Reorganize protocol test modules

2026-06-08 22:38:01 -06:00 · 2026-06-01 13:57:56 -06:00
parent 921ea838c4
commit 2d5f04a024
35 changed files with 1519 additions and 1336 deletions
@@ -0,0 +1,94 @@
+use alloc::vec;
+
+use crate::protocol::{Endpoint, EndpointError, RouteDirection};
+
+use super::super::support::{
+    assertions::{assert_hook_present, assert_hook_removed},
+    endpoints::{ENDPOINT_A, ENDPOINT_B, ENDPOINT_C, endpoint_at, single_outbound_packet},
+    packets::{echo_packet, echo_packet_with_end},
+};
+
+#[test]
+fn inbound_downward_packet_routes_to_immediate_child() {
+    let mut endpoint = endpoint_at(ENDPOINT_B, vec![ENDPOINT_A, ENDPOINT_B]);
+    let hook_id = endpoint.get_hook_id();
+    endpoint.add_connection(ENDPOINT_A, true);
+    endpoint.add_connection(ENDPOINT_C, false);
+
+    endpoint
+        .add_inbound_from(
+            ENDPOINT_A,
+            echo_packet(vec![ENDPOINT_A, ENDPOINT_B, ENDPOINT_C], hook_id),
+        )
+        .unwrap();
+
+    let packet = single_outbound_packet(&endpoint, ENDPOINT_C);
+    assert!(!packet.end_hook);
+    assert_eq!(packet.path, vec![ENDPOINT_A, ENDPOINT_B, ENDPOINT_C]);
+    assert_hook_present(&endpoint, hook_id);
+    assert_eq!(endpoint.hook_peer(hook_id), Some(ENDPOINT_C));
+    assert!(!Endpoint::route_contains(ENDPOINT_A, &endpoint.outbound));
+}
+
+#[test]
+fn outbound_downward_packet_routes_to_immediate_child() {
+    let mut endpoint = endpoint_at(ENDPOINT_A, vec![ENDPOINT_A]);
+    let hook_id = endpoint.get_hook_id();
+    endpoint.accept_hook(hook_id, ENDPOINT_B);
+    endpoint.add_connection(ENDPOINT_B, false);
+
+    endpoint
+        .add_outbound(echo_packet_with_end(
+            vec![ENDPOINT_A, ENDPOINT_B, ENDPOINT_C],
+            hook_id,
+            true,
+        ))
+        .unwrap();
+
+    let packet = single_outbound_packet(&endpoint, ENDPOINT_B);
+    assert!(packet.end_hook);
+    assert_eq!(packet.path, vec![ENDPOINT_A, ENDPOINT_B, ENDPOINT_C]);
+    assert_hook_removed(&endpoint, hook_id);
+    assert!(!Endpoint::route_contains(ENDPOINT_C, &endpoint.outbound));
+}
+
+#[test]
+fn downward_outbound_without_hook_is_allowed() {
+    let mut endpoint = endpoint_at(ENDPOINT_A, vec![ENDPOINT_A]);
+    endpoint.add_connection(ENDPOINT_B, false);
+
+    let new_hook = endpoint.get_hook_id();
+
+    endpoint
+        .add_outbound(echo_packet(vec![ENDPOINT_A, ENDPOINT_B], new_hook))
+        .unwrap();
+
+    assert_eq!(
+        Endpoint::route_get(ENDPOINT_B, &endpoint.outbound)
+            .unwrap()
+            .len(),
+        1
+    );
+    assert_hook_present(&endpoint, new_hook);
+    assert_eq!(endpoint.hook_peer(new_hook), Some(ENDPOINT_B));
+}
+
+#[test]
+fn downward_route_without_connection_is_rejected() {
+    let mut endpoint = endpoint_at(ENDPOINT_A, vec![ENDPOINT_A]);
+    let hook_id = endpoint.get_hook_id();
+
+    let error = endpoint
+        .add_outbound(echo_packet(vec![ENDPOINT_A, ENDPOINT_B], hook_id))
+        .unwrap_err();
+
+    assert!(matches!(
+        error,
+        EndpointError::MissingConnection {
+            next_hop: ENDPOINT_B,
+            direction: RouteDirection::Downward,
+        }
+    ));
+    assert_hook_removed(&endpoint, hook_id);
+    assert!(Endpoint::routes_is_empty(&endpoint.outbound));
+}