1pub use lsp_types::*;
2
3use anyhow::{anyhow, Context, Result};
4use collections::HashMap;
5use futures::{channel::oneshot, io::BufWriter, AsyncRead, AsyncWrite};
6use gpui::{executor, AsyncAppContext, Task};
7use parking_lot::Mutex;
8use postage::{barrier, prelude::Stream};
9use serde::{de::DeserializeOwned, Deserialize, Serialize};
10use serde_json::{json, value::RawValue, Value};
11use smol::{
12 channel,
13 io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufReader},
14 process,
15};
16use std::{
17 future::Future,
18 io::Write,
19 path::PathBuf,
20 str::FromStr,
21 sync::{
22 atomic::{AtomicUsize, Ordering::SeqCst},
23 Arc,
24 },
25};
26use std::{path::Path, process::Stdio};
27use util::{ResultExt, TryFutureExt};
28
29const JSON_RPC_VERSION: &'static str = "2.0";
30const CONTENT_LEN_HEADER: &'static str = "Content-Length: ";
31
32type NotificationHandler = Box<dyn Send + FnMut(Option<usize>, &str, AsyncAppContext)>;
33type ResponseHandler = Box<dyn Send + FnOnce(Result<&str, Error>)>;
34
35pub struct LanguageServer {
36 server_id: usize,
37 next_id: AtomicUsize,
38 outbound_tx: channel::Sender<Vec<u8>>,
39 name: String,
40 capabilities: ServerCapabilities,
41 notification_handlers: Arc<Mutex<HashMap<&'static str, NotificationHandler>>>,
42 response_handlers: Arc<Mutex<HashMap<usize, ResponseHandler>>>,
43 executor: Arc<executor::Background>,
44 io_tasks: Mutex<Option<(Task<Option<()>>, Task<Option<()>>)>>,
45 output_done_rx: Mutex<Option<barrier::Receiver>>,
46 root_path: PathBuf,
47}
48
49pub struct Subscription {
50 method: &'static str,
51 notification_handlers: Arc<Mutex<HashMap<&'static str, NotificationHandler>>>,
52}
53
54#[derive(Serialize, Deserialize)]
55struct Request<'a, T> {
56 jsonrpc: &'a str,
57 id: usize,
58 method: &'a str,
59 params: T,
60}
61
62#[derive(Serialize, Deserialize)]
63struct AnyResponse<'a> {
64 id: usize,
65 #[serde(default)]
66 error: Option<Error>,
67 #[serde(borrow)]
68 result: Option<&'a RawValue>,
69}
70
71#[derive(Serialize)]
72struct Response<T> {
73 id: usize,
74 result: Option<T>,
75 error: Option<Error>,
76}
77
78#[derive(Serialize, Deserialize)]
79struct Notification<'a, T> {
80 #[serde(borrow)]
81 jsonrpc: &'a str,
82 #[serde(borrow)]
83 method: &'a str,
84 params: T,
85}
86
87#[derive(Deserialize)]
88struct AnyNotification<'a> {
89 #[serde(default)]
90 id: Option<usize>,
91 #[serde(borrow)]
92 method: &'a str,
93 #[serde(borrow)]
94 params: &'a RawValue,
95}
96
97#[derive(Debug, Serialize, Deserialize)]
98struct Error {
99 message: String,
100}
101
102impl LanguageServer {
103 pub fn new(
104 server_id: usize,
105 binary_path: &Path,
106 args: &[&str],
107 root_path: &Path,
108 cx: AsyncAppContext,
109 ) -> Result<Self> {
110 let working_dir = if root_path.is_dir() {
111 root_path
112 } else {
113 root_path.parent().unwrap_or(Path::new("/"))
114 };
115 let mut server = process::Command::new(binary_path)
116 .current_dir(working_dir)
117 .args(args)
118 .stdin(Stdio::piped())
119 .stdout(Stdio::piped())
120 .stderr(Stdio::inherit())
121 .spawn()?;
122 let stdin = server.stdin.take().unwrap();
123 let stdout = server.stdout.take().unwrap();
124 let mut server =
125 Self::new_internal(server_id, stdin, stdout, root_path, cx, |notification| {
126 log::info!(
127 "unhandled notification {}:\n{}",
128 notification.method,
129 serde_json::to_string_pretty(
130 &Value::from_str(notification.params.get()).unwrap()
131 )
132 .unwrap()
133 );
134 });
135 if let Some(name) = binary_path.file_name() {
136 server.name = name.to_string_lossy().to_string();
137 }
138 Ok(server)
139 }
140
141 fn new_internal<Stdin, Stdout, F>(
142 server_id: usize,
143 stdin: Stdin,
144 stdout: Stdout,
145 root_path: &Path,
146 cx: AsyncAppContext,
147 mut on_unhandled_notification: F,
