From da9563428e990244ff2145eb6a9cb453f9ef9d22 Mon Sep 17 00:00:00 2001
From: cai <cai@nbcai.cc>
Date: Wed, 12 Aug 2026 12:02:47 +0800
Subject: [PATCH] Fail closed when fixture ACK publish fails
---
src/main.rs | 711 +++++++++++++++++++++++++++++++++++++++++++++++++++++++----
1 files changed, 663 insertions(+), 48 deletions(-)
diff --git a/src/main.rs b/src/main.rs
index 94b6589..d40ca9e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -6,6 +6,7 @@
borrow::Cow,
collections::HashSet,
env, fs,
+ future::Future,
path::{Path, PathBuf},
sync::{
Arc,
@@ -63,9 +64,23 @@
const CONTROLLED_FIXTURE_ACK_TOPIC: &str = "controlled_fixture_attribute_ack";
const CONTROLLED_FIXTURE_PROTOCOL_VERSION: u64 = 1;
const CONTROLLED_FIXTURE_GENERATION: u64 = 1;
-const CONTROLLED_FIXTURE_PROBE_RECHECKS: usize = 3;
const CONTROLLED_FIXTURE_PROBE_RECHECK_DELAY: Duration = Duration::from_millis(25);
const CONTROLLED_FIXTURE_PROBE_TTL: Duration = Duration::from_millis(250);
+
+const CONTROLLED_FIXTURE_ACK_RESULTS: [&str; 4] =
+ ["observed", "rejected", "timeout", "publish_failed"];
+const CONTROLLED_FIXTURE_REJECT_REASONS: [&str; 10] = [
+ "missing_attributes",
+ "wrong_source",
+ "missing_sequence",
+ "wrong_sequence",
+ "wrong_participant",
+ "expired",
+ "duplicate_or_old_sequence",
+ "no_current_participant",
+ "ack_publish_failed",
+ "unknown",
+];
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
@@ -111,6 +126,129 @@
.iter()
.map(|byte| format!("{byte:02x}"))
.collect()
+}
+
+fn controlled_fixture_ack_classification(
+ decision: Result<(), &'static str>,
+) -> (&'static str, Option<&'static str>, bool) {
+ match decision {
+ Ok(()) => ("observed", None, true),
+ Err("timeout") => ("timeout", Some("expired"), false),
+ Err(reason) if CONTROLLED_FIXTURE_REJECT_REASONS.contains(&reason) => {
+ ("rejected", Some(reason), false)
+ }
+ Err(_) => ("rejected", Some("unknown"), false),
+ }
+}
+
+fn record_controlled_fixture_probe_event(
+ stage: &'static str,
+ call_id: &str,
+ trace_id: &str,
+ sequence: &str,
+ observed: bool,
+ ack_result: Option<&'static str>,
+ reject_reason: Option<&'static str>,
+) {
+ debug_assert!(ack_result.is_none_or(|value| CONTROLLED_FIXTURE_ACK_RESULTS.contains(&value)));
+ debug_assert!(
+ reject_reason.is_none_or(|value| CONTROLLED_FIXTURE_REJECT_REASONS.contains(&value))
+ );
+ if let Some(ack_result) = ack_result {
+ info!(
+ event = "controlled_fixture_attribute_probe",
+ stage,
+ observed,
+ ack_result,
+ reject_reason = reject_reason.unwrap_or("unknown"),
+ call_id_hash = %sha256_hex(call_id),
+ trace_id_hash = %sha256_hex(trace_id),
+ generation = CONTROLLED_FIXTURE_GENERATION,
+ sequence_hash = %sha256_hex(sequence),
+ "runtime helper controlled fixture probe state"
+ );
+ } else if let Some(reject_reason) = reject_reason {
+ info!(
+ event = "controlled_fixture_attribute_probe",
+ stage,
+ observed,
+ reject_reason,
+ call_id_hash = %sha256_hex(call_id),
+ trace_id_hash = %sha256_hex(trace_id),
+ generation = CONTROLLED_FIXTURE_GENERATION,
+ sequence_hash = %sha256_hex(sequence),
+ "runtime helper controlled fixture probe state"
+ );
+ } else {
+ info!(
+ event = "controlled_fixture_attribute_probe",
+ stage,
+ observed,
+ call_id_hash = %sha256_hex(call_id),
+ trace_id_hash = %sha256_hex(trace_id),
+ generation = CONTROLLED_FIXTURE_GENERATION,
+ sequence_hash = %sha256_hex(sequence),
+ "runtime helper controlled fixture probe state"
+ );
+ }
+}
+
+fn record_controlled_fixture_attribute_decision(
+ decision: Result<(), &'static str>,
+ call_id: &str,
+ trace_id: &str,
+ sequence: &str,
+) -> (&'static str, Option<&'static str>, bool) {
+ let classification = controlled_fixture_ack_classification(decision);
+ record_controlled_fixture_probe_event(
+ "attributes_classified",
+ call_id,
+ trace_id,
+ sequence,
+ classification.2,
+ Some(classification.0),
+ classification.1,
+ );
+ classification
+}
+
+async fn complete_controlled_fixture_ack_publish<F, E>(
+ publish: F,
+ observed: bool,
+ ack_result: &'static str,
+ reject_reason: Option<&'static str>,
+ call_id: &str,
+ trace_id: &str,
+ sequence: &str,
+ acknowledged_probe_sequences: &mut HashSet<String>,
+) -> bool
+where
+ F: Future<Output = Result<(), E>>,
+{
+ if publish.await.is_ok() {
+ record_controlled_fixture_probe_event(
+ "ack_publish_completed",
+ call_id,
+ trace_id,
+ sequence,
+ observed,
+ Some(ack_result),
+ reject_reason,
+ );
+ acknowledged_probe_sequences.insert(sequence.to_string());
+ observed
+ } else {
+ record_controlled_fixture_probe_event(
+ "ack_publish_completed",
+ call_id,
+ trace_id,
+ sequence,
+ false,
+ Some("publish_failed"),
+ Some("ack_publish_failed"),
+ );
+ false
+ }
}
fn controlled_fixture_probe(
@@ -173,8 +311,57 @@
Ok(())
}
+async fn observe_controlled_fixture_attributes<F>(
+ expires_at: Instant,
+ actual_participant: &str,
+ expected_participant: Option<&str>,
+ requested_sequence: &str,
+ mut read_attributes: F,
+) -> Result<(), &'static str>
+where
+ F: FnMut() -> std::collections::HashMap<String, String>,
+{
+ loop {
+ if Instant::now() > expires_at {
+ return Err("timeout");
+ }
+ let decision = classify_controlled_fixture_attributes(
+ actual_participant,
+ expected_participant,
+ &read_attributes(),
+ requested_sequence,
+ );
+ if decision.is_ok() || !matches!(decision, Err("missing_attributes")) {
+ return decision;
+ }
+ let Some(next_check) = Instant::now().checked_add(CONTROLLED_FIXTURE_PROBE_RECHECK_DELAY)
+ else {
+ return Err("timeout");
+ };
+ if next_check > expires_at {
+ return Err("timeout");
+ }
+ sleep(CONTROLLED_FIXTURE_PROBE_RECHECK_DELAY).await;
+ }
+}
+
fn controlled_fixture_observer_gate(pending_probe: bool, probe_result: Option<bool>) -> bool {
!pending_probe || probe_result == Some(true)
+}
+
+fn start_observer_after_controlled_fixture_probe<F>(
+ pending_probe: bool,
+ probe_result: Option<bool>,
+ spawn: F,
+) -> bool
+where
+ F: FnOnce(),
+{
+ if !controlled_fixture_observer_gate(pending_probe, probe_result) {
+ return false;
+ }
+ spawn();
+ true
}
#[tokio::main(flavor = "multi_thread")]
@@ -930,7 +1117,48 @@
user_participant_identity.as_deref(),
)
.await;
- if !controlled_fixture_observer_gate(pending_sequence.is_some(), probe_result) {
+ let observer_started = start_observer_after_controlled_fixture_probe(
+ pending_sequence.is_some(),
+ probe_result,
+ || {
+ spawn_user_audio_frame_observer(
+ track,
+ call_id.clone(),
+ trace_id.clone(),
+ participant_alias,
+ track_sid_alias,
+ simple_vad_enabled,
+ simple_vad_config.clone(),
+ vad_enabled_gate.clone(),
+ turn_bridge_config.clone(),
+ http.clone(),
+ sink.clone(),
+ user_participant_identity.clone(),
+ participant,
+ );
+ },
+ );
+ if let Some(sequence) = pending_sequence.as_deref() {
+ let (ack_result, reject_reason, observed) = match probe_result {
+ Some(true) => (Some("observed"), None, true),
+ Some(false) => (Some("rejected"), Some("unknown"), false),
+ None => (None, Some("no_current_participant"), false),
+ };
+ record_controlled_fixture_probe_event(
+ if observer_started {
+ "audio_observer_allowed"
+ } else {
+ "audio_observer_blocked"
+ },
+ &call_id,
+ &trace_id,
+ sequence,
+ observed,
+ ack_result,
+ reject_reason,
+ );
+ }
+ if !observer_started {
warn!(
call_id = %call_id,
trace_id = %trace_id,
@@ -938,21 +1166,6 @@
);
continue;
}
- spawn_user_audio_frame_observer(
- track,
- call_id.clone(),
- trace_id.clone(),
- participant_alias,
- track_sid_alias,
- simple_vad_enabled,
- simple_vad_config.clone(),
- vad_enabled_gate.clone(),
- turn_bridge_config.clone(),
- http.clone(),
- sink.clone(),
- user_participant_identity.clone(),
- participant,
- );
current_user_participant = Some(participant_for_probe);
}
RoomEvent::DataReceived {
@@ -965,6 +1178,15 @@
serde_json::from_slice::<ControlledFixtureAttributeProbe>(&payload)
{
if acknowledged_probe_sequences.contains(&probe.client_fixture_sequence) {
+ record_controlled_fixture_probe_event(
+ "data_received",
+ &call_id,
+ &trace_id,
+ &probe.client_fixture_sequence,
+ false,
+ Some("rejected"),
+ Some("duplicate_or_old_sequence"),
+ );
continue;
}
}
@@ -975,6 +1197,17 @@
&sender.identity(),
user_participant_identity.as_deref(),
);
+ if let Some(probe) = pending_probe.as_ref() {
+ record_controlled_fixture_probe_event(
+ "data_received",
+ &call_id,
+ &trace_id,
+ &probe.sequence,
+ false,
+ None,
+ None,
+ );
+ }
process_controlled_fixture_probe(
&mut pending_probe,
&mut acknowledged_probe_sequences,
@@ -1039,39 +1272,68 @@
let Some(probe) = pending_probe.take() else {
return None;
};
- if acknowledged_probe_sequences.contains(&probe.sequence) || Instant::now() > probe.expires_at {
+ if acknowledged_probe_sequences.contains(&probe.sequence) {
+ record_controlled_fixture_probe_event(
+ "attributes_classified",
+ call_id,
+ trace_id,
+ &probe.sequence,
+ false,
+ Some("rejected"),
+ Some("duplicate_or_old_sequence"),
+ );
+ return Some(false);
+ }
+ if Instant::now() > probe.expires_at {
+ record_controlled_fixture_probe_event(
+ "attributes_classified",
+ call_id,
+ trace_id,
+ &probe.sequence,
+ false,
+ Some("timeout"),
+ Some("expired"),
+ );
return Some(false);
}
let Some(participant) = participant else {
+ record_controlled_fixture_probe_event(
+ "attributes_classified",
+ call_id,
+ trace_id,
+ &probe.sequence,
+ false,
+ None,
+ Some("no_current_participant"),
+ );
*pending_probe = Some(probe);
return None;
};
if participant.identity() != probe.sender {
+ record_controlled_fixture_probe_event(
+ "attributes_classified",
+ call_id,
+ trace_id,
+ &probe.sequence,
+ false,
+ Some("rejected"),
+ Some("wrong_participant"),
+ );
return Some(false);
}
- let mut decision = Err("timeout");
- for attempt in 0..CONTROLLED_FIXTURE_PROBE_RECHECKS {
- if Instant::now() > probe.expires_at {
- break;
- }
- let attributes = participant.attributes();
- decision = classify_controlled_fixture_attributes(
- &participant.identity().to_string(),
- expected_participant,
- &attributes,
- &probe.sequence,
- );
- if decision.is_ok() || !matches!(decision, Err("missing_attributes")) {
- break;
- }
- if attempt + 1 < CONTROLLED_FIXTURE_PROBE_RECHECKS {
- sleep(CONTROLLED_FIXTURE_PROBE_RECHECK_DELAY).await;
- }
- }
- let (result, input_source_category, reject_reason) = match decision {
- Ok(()) => ("observed", Some("controlled_fixture"), None),
- Err(reason) => ("rejected", None, Some(reason)),
- };
+ let decision = observe_controlled_fixture_attributes(
+ probe.expires_at,
+ &participant.identity().to_string(),
+ expected_participant,
+ &probe.sequence,
+ || participant.attributes(),
+ )
+ .await;
+ let protocol_reject_reason = decision.err();
+ let (ack_result, reject_reason, observed) =
