1mod mcp_server;
2pub mod tools;
3
4use collections::HashMap;
5use context_server::listener::McpServerTool;
6use project::Project;
7use settings::SettingsStore;
8use smol::process::Child;
9use std::cell::RefCell;
10use std::fmt::Display;
11use std::path::Path;
12use std::rc::Rc;
13use uuid::Uuid;
14
15use agent_client_protocol as acp;
16use anyhow::{Result, anyhow};
17use futures::channel::oneshot;
18use futures::{AsyncBufReadExt, AsyncWriteExt};
19use futures::{
20 AsyncRead, AsyncWrite, FutureExt, StreamExt,
21 channel::mpsc::{self, UnboundedReceiver, UnboundedSender},
22 io::BufReader,
23 select_biased,
24};
25use gpui::{App, AppContext, AsyncApp, Entity, Task, WeakEntity};
26use serde::{Deserialize, Serialize};
27use util::ResultExt;
28
29use crate::claude::mcp_server::{ClaudeZedMcpServer, McpConfig};
30use crate::claude::tools::ClaudeTool;
31use crate::{AgentServer, AgentServerCommand, AllAgentServersSettings};
32use acp_thread::{AcpThread, AgentConnection};
33
34#[derive(Clone)]
35pub struct ClaudeCode;
36
37impl AgentServer for ClaudeCode {
38 fn name(&self) -> &'static str {
39 "Claude Code"
40 }
41
42 fn empty_state_headline(&self) -> &'static str {
43 self.name()
44 }
45
46 fn empty_state_message(&self) -> &'static str {
47 "How can I help you today?"
48 }
49
50 fn logo(&self) -> ui::IconName {
51 ui::IconName::AiClaude
52 }
53
54 fn connect(
55 &self,
56 _root_dir: &Path,
57 _project: &Entity<Project>,
58 _cx: &mut App,
59 ) -> Task<Result<Rc<dyn AgentConnection>>> {
60 let connection = ClaudeAgentConnection {
61 sessions: Default::default(),
62 };
63
64 Task::ready(Ok(Rc::new(connection) as _))
65 }
66}
67
68struct ClaudeAgentConnection {
69 sessions: Rc<RefCell<HashMap<acp::SessionId, ClaudeAgentSession>>>,
70}
71
72impl AgentConnection for ClaudeAgentConnection {
73 fn name(&self) -> &'static str {
74 ClaudeCode.name()
75 }
76
77 fn new_thread(
78 self: Rc<Self>,
79 project: Entity<Project>,
80 cwd: &Path,
81 cx: &mut AsyncApp,
82 ) -> Task<Result<Entity<AcpThread>>> {
83 let cwd = cwd.to_owned();
84 cx.spawn(async move |cx| {
85 let (mut thread_tx, thread_rx) = watch::channel(WeakEntity::new_invalid());
86 let permission_mcp_server = ClaudeZedMcpServer::new(thread_rx.clone(), cx).await?;
87
88 let mut mcp_servers = HashMap::default();
89 mcp_servers.insert(
90 mcp_server::SERVER_NAME.to_string(),
91 permission_mcp_server.server_config()?,
92 );
93 let mcp_config = McpConfig { mcp_servers };
94
95 let mcp_config_file = tempfile::NamedