From 06d4a0d3856753572a8f026108cc6c003cb00e24 Mon Sep 17 00:00:00 2001
From: cai <cai@nbcai.cc>
Date: Sat, 08 Aug 2026 19:07:22 +0800
Subject: [PATCH] test: drive VAD into realtime session boundary

---
 src/main.rs |  147 ++++++++++++++++++++++++++++++++++++++++--------
 1 files changed, 122 insertions(+), 25 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 9b08934..4ab9a13 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -3046,36 +3046,16 @@
                     let is_in_speech = vad.in_speech;
 
                     if !was_in_speech && is_in_speech {
-                        let turn_id = format!("turn-{:04}", vad.turn_index);
-                        match RealtimeAsrUpload::start_with_participant_attributes(
+                        start_realtime_session_for_new_speech(
                             http.clone(),
                             turn_bridge_config.realtime_asr_config(),
                             &call_id,
                             &trace_id,
-                            &turn_id,
-                            &vad.speech_samples,
+                            vad,
                             || participant.attributes(),
-                        ) {
-                            Ok(upload) => {
-                                info!(
-                                    call_id = %call_id,
-                                    trace_id = %trace_id,
-                                    turn_id = %turn_id,
-                                    "runtime helper asr_realtime_session_started"
-                                );
-                                realtime_asr_upload = Some(upload);
-                            }
-                            Err(error) if turn_bridge_config.asr_realtime_enabled => {
-                                warn!(
-                                    call_id = %call_id,
-                                    trace_id = %trace_id,
-                                    turn_id = %turn_id,
-                                    error = %safe_error(&error.to_string()),
-                                    "runtime helper asr_realtime_start_failed_fallback"
-                                );
-                            }
-                            Err(_) => {}
-                        }
+                            &mut realtime_asr_upload,
+                            turn_bridge_config.asr_realtime_enabled,
+                        );
                     } else if was_in_speech {
                         let push_failed = realtime_asr_upload
                             .as_mut()
@@ -3193,6 +3173,40 @@
             "runtime helper user_audio_stream_ended"
         );
     })
+}
+
+fn start_realtime_session_for_new_speech(
+    http: Client,
+    config: RealtimeAsrConfig,
+    call_id: &str,
+    trace_id: &str,
+    vad: &SimpleVad,
+    read_attributes: impl FnOnce() -> std::collections::HashMap<String, String>,
+    upload_slot: &mut Option<RealtimeAsrUpload>,
+    realtime_enabled: bool,
+) {
+    let turn_id = format!("turn-{:04}", vad.turn_index);
+    match RealtimeAsrUpload::start_with_participant_attributes(
+        http,
+        config,
+        call_id,
+        trace_id,
+        &turn_id,
+        &vad.speech_samples,
+        read_attributes,
+    ) {
+        Ok(upload) => {
+            info!(call_id = %call_id, trace_id = %trace_id, turn_id = %turn_id,
+                "runtime helper asr_realtime_session_started");
+            *upload_slot = Some(upload);
+        }
+        Err(error) if realtime_enabled => {
+            warn!(call_id = %call_id, trace_id = %trace_id, turn_id = %turn_id,
+                error = %safe_error(&error.to_string()),
+                "runtime helper asr_realtime_start_failed_fallback");
+        }
+        Err(_) => {}
+    }
 }
 
 struct DrainedUserAudioFrame {
@@ -4052,6 +4066,89 @@
         assert!(is_bound_user_participant("participant-any", None));
     }
 
+    #[tokio::test]
+    async fn production_observer_vad_to_session_entry_reads_each_updated_attribute() {
+        let mut vad = SimpleVad::new(SimpleVadConfig {
+            rms_threshold: 0.001,
+            peak_threshold: 0.01,
+            start_frames: 1,
+            end_silence_ms: 100,
+            min_speech_ms: 1,
+            max_turn_ms: 1_000,
+            initial_ignore_ms: 0,
+        });
+        let frame_data = vec![1_000i16; 160];
+        let frame = AudioFrame {
+            data: frame_data.as_slice().into(),
+            sample_rate: 16_000,
+            num_channels: 1,
+            samples_per_channel: 160,
+        };
+        let mut attrs = std::collections::HashMap::from([
+            (
+                "inputSourceCategory".to_string(),
+                "controlled_fixture".to_string(),
+            ),
+            (
+                "clientFixtureSequence".to_string(),
+                "fixture-01".to_string(),
+            ),
+        ]);
+        let mut upload = None;
+        let was = vad.in_speech;
+        vad.observe_frame(
+            "call-001",
+            "trace-001",
+            "participant",
+            "track",
+            1,
+            1_000,
+            &frame,
+        );
+        assert!(!was && vad.in_speech);
+        start_realtime_session_for_new_speech(
+            Client::new(),
+            RealtimeAsrConfig {
+                enabled: true,
+                url: Some("http://127.0.0.1:9".to_string()),
+                runtime_token: Some("test".to_string()),
+                runtime_session_nonce: Some("test".to_string()),
+                chunk_duration_ms: 200,
+            },
+            "call-001",
+            "trace-001",
+            &vad,
+            || attrs.clone(),
+            &mut upload,
+            true,
+        );
+        assert!(upload.is_some());
+        upload.take().unwrap().cancel("test").await;
+        vad.reset_current_turn();
+        attrs.insert(
+            "clientFixtureSequence".to_string(),
+            "fixture-02".to_string(),
+        );
+        let was = vad.in_speech;
+        vad.observe_frame(
+            "call-001",
+            "trace-001",
+            "participant",
+            "track",
+            2,
+            2_000,
+            &frame,
+        );
+        assert!(!was && vad.in_speech);
+        assert_eq!(
+            "fixture-02",
+            AudioIngressMetadata::from_participant(&attrs)
+                .expect("valid attributes")
+                .expect("bound")
+                .client_fixture_sequence
+        );
+    }
+
     #[test]
     fn reply_chunk_marker_state_emits_turn_first_once_and_later_segment_first_once() {
         let mut state = ReplyChunkMarkerState::default();

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