
	($MsgType: path, $data: ident, $hole: expr, $hole_len: expr) => {
		{
			use lightning::util::ser::{Writer, Reader, Writeable, Readable};
			let mut r = Reader::new(::std::io::Cursor::new($data));
			if let Ok(msg) = <$MsgType as Readable<::std::io::Cursor<&[u8]>>>::read(&mut r) {
				let mut w = Writer::new(::std::io::Cursor::new(vec![]));
				msg.write(&mut w).unwrap();
				let p = w.get_ref().position() as usize;

				let buf = w.into_inner().into_inner();
				assert_eq!(buf.len(),p);
				assert_eq!(&r.get_ref().get_ref()[..$hole], &buf[..$hole]);
				assert_eq!(&r.get_ref().get_ref()[$hole+$hole_len..p], &buf[$hole+$hole_len..]);
			}
		}
	}
}