148 ) -> Self
149 where
150 Stdin: AsyncWrite + Unpin + Send + 'static,
151 Stdout: AsyncRead + Unpin + Send + 'static,
152 F: FnMut(AnyNotification) + 'static + Send,
153 {
154 let mut stdin = BufWriter::new(stdin);
155 let mut stdout = BufReader::new(stdout);
156 let (outbound_tx, outbound_rx) = channel::unbounded::<Vec<u8>>();
157 let notification_handlers =
158 Arc::new(Mutex::new(HashMap::<_, NotificationHandler>::default()));
159 let response_handlers = Arc::new(Mutex::new(HashMap::<_, ResponseHandler>::default()));
160 let input_task = cx.spawn(|cx| {
161 let notification_handlers = notification_handlers.clone();
162 let response_handlers = response_handlers.clone();
163 async move {
164 let _clear_response_handlers = ClearResponseHandlers(response_handlers.clone());
165 let mut buffer = Vec::new();
166 loop {
167 buffer.clear();
168 stdout.read_until(b'\n', &mut buffer).await?;
169 stdout.read_until(b'\n', &mut buffer).await?;
170 let message_len: usize = std::str::from_utf8(&buffer)?
171 .strip_prefix(CONTENT_LEN_HEADER)
172 .ok_or_else(|| anyhow!("invalid header"))?
173 .trim_end()
174 .parse()?;
175
176 buffer.resize(message_len, 0);
177 stdout.read_exact(&mut buffer).await?;
178 log::trace!("incoming message:{}", String::from_utf8_lossy(&buffer));
179
180 if let Ok(msg) = serde_json::from_slice::<AnyNotification>(&buffer) {
181 if let Some(handler) = notification_handlers.lock().get_mut(msg.method) {
182 handler(msg.id, msg.params.get(), cx.clone());
183 } else {
184 on_unhandled_notification(msg);
185 }
186 } else if let Ok(AnyResponse { id, error, result }) =
187 serde_json::from_slice(&buffer)
188 {
189 if let Some(handler) = response_handlers.lock().remove(&id) {
190 if let Some(error) = error {
191 handler(Err(error));
192 } else if let Some(result) = result {
193 handler(Ok(result.get()));
194 } else {
195 handler(Ok("null"));
196 }
197 }
198 } else {
199 return Err(anyhow!(
200 "failed to deserialize message:\n{}",
201 std::str::from_utf8(&buffer)?
202 ));
203 }
204
205 // Don't starve the main thread when receiving lots of messages at once.
206 smol::future::yield_now().await;
207 }
208 }
209 .log_err()
210 });
211 let (output_done_tx, output_done_rx) = barrier::channel();
212 let output_task = cx.background().spawn({
213 let response_handlers = response_handlers.clone();
214 async move {
215 let _clear_response_handlers = ClearResponseHandlers(response_handlers);
216 let mut content_len_buffer = Vec::new();
217 while let Ok(message) = outbound_rx.recv().await {
218 log::trace!("outgoing message:{}", String::from_utf8_lossy(&message));
219 content_len_buffer.clear();
220 write!(content_len_buffer, "{}", message.len()).unwrap();
221 stdin.write_all(CONTENT_LEN_HEADER.as_bytes()).await?;
222 stdin.write_all(&content_len_buffer).await?;
223 stdin.write_all("\r\n\r\n".as_bytes()).await?;
224 stdin.write_all(&message).await?;
225 stdin.flush().await?;
226 }
227 drop(output_done_tx);
228 Ok(())
229 }
230 .log_err()
231 });
232
233 Self {
234 server_id,
235 notification_handlers,
236 response_handlers,
237 name: Default::default(),
238 capabilities: Default::default(),
239 next_id: Default::default(),
240 outbound_tx,
241 executor: cx.background().clone(),
242 io_tasks: Mutex::new(Some((input_task, output_task))),
243 output_done_rx: Mutex::new(Some(output_done_rx)),
244 root_path: root_path.to_path_buf(),
245 }
246 }
247
248 pub async fn initialize(mut self, options: Option<Value>) -> Result<Arc<Self>> {
249 let root_uri = Url::from_file_path(&self.root_path).unwrap();
250 #[allow(deprecated)]
251 let params = InitializeParams {
252 process_id: Default::default(),
253 root_path: Default::default(),
254 root_uri: Some(root_uri),
255 initialization_options: options,