+ record_controlled_fixture_attribute_decision(decision, call_id, trace_id, &probe.sequence);
+ let result = if observed { "observed" } else { "rejected" };
+ let input_source_category = observed.then_some("controlled_fixture");
let ack = ControlledFixtureAttributeAck {
message_type: CONTROLLED_FIXTURE_ACK_TOPIC,
protocol_version: CONTROLLED_FIXTURE_PROTOCOL_VERSION,
@@ -1081,23 +1343,41 @@
client_fixture_sequence: probe.sequence.clone(),
result,
input_source_category,
- reject_reason,
+ reject_reason: protocol_reject_reason,
};
let payload = match serde_json::to_vec(&ack) {
Ok(payload) => payload,
Err(_) => return Some(false),
};
let local_participant = sink.room.local_participant();
+ record_controlled_fixture_probe_event(
+ "ack_publish_started",
+ call_id,
+ trace_id,
+ &probe.sequence,
+ observed,
+ Some(ack_result),
+ reject_reason,
+ );
let publish = local_participant.publish_data(DataPacket {
payload,
topic: Some(CONTROLLED_FIXTURE_ACK_TOPIC.to_string()),
reliable: true,
destination_identities: vec![probe.sender],
});
- if publish.await.is_ok() {
- acknowledged_probe_sequences.insert(probe.sequence);
- }
- Some(result == "observed")
+ Some(
+ complete_controlled_fixture_ack_publish(
+ publish,
+ observed,
+ ack_result,
+ reject_reason,
+ call_id,
+ trace_id,
+ &probe.sequence,
+ acknowledged_probe_sequences,
+ )
+ .await,
+ )
}
async fn handle_finished_turn(
@@ -4345,17 +4625,97 @@
mod tests {
use super::*;
use std::{
- collections::HashSet,
+ collections::{HashMap, HashSet},
io::{Read, Write},
net::TcpListener,
sync::{
- Arc,
+ Arc, Mutex,
atomic::{AtomicUsize, Ordering},
mpsc,
},
thread,
time::Duration,
};
+
+ #[derive(Debug)]
+ enum PreAudioOrderEvent {
+ DataReceived {
+ sender: String,
+ sequence: String,
+ },
+ TrackSubscribed {
+ participant: String,
+ attributes: HashMap<String, String>,
+ },
+ }
+
+ #[derive(Clone, Default)]
+ struct CapturedLogs(Arc<Mutex<Vec<u8>>>);
+
+ struct CapturedLogWriter(Arc<Mutex<Vec<u8>>>);
+
+ impl Write for CapturedLogWriter {
+ fn write(&mut self, bytes: &[u8]) -> std::io::Result<usize> {
+ self.0.lock().unwrap().extend_from_slice(bytes);
+ Ok(bytes.len())
+ }
+
+ fn flush(&mut self) -> std::io::Result<()> {
+ Ok(())
+ }
+ }
+
+ impl<'a> tracing_subscriber::fmt::MakeWriter<'a> for CapturedLogs {
+ type Writer = CapturedLogWriter;
+
+ fn make_writer(&'a self) -> Self::Writer {
+ CapturedLogWriter(self.0.clone())
+ }
+ }
+
+ fn drive_pre_audio_order_test_seam(events: &[PreAudioOrderEvent]) -> Vec<&'static str> {
+ let mut pending_sequence = None;
+ let mut effects = Vec::new();
+ for event in events {
+ match event {
+ PreAudioOrderEvent::DataReceived { sender, sequence } if sender == "user-1" => {
+ pending_sequence = Some(sequence.as_str());
+ }
+ PreAudioOrderEvent::TrackSubscribed {
+ participant,
+ attributes,
+ } => {
+ let pending = pending_sequence.is_some();
+ let probe_result = pending_sequence.map(|sequence| {
+ classify_controlled_fixture_attributes(
+ participant,
+ Some("user-1"),
+ attributes,
+ sequence,
+ )
+ .is_ok()
+ });
+ let mut ack_observed = false;
+ let mut observer_started = false;
+ start_observer_after_controlled_fixture_probe(pending, probe_result, || {
+ if pending && probe_result == Some(true) {
+ ack_observed = true;
+ }
+ observer_started = true;
+ });
+ if ack_observed {
+ effects.push("ack_observed");
+ }
+ if observer_started {
+ effects.push("observer_started");
+ }
+ pending_sequence = None;
+ }
+ PreAudioOrderEvent::DataReceived { .. } => {}
+ }
+ }
+ effects
+ }
#[test]
fn production_vad_session_boundary_reads_updated_attributes() {
@@ -4965,6 +5325,197 @@
