test(net): added ipv6 test_dispatch_icmp_probe_no_payload

src/tracing/net/ipv6.rs

@@ -434,8 +434,55 @@ mod tests {
     use crate::mocket_recv_from;
     use crate::tracing::error::IoResult;
     use crate::tracing::net::socket::MockSocket;
+    use crate::tracing::{Port, Round, TimeToLive};
+    use mockall::predicate;
     use std::str::FromStr;
 
+    // Test dispatching an IPv6/ICMP probe.
+    #[test]
+    fn test_dispatch_icmp_probe_no_payload() -> anyhow::Result<()> {
+        let probe = Probe::new(
+            Sequence(33000),
+            TraceId(1234),
+            Port(0),
+            Port(0),
+            TimeToLive(10),
+            Round(0),
+            SystemTime::now(),
+        );
+        let src_addr = Ipv6Addr::from_str("fd7a:115c:a1e0:ab12:4843:cd96:6263:82a")?;
+        let dest_addr = Ipv6Addr::from_str("2a00:1450:4009:815::200e")?;
+        let packet_size = PacketSize(8);
+        let payload_pattern = PayloadPattern(0x00);
+        let expected_send_to_buf = hex_literal::hex!("80 00 77 54 04 d2 80 e8");
+        let expected_send_to_addr = SocketAddr::new(IpAddr::V6(dest_addr), 0);
+
+        let mut mocket = MockSocket::new();
+        mocket
+            .expect_send_to()
+            .with(
+                predicate::eq(expected_send_to_buf),
+                predicate::eq(expected_send_to_addr),
+            )
+            .times(1)
+            .returning(|_, _| Ok(()));
+        mocket
+            .expect_set_unicast_hops_v6()
+            .times(1)
+            .with(predicate::eq(10))
+            .returning(|_| Ok(()));
+
+        dispatch_icmp_probe(
+            &mut mocket,
+            probe,
+            src_addr,
+            dest_addr,
+            packet_size,
+            payload_pattern,
+        )?;
+        Ok(())
+    }
+
     // This ICMPv6 packet has code 1 ("Fragment reassembly time exceeded")
     // and must be ignored.
     //