256 capabilities: ClientCapabilities {
257 workspace: Some(WorkspaceClientCapabilities {
258 configuration: Some(true),
259 did_change_configuration: Some(DynamicRegistrationClientCapabilities {
260 dynamic_registration: Some(true),
261 }),
262 ..Default::default()
263 }),
264 text_document: Some(TextDocumentClientCapabilities {
265 definition: Some(GotoCapability {
266 link_support: Some(true),
267 ..Default::default()
268 }),
269 code_action: Some(CodeActionClientCapabilities {
270 code_action_literal_support: Some(CodeActionLiteralSupport {
271 code_action_kind: CodeActionKindLiteralSupport {
272 value_set: vec![
273 CodeActionKind::REFACTOR.as_str().into(),
274 CodeActionKind::QUICKFIX.as_str().into(),
275 CodeActionKind::SOURCE.as_str().into(),
276 ],
277 },
278 }),
279 data_support: Some(true),
280 resolve_support: Some(CodeActionCapabilityResolveSupport {
281 properties: vec!["edit".to_string(), "command".to_string()],
282 }),
283 ..Default::default()
284 }),
285 completion: Some(CompletionClientCapabilities {
286 completion_item: Some(CompletionItemCapability {
287 snippet_support: Some(true),
288 resolve_support: Some(CompletionItemCapabilityResolveSupport {
289 properties: vec!["additionalTextEdits".to_string()],
290 }),
291 ..Default::default()
292 }),
293 ..Default::default()
294 }),
295 rename: Some(RenameClientCapabilities {
296 prepare_support: Some(true),
297 ..Default::default()
298 }),
299 hover: Some(HoverClientCapabilities {
300 content_format: Some(vec![MarkupKind::Markdown]),
301 ..Default::default()
302 }),
303 ..Default::default()
304 }),
305 experimental: Some(json!({
306 "serverStatusNotification": true,
307 })),
308 window: Some(WindowClientCapabilities {
309 work_done_progress: Some(true),
310 ..Default::default()
311 }),
312 ..Default::default()
313 },
314 trace: Default::default(),
315 workspace_folders: Default::default(),
316 client_info: Default::default(),
317 locale: Default::default(),
318 };
319
320 let response = self.request::<request::Initialize>(params).await?;
321 if let Some(info) = response.server_info {
322 self.name = info.name;
323 }
324 self.capabilities = response.capabilities;
325
326 self.notify::<notification::Initialized>(InitializedParams {})?;
327 Ok(Arc::new(self))
328 }
329
330 pub fn shutdown(&self) -> Option<impl 'static + Send + Future<Output = Option<()>>> {
331 if let Some(tasks) = self.io_tasks.lock().take() {
332 let response_handlers = self.response_handlers.clone();
333 let next_id = AtomicUsize::new(self.next_id.load(SeqCst));
334 let outbound_tx = self.outbound_tx.clone();
335 let mut output_done = self.output_done_rx.lock().take().unwrap();
336 let shutdown_request = Self::request_internal::<request::Shutdown>(
337 &next_id,
338 &response_handlers,
339 &outbound_tx,
340 (),
341 );
342 let exit = Self::notify_internal::<notification::Exit>(&outbound_tx, ());
343 outbound_tx.close();
344 Some(
345 async move {
346 log::debug!("language server shutdown started");
347 shutdown_request.await?;
348 response_handlers.lock().clear();
349 exit?;
350 output_done.recv().await;
351 log::debug!("language server shutdown finished");
352 drop(tasks);
353 Ok(())
354 }
355 .log_err(),
356 )
357 } else {
358 None
359 }
360 }
361
362 #[must_use]
363 pub fn on_notification<T, F>(&self, f: F) -> Subscription
364 where
365 T: notification::Notification,
366 F: 'static + Send + FnMut(T::Params, AsyncAppContext),
367 {
368 self.on_custom_notification(T::METHOD, f)
369 }
370
371 #[must_use]
372 pub fn on_request<T, F, Fut>(&self, f: F) -> Subscription
373 where
374 T: request::Request,
375 T::Params: 'static + Send,
376 F: 'static + Send + FnMut(T::Params, AsyncAppContext) -> Fut,
377 Fut: 'static + Future<Output = Result<T::Result>>,
378 {
379 self.on_custom_request(T::METHOD, f)