}
#[test]
+ fn controlled_fixture_probe_failure_log_is_fixed_redacted_and_has_no_audio_effect() {
+ let logs = CapturedLogs::default();
+ let subscriber = tracing_subscriber::fmt()
+ .without_time()
+ .with_ansi(false)
+ .with_writer(logs.clone())
+ .finish();
+ let call_id = "private-call-value";
+ let trace_id = "private-trace-value";
+ let sequence = "private-sequence-value";
+ let mut observer_starts = 0;
+ tracing::subscriber::with_default(subscriber, || {
+ let decision = Err("wrong_source");
+ let (ack_result, reject_reason, observed) =
+ record_controlled_fixture_attribute_decision(decision, call_id, trace_id, sequence);
+ record_controlled_fixture_probe_event(
+ "audio_observer_blocked",
+ call_id,
+ trace_id,
+ sequence,
+ observed,
+ Some(ack_result),
+ reject_reason,
+ );
+ assert!(!start_observer_after_controlled_fixture_probe(
+ true,
+ Some(observed),
+ || observer_starts += 1,
+ ));
+ });
+ let output = String::from_utf8(logs.0.lock().unwrap().clone()).unwrap();
+ assert!(output.contains("ack_result=\"rejected\""));
+ assert!(output.contains("reject_reason=\"wrong_source\""));
+ assert!(output.contains("observed=false"));
+ assert!(output.contains(&sha256_hex(call_id)));
+ assert!(output.contains(&sha256_hex(trace_id)));
+ assert!(output.contains(&sha256_hex(sequence)));
+ assert!(!output.contains(call_id));
+ assert!(!output.contains(trace_id));
+ assert!(!output.contains(sequence));
+ assert_eq!(observer_starts, 0);
+ }
+
+ #[test]
+ fn controlled_fixture_probe_observed_and_failure_enums_are_stable() {
+ assert_eq!(
+ controlled_fixture_ack_classification(Ok(())),
+ ("observed", None, true)
+ );
+ assert_eq!(
+ controlled_fixture_ack_classification(Err("timeout")),
+ ("timeout", Some("expired"), false)
+ );
+ for reason in [
+ "missing_attributes",
+ "wrong_source",
+ "missing_sequence",
+ "wrong_sequence",
+ "wrong_participant",
+ ] {
+ assert_eq!(
+ controlled_fixture_ack_classification(Err(reason)),
+ ("rejected", Some(reason), false)
+ );
+ }
+ assert_eq!(
+ controlled_fixture_ack_classification(Err("unclassified")),
+ ("rejected", Some("unknown"), false)
+ );
+ }
+
+ #[tokio::test]
+ async fn production_ack_publish_failure_keeps_observer_session_and_audio_closed() {
+ let mut acknowledged = HashSet::new();
+ let probe_result = complete_controlled_fixture_ack_publish(
+ async { Err::<(), ()>(()) },
+ true,
+ "observed",
+ None,
+ "call-publish-failure",
+ "trace-publish-failure",
+ "fixture-01",
+ &mut acknowledged,
+ )
+ .await;
+ let mut observer_starts = 0;
+ let mut session_starts = 0;
+ let mut audio_starts = 0;
+ let mut speaking_starts = 0;
+ assert!(!start_observer_after_controlled_fixture_probe(
+ true,
+ Some(probe_result),
+ || {
+ observer_starts += 1;
+ session_starts += 1;
+ audio_starts += 1;
+ speaking_starts += 1;
+ },
+ ));
+ assert!(!probe_result);
+ assert!(acknowledged.is_empty());
+ assert_eq!(observer_starts, 0);
+ assert_eq!(session_starts, 0);
+ assert_eq!(audio_starts, 0);
+ assert_eq!(speaking_starts, 0);
+
+ let observed_result = complete_controlled_fixture_ack_publish(
+ async { Ok::<(), ()>(()) },
+ true,
+ "observed",
+ None,
+ "call-publish-success",
+ "trace-publish-success",
+ "fixture-02",
+ &mut acknowledged,
+ )
+ .await;
+ let mut successful_observer_starts = 0;
+ assert!(start_observer_after_controlled_fixture_probe(
+ true,
+ Some(observed_result),
+ || successful_observer_starts += 1,
+ ));
+ assert!(observed_result);
+ assert!(acknowledged.contains("fixture-02"));
+ assert_eq!(successful_observer_starts, 1);
+ }
+
