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|
use super::*;
fn queue_requests(server: &mut HeadlessServer, count: usize) -> std::sync::mpsc::Receiver<String> {
let (sender, receiver) = mpsc::unbounded_channel();
server.app.api_rx = receiver;
let (respond_to, responses) = std::sync::mpsc::channel();
for index in 0..count {
sender
.send(api::ApiRequestMessage {
request: api::schema::Request {
id: index.to_string(),
method: api::schema::Method::WorkspaceList(api::schema::EmptyParams::default()),
},
respond_to: respond_to.clone(),
response_write_complete: None,
})
.unwrap();
}
responses
}
#[test]
fn external_api_batches_preserve_fifo_and_leave_work_for_the_next_turn() {
let mut server = test_headless_server();
let count = EXTERNAL_EVENT_DRAIN_LIMIT * 2 + 1;
let responses = queue_requests(&mut server, count);
let mut processed = 0;
while !server.app.api_rx.is_empty() {
server.drain_api_requests_with_shutdown_check();
let batch: Vec<_> = responses.try_iter().collect();
assert_eq!(
batch.len(),
EXTERNAL_EVENT_DRAIN_LIMIT.min(count - processed)
);
for response in batch {
let response: serde_json::Value = serde_json::from_str(&response).unwrap();
assert_eq!(response["id"], processed.to_string());
assert!(response.get("result").is_some());
processed += 1;
}
assert_eq!(server.app.api_rx.len(), count - processed);
}
assert_eq!(processed, count);
}
#[test]
fn external_server_events_yield_with_backlog_and_preserve_fifo() {
let mut server = test_headless_server();
let count = EXTERNAL_EVENT_DRAIN_LIMIT * 2 + 1;
let (sender, receiver) = mpsc::channel(count);
server.server_event_rx = receiver;
server.server_event_tx = sender.clone();
for client_id in 0..count as u64 {
sender
.try_send(ServerEvent::ClientDisconnected { client_id })
.unwrap();
}
server.drain_server_events();
assert_eq!(
server.server_event_rx.len(),
count - EXTERNAL_EVENT_DRAIN_LIMIT
);
let ServerEvent::ClientDisconnected { client_id } = server.server_event_rx.try_recv().unwrap()
else {
panic!("expected the next disconnect");
};
assert_eq!(client_id, EXTERNAL_EVENT_DRAIN_LIMIT as u64);
server.drain_server_events();
assert!(server.server_event_rx.is_empty());
}
#[test]
fn external_api_batch_stops_immediately_when_shutdown_is_requested() {
let mut server = test_headless_server();
let responses = queue_requests(&mut server, EXTERNAL_EVENT_DRAIN_LIMIT + 1);
server.should_quit.store(true, Ordering::Release);
assert!(!server.drain_api_requests_with_shutdown_check());
assert_eq!(server.app.api_rx.len(), EXTERNAL_EVENT_DRAIN_LIMIT + 1);
assert_eq!(responses.try_iter().count(), 0);
}
#[test]
fn scheduled_work_runs_between_external_api_batches() {
let mut server = test_headless_server();
let responses = queue_requests(&mut server, EXTERNAL_EVENT_DRAIN_LIMIT + 1);
let now = Instant::now();
server.app.config_diagnostic_deadline = Some(now);
server.app.state.config_diagnostic = Some("expired diagnostic".into());
server.drain_api_requests_with_shutdown_check();
assert_eq!(responses.try_iter().count(), EXTERNAL_EVENT_DRAIN_LIMIT);
assert_eq!(server.app.api_rx.len(), 1);
assert!(server.handle_scheduled_tasks_headless(now, false));
assert!(server.app.state.config_diagnostic.is_none());
assert!(server.app.config_diagnostic_deadline.is_none());
assert_eq!(server.app.api_rx.len(), 1);
}
#[tokio::test]
async fn server_loop_drains_api_backlog_and_runs_scheduled_work() {
let mut server = test_headless_server();
let (sender, receiver) = mpsc::unbounded_channel();
server.app.api_rx = receiver;
let (respond_to, responses) = std::sync::mpsc::channel();
let count = EXTERNAL_EVENT_DRAIN_LIMIT * 2 + 1;
for index in 0..=count {
// A queued stop terminates the real loop without a concurrent producer
// or a timing assertion. Earlier requests must all receive responses.
let method = if index == count {
api::schema::Method::ServerStop(api::schema::EmptyParams::default())
} else {
api::schema::Method::WorkspaceList(api::schema::EmptyParams::default())
};
sender
.send(api::ApiRequestMessage {
request: api::schema::Request {
id: index.to_string(),
method,
},
respond_to: respond_to.clone(),
response_write_complete: None,
})
.unwrap();
}
server.app.config_diagnostic_deadline = Some(Instant::now());
server.app.state.config_diagnostic = Some("expired diagnostic".into());
tokio::time::timeout(Duration::from_secs(5), server.run())
.await
.expect("queued API requests must wake the server loop")
.expect("server loop shuts down cleanly");
let responses: Vec<_> = responses.try_iter().collect();
assert_eq!(responses.len(), count + 1);
for (index, response) in responses.iter().enumerate() {
let response: serde_json::Value = serde_json::from_str(response).unwrap();
assert_eq!(response["id"], index.to_string());
assert!(response.get("result").is_some());
}
assert!(server.app.api_rx.is_empty());
assert!(server.app.state.config_diagnostic.is_none());
assert!(server.app.config_diagnostic_deadline.is_none());
assert_eq!(server.app.terminal_runtimes.len(), 0);
}
#[test]
#[ignore = "manual external API burst scheduling profile"]
fn external_api_burst_profile() {
for pane_count in [1, 15] {
let mut server = test_headless_server();
let mut workspace = crate::workspace::Workspace::test_new("api-profile");
for _ in 1..pane_count {
workspace.test_split(ratatui::layout::Direction::Horizontal);
}
server.app.state.workspaces = vec![workspace];
server.app.state.ensure_test_terminals();
for count in [64, 512, 4096] {
let mut first_samples = Vec::new();
let mut total_samples = Vec::new();
let mut first_count = 0;
for sample in 0..10 {
let responses = queue_requests(&mut server, count);
let start = Instant::now();
server.drain_api_requests_with_shutdown_check();
let first = start.elapsed();
first_count = count - server.app.api_rx.len();
while !server.app.api_rx.is_empty() {
server.drain_api_requests_with_shutdown_check();
}
let total = start.elapsed();
assert_eq!(responses.try_iter().count(), count);
if sample >= 3 {
first_samples.push(first);
total_samples.push(total);
}
}
first_samples.sort_unstable();
total_samples.sort_unstable();
println!("api-burst panes={pane_count} requests={count} first_count={first_count} first_us={:.3} total_us={:.3}",
first_samples[3].as_secs_f64() * 1e6, total_samples[3].as_secs_f64() * 1e6);
}
}
}
|