380 }
381
382 pub fn remove_request_handler<T: request::Request>(&self) {
383 self.notification_handlers.lock().remove(T::METHOD);
384 }
385
386 #[must_use]
387 pub fn on_custom_notification<Params, F>(&self, method: &'static str, mut f: F) -> Subscription
388 where
389 F: 'static + Send + FnMut(Params, AsyncAppContext),
390 Params: DeserializeOwned,
391 {
392 let prev_handler = self.notification_handlers.lock().insert(
393 method,
394 Box::new(move |_, params, cx| {
395 if let Some(params) = serde_json::from_str(params).log_err() {
396 f(params, cx);
397 }
398 }),
399 );
400 assert!(
401 prev_handler.is_none(),
402 "registered multiple handlers for the same LSP method"
403 );
404 Subscription {
405 method,
406 notification_handlers: self.notification_handlers.clone(),
407 }
408 }
409
410 #[must_use]
411 pub fn on_custom_request<Params, Res, Fut, F>(
412 &self,
413 method: &'static str,
414 mut f: F,
415 ) -> Subscription
416 where
417 F: 'static + Send + FnMut(Params, AsyncAppContext) -> Fut,
418 Fut: 'static + Future<Output = Result<Res>>,
419 Params: DeserializeOwned + Send + 'static,
420 Res: Serialize,
421 {
422 let outbound_tx = self.outbound_tx.clone();
423 let prev_handler = self.notification_handlers.lock().insert(
424 method,
425 Box::new(move |id, params, cx| {
426 if let Some(id) = id {
427 if let Some(params) = serde_json::from_str(params).log_err() {
428 let response = f(params, cx.clone());
429 cx.foreground()
430 .spawn({
431 let outbound_tx = outbound_tx.clone();
432 async move {
433 let response = match response.await {
434 Ok(result) => Response {
435 id,
436 result: Some(result),
437 error: None,
438 },
439 Err(error) => Response {
440 id,
441 result: None,
442 error: Some(Error {
443 message: error.to_string(),
444 }),
445 },
446 };
447 if let Some(response) = serde_json::to_vec(&response).log_err()
448 {
449 outbound_tx.try_send(response).ok();
450 }
451 }
452 })
453 .detach();
454 }
455 }
456 }),
457 );
458 assert!(
459 prev_handler.is_none(),
460 "registered multiple handlers for the same LSP method"
461 );
462 Subscription {
463 method,
464 notification_handlers: self.notification_handlers.clone(),
465 }
466 }
467
468 pub fn name<'a>(self: &'a Arc<Self>) -> &'a str {
469 &self.name
470 }
471
472 pub fn capabilities<'a>(self: &'a Arc<Self>) -> &'a ServerCapabilities {
473 &self.capabilities
474 }
475
476 pub fn server_id(&self) -> usize {
477 self.server_id
478 }
479
480 pub fn request<T: request::Request>(
481 &self,
482 params: T::Params,
483 ) -> impl Future<Output = Result<T::Result>>
484 where
485 T::Result: 'static + Send,
486 {
487 Self::request_internal::<T>(
488 &self.next_id,
489 &self.response_handlers,
490 &self.outbound_tx,
491 params,
492 )
493 }
494
495 fn request_internal<T: request::Request>(
496 next_id: &AtomicUsize,
497 response_handlers: &Mutex<HashMap<usize, ResponseHandler>>,
498 outbound_tx: &channel::Sender<Vec<u8>>,
499 params: T::Params,
500 ) -> impl 'static + Future<Output = Result<T::Result>>
501 where
502 T::Result: 'static + Send,
503 {
504 let id = next_id.fetch_add(1, SeqCst);
505 let message = serde_json::to_vec(&Request {
506 jsonrpc: JSON_RPC_VERSION,
507 id,
508 method: T::METHOD,
509 params,
510 })
511 .unwrap();
512
513 let send = outbound_tx
514 .try_send(message)
515 .context("failed to write to language server's stdin");
516
517 let (tx, rx) = oneshot::channel();
518 response_handlers.lock().insert(
519 id,
520 Box::new(move |result| {
521 let response = match result {
522 Ok(response) => {
523 serde_json::from_str(response).context("failed to deserialize response")
524 }
525 Err(error) => Err(anyhow!("{}", error.message)),
526 };
527 let _ = tx.send(response);
528 }),
529 );
530
531 async move {
532 send?;
533 rx.await?