+ #[tokio::test]
+ async fn production_attribute_observation_accepts_server_visibility_within_probe_ttl() {
+ let expected = HashMap::from([
+ (
+ "inputSourceCategory".to_string(),
+ "controlled_fixture".to_string(),
+ ),
+ (
+ "clientFixtureSequence".to_string(),
+ "fixture-01".to_string(),
+ ),
+ ]);
+ let mut reads = 0;
+ let result = observe_controlled_fixture_attributes(
+ Instant::now() + CONTROLLED_FIXTURE_PROBE_TTL,
+ "user-1",
+ Some("user-1"),
+ "fixture-01",
+ || {
+ reads += 1;
+ if reads <= 3 {
+ HashMap::new()
+ } else {
+ expected.clone()
+ }
+ },
+ )
+ .await;
+ assert_eq!(result, Ok(()));
+ assert_eq!(reads, 4);
+ }
+
+ #[tokio::test]
+ async fn production_attribute_observation_rejects_wrong_sequence_without_audio_effect() {
+ let attributes = HashMap::from([
+ (
+ "inputSourceCategory".to_string(),
+ "controlled_fixture".to_string(),
+ ),
+ (
+ "clientFixtureSequence".to_string(),
+ "fixture-02".to_string(),
+ ),
+ ]);
+ let result = observe_controlled_fixture_attributes(
+ Instant::now() + CONTROLLED_FIXTURE_PROBE_TTL,
+ "user-1",
+ Some("user-1"),
+ "fixture-01",
+ || attributes.clone(),
+ )
+ .await;
+ let mut observer_starts = 0;
+ assert_eq!(result, Err("wrong_sequence"));
+ assert!(!start_observer_after_controlled_fixture_probe(
+ true,
+ Some(result.is_ok()),
+ || observer_starts += 1,
+ ));
+ assert_eq!(observer_starts, 0);
+ }
+
+ #[test]
fn controlled_fixture_ack_payload_is_reliable_and_redacted() {
let ack = ControlledFixtureAttributeAck {
message_type: CONTROLLED_FIXTURE_ACK_TOPIC,
@@ -5020,4 +5571,68 @@
assert!(!controlled_fixture_observer_gate(true, Some(false)));
assert!(!controlled_fixture_observer_gate(true, None));
}
+
+ #[test]
+ fn production_event_order_probe_then_track_publishes_ack_before_observer() {
+ let attributes = HashMap::from([
+ (
+ "inputSourceCategory".to_string(),
+ "controlled_fixture".to_string(),
+ ),
+ (
+ "clientFixtureSequence".to_string(),
+ "fixture-01".to_string(),
+ ),
+ ]);
+ let effects = drive_pre_audio_order_test_seam(&[
+ PreAudioOrderEvent::DataReceived {
+ sender: "user-1".to_string(),
+ sequence: "fixture-01".to_string(),
+ },
+ PreAudioOrderEvent::TrackSubscribed {
+ participant: "user-1".to_string(),
+ attributes,
+ },
+ ]);
+ assert_eq!(effects, ["ack_observed", "observer_started"]);
+ }
+
+ #[test]
+ fn production_event_order_negative_probe_has_no_observer_or_session_effect() {
+ let mut invalid = HashMap::new();
+ invalid.insert(
+ "inputSourceCategory".to_string(),
+ "ordinary_mic".to_string(),
+ );
+ let effects = drive_pre_audio_order_test_seam(&[
+ PreAudioOrderEvent::DataReceived {
+ sender: "user-1".to_string(),
+ sequence: "fixture-01".to_string(),
+ },
+ PreAudioOrderEvent::TrackSubscribed {
+ participant: "user-1".to_string(),
+ attributes: invalid,
+ },
+ ]);
+ assert!(effects.is_empty());
+ }
+
+ #[test]
+ fn production_audio_branch_orders_probe_before_spawn_callsite() {
+ let source = include_str!("main.rs");
+ let branch = source
+ .find("RoomEvent::TrackSubscribed {\n track: RemoteTrack::Audio")
+ .expect("audio TrackSubscribed production branch");
+ let branch_source = &source[branch..];
+ let probe = branch_source
+ .find("let probe_result = process_controlled_fixture_probe")
+ .expect("probe must be processed in audio branch");
+ let spawn = branch_source
+ .find("start_observer_after_controlled_fixture_probe")
+ .expect("spawn must use shared order entry");
+ assert!(
+ probe < spawn,
+ "probe must precede shared observer spawn entry"
+ );
+ }
}
--
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