Add unit test for rules containing macros

Author: lucic71

tests/unit/ipproto_macros.cpp

@@ -0,0 +1,8 @@
+#include <netinet/in.h>
+
+int main() {
+  int tcp = IPPROTO_TCP;
+  int udp = IPPROTO_UDP;
+  int ip = IPPROTO_IP;
+  return tcp + udp + ip;
+}

tests/unit/out/refcount/ipproto_macros.rs

@@ -0,0 +1,17 @@
+extern crate libcc2rs;
+use libcc2rs::*;
+use std::cell::RefCell;
+use std::collections::BTreeMap;
+use std::io::prelude::*;
+use std::io::{Read, Seek, Write};
+use std::os::fd::AsFd;
+use std::rc::{Rc, Weak};
+pub fn main() {
+    std::process::exit(main_0());
+}
+fn main_0() -> i32 {
+    let tcp: Value<i32> = Rc::new(RefCell::new((libc::IPPROTO_TCP as i32)));
+    let udp: Value<i32> = Rc::new(RefCell::new((libc::IPPROTO_UDP as i32)));
+    let ip: Value<i32> = Rc::new(RefCell::new((libc::IPPROTO_IP as i32)));
+    return (((*tcp.borrow()) + (*udp.borrow())) + (*ip.borrow()));
+}

tests/unit/out/unsafe/ipproto_macros.rs

@@ -0,0 +1,19 @@
+extern crate libc;
+use libc::*;
+extern crate libcc2rs;
+use libcc2rs::*;
+use std::collections::BTreeMap;
+use std::io::{Read, Seek, Write};
+use std::os::fd::{AsFd, FromRawFd, IntoRawFd};
+use std::rc::Rc;
+pub fn main() {
+    unsafe {
+        std::process::exit(main_0() as i32);
+    }
+}
+unsafe fn main_0() -> i32 {
+    let mut tcp: i32 = (libc::IPPROTO_TCP as i32);
+    let mut udp: i32 = (libc::IPPROTO_UDP as i32);
+    let mut ip: i32 = (libc::IPPROTO_IP as i32);
+    return (((tcp) + (udp)) + (ip));
+}