test: cover participant binding rejection

cai

2026-08-08 c8464e075cc66704c0f9210113a3b852121c5d2a

test: cover participant binding rejection

 helper-paired-manifest.json

@@ -11,8 +11,8 @@
    "lmDocRollbackCommit": "0cec0c4ffed92f277778adbbd14eea3e5aa562b6",
    "implementationBaseCommit": "afd9833f82e9c1f6d5dfe7f2250f19f1af5cdd7d",
    "implementationBaseTree": "a9af1be31c66740fefe54223e0ea0559b78aaba0",
    "candidateCommit": "cce5655f2f88e6541ba6f70cb68d183beba19ac9",
    "candidateTree": "65acfece24241a5f9fd3cc5a2e3351ed33bb641f",
    "candidateCommit": "ad9ba4c2a439c8ef464e34c19696300519e134b6",
    "candidateTree": "2a3f48f3394e4d87bf8ae59db6bef132f64c7b6a",
    "repairParent": "efc73c570bb70ba4de23afc785350629ef5016a7",
    "buildBoundary": "JENKINS_33_BUILD_ONLY_SUCCESS"
  },

 src/main.rs

@@ -737,6 +737,10 @@
    })
}

fn is_bound_user_participant(identity: &str, expected: Option<&str>) -> bool {
    expected.is_none_or(|value| identity == value)
}

async fn observe_user_audio_events(
    mut events: UnboundedReceiver<RoomEvent>,
    call_id: String,
@@ -771,10 +775,10 @@
                publication: _,
                participant,
            } => {
                if user_participant_identity
                    .as_deref()
                    .is_some_and(|expected| participant.identity().to_string() != expected)
                {
                if !is_bound_user_participant(
                    &participant.identity().to_string(),
                    user_participant_identity.as_deref(),
                ) {
                    warn!(call_id = %call_id, trace_id = %trace_id,
                        metadata_status = "wrong_participant",
                        "runtime helper ignored non-user audio participant");
@@ -4036,6 +4040,19 @@
    }

    #[test]
    fn production_observer_rejects_wrong_participant_before_vad_session() {
        assert!(!is_bound_user_participant(
            "participant-other",
            Some("participant-user")
        ));
        assert!(is_bound_user_participant(
            "participant-user",
            Some("participant-user")
        ));
        assert!(is_bound_user_participant("participant-any", None));
    }

    #[test]
    fn reply_chunk_marker_state_emits_turn_first_once_and_later_segment_first_once() {
        let mut state = ReplyChunkMarkerState::default();