534 }
535 }
536
537 pub fn notify<T: notification::Notification>(&self, params: T::Params) -> Result<()> {
538 Self::notify_internal::<T>(&self.outbound_tx, params)
539 }
540
541 fn notify_internal<T: notification::Notification>(
542 outbound_tx: &channel::Sender<Vec<u8>>,
543 params: T::Params,
544 ) -> Result<()> {
545 let message = serde_json::to_vec(&Notification {
546 jsonrpc: JSON_RPC_VERSION,
547 method: T::METHOD,
548 params,
549 })
550 .unwrap();
551 outbound_tx.try_send(message)?;
552 Ok(())
553 }
554}
555
556impl Drop for LanguageServer {
557 fn drop(&mut self) {
558 if let Some(shutdown) = self.shutdown() {
559 self.executor.spawn(shutdown).detach();
560 }
561 }
562}
563
564impl Subscription {
565 pub fn detach(mut self) {
566 self.method = "";
567 }
568}
569
570impl Drop for Subscription {
571 fn drop(&mut self) {
572 self.notification_handlers.lock().remove(self.method);
573 }
574}
575
576#[cfg(any(test, feature = "test-support"))]
577#[derive(Clone)]
578pub struct FakeLanguageServer {
579 pub server: Arc<LanguageServer>,
580 notifications_rx: channel::Receiver<(String, String)>,
581}
582
583#[cfg(any(test, feature = "test-support"))]
584impl LanguageServer {
585 pub fn full_capabilities() -> ServerCapabilities {
586 ServerCapabilities {
587 document_highlight_provider: Some(OneOf::Left(true)),
588 code_action_provider: Some(CodeActionProviderCapability::Simple(true)),
589 document_formatting_provider: Some(OneOf::Left(true)),
590 document_range_formatting_provider: Some(OneOf::Left(true)),
591 ..Default::default()
592 }
593 }
594
595 pub fn fake(
596 name: String,
597 capabilities: ServerCapabilities,
598 cx: AsyncAppContext,
599 ) -> (Self, FakeLanguageServer) {
600 let (stdin_writer, stdin_reader) = async_pipe::pipe();
601 let (stdout_writer, stdout_reader) = async_pipe::pipe();
602 let (notifications_tx, notifications_rx) = channel::unbounded();
603
604 let server = Self::new_internal(
605 0,
606 stdin_writer,
607 stdout_reader,
608 Path::new("/"),
609 cx.clone(),
610 |_| {},
611 );
612 let fake = FakeLanguageServer {
613 server: Arc::new(Self::new_internal(
614 0,
615 stdout_writer,
616 stdin_reader,
617 Path::new("/"),
618 cx.clone(),
619 move |msg| {
620 notifications_tx
621 .try_send((msg.method.to_string(), msg.params.get().to_string()))
622 .ok();
623 },
624 )),
625 notifications_rx,
626 };
627 fake.handle_request::<request::Initialize, _, _>({
628 let capabilities = capabilities.clone();
629 move |_, _| {
630 let capabilities = capabilities.clone();
631 let name = name.clone();
632 async move {
633 Ok(InitializeResult {
634 capabilities,
635 server_info: Some(ServerInfo {
636 name,
637 ..Default::default()
638 }),
639 ..Default::default()
640 })
641 }
642 }
643 });
644
645 (server, fake)
646 }
647}
648
649#[cfg(any(test, feature = "test-support"))]
650impl FakeLanguageServer {
651 pub fn notify<T: notification::Notification>(&self, params: T::Params) {
652 self.server.notify::<T>(params).ok();
653 }
654
655 pub async fn receive_notification<T: notification::Notification>(&mut self) -> T::Params {
656 self.try_receive_notification::<T>().await.unwrap()
657 }
658
659 pub async fn try_receive_notification<T: notification::Notification>(
660 &mut self,
661 ) -> Option<T::Params> {
662 use futures::StreamExt as _;
663
664 loop {
665 let (method, params) = self.notifications_rx.next().await?;
666 if &method == T::METHOD {
667 return Some(serde_json::from_str::<T::Params>(¶ms).unwrap());
668 } else {
669 log::info!("skipping message in fake language server {:?}", params);
670 }
671 }
672 }
673
674 pub fn handle_request<T, F, Fut>(
675 &self,
