Verify port in test. Ensures endianness is correct

Author: faern

tests/all.rs

@@ -16,10 +16,11 @@ macro_rules! t {
 #[test]
 fn smoke_build_listener() {
     let b = t!(TcpBuilder::new_v4());
-    t!(b.bind("127.0.0.1:0"));
+    t!(b.bind("127.0.0.1:6543"));
 
     let addr = t!(b.local_addr());
     assert_eq!(addr.ip(), IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)));
+    assert_eq!(addr.port(), 6543);
 
     let listener = t!(b.listen(200));