676 mut handler: F,
677 ) -> futures::channel::mpsc::UnboundedReceiver<()>
678 where
679 T: 'static + request::Request,
680 T::Params: 'static + Send,
681 F: 'static + Send + FnMut(T::Params, gpui::AsyncAppContext) -> Fut,
682 Fut: 'static + Send + Future<Output = Result<T::Result>>,
683 {
684 let (responded_tx, responded_rx) = futures::channel::mpsc::unbounded();
685 self.server.remove_request_handler::<T>();
686 self.server
687 .on_request::<T, _, _>(move |params, cx| {
688 let result = handler(params, cx.clone());
689 let responded_tx = responded_tx.clone();
690 async move {
691 cx.background().simulate_random_delay().await;
692 let result = result.await;
693 responded_tx.unbounded_send(()).ok();
694 result
695 }
696 })
697 .detach();
698 responded_rx
699 }
700
701 pub fn remove_request_handler<T>(&mut self)
702 where
703 T: 'static + request::Request,
704 {
705 self.server.remove_request_handler::<T>();
706 }
707
708 pub async fn start_progress(&mut self, token: impl Into<String>) {
709 self.notify::<notification::Progress>(ProgressParams {
710 token: NumberOrString::String(token.into()),
711 value: ProgressParamsValue::WorkDone(WorkDoneProgress::Begin(Default::default())),
712 });
713 }
714
715 pub async fn end_progress(&mut self, token: impl Into<String>) {
716 self.notify::<notification::Progress>(ProgressParams {
717 token: NumberOrString::String(token.into()),
718 value: ProgressParamsValue::WorkDone(WorkDoneProgress::End(Default::default())),
719 });
720 }
721}
722
723struct ClearResponseHandlers(Arc<Mutex<HashMap<usize, ResponseHandler>>>);
724
725impl Drop for ClearResponseHandlers {
726 fn drop(&mut self) {
727 self.0.lock().clear();
728 }
729}
730
731#[cfg(test)]
732mod tests {
733 use super::*;
734 use gpui::TestAppContext;
735
736 #[ctor::ctor]
737 fn init_logger() {
738 if std::env::var("RUST_LOG").is_ok() {
739 env_logger::init();
740 }
741 }
742
743 #[gpui::test]
744 async fn test_fake(cx: &mut TestAppContext) {
745 let (server, mut fake) =
746 LanguageServer::fake("the-lsp".to_string(), Default::default(), cx.to_async());
747
748 let (message_tx, message_rx) = channel::unbounded();
749 let (diagnostics_tx, diagnostics_rx) = channel::unbounded();
750 server
751 .on_notification::<notification::ShowMessage, _>(move |params, _| {
752 message_tx.try_send(params).unwrap()
753 })
754 .detach();
755 server
756 .on_notification::<notification::PublishDiagnostics, _>(move |params, _| {
757 diagnostics_tx.try_send(params).unwrap()
758 })
759 .detach();
760
761 let server = server.initialize(None).await.unwrap();
762 server
763 .notify::<notification::DidOpenTextDocument>(DidOpenTextDocumentParams {
764 text_document: TextDocumentItem::new(
765 Url::from_str("file://a/b").unwrap(),
766 "rust".to_string(),
767 0,
768 "".to_string(),
769 ),
770 })
771 .unwrap();
772 assert_eq!(
773 fake.receive_notification::<notification::DidOpenTextDocument>()
774 .await
775 .text_document
776 .uri
777 .as_str(),
778 "file://a/b"
779 );
780
781 fake.notify::<notification::ShowMessage>(ShowMessageParams {
782 typ: MessageType::ERROR,
783 message: "ok".to_string(),
784 });
785 fake.notify::<notification::PublishDiagnostics>(PublishDiagnosticsParams {
786 uri: Url::from_str("file://b/c").unwrap(),
787 version: Some(5),
788 diagnostics: vec![],
789 });
790 assert_eq!(message_rx.recv().await.unwrap().message, "ok");
791 assert_eq!(
792 diagnostics_rx.recv().await.unwrap().uri.as_str(),
793 "file://b/c"
794 );
795
796 fake.handle_request::<request::Shutdown, _, _>(|_, _| async move { Ok(()) });
797
798 drop(server);
799 fake.receive_notification::<notification::Exit>().await;
800 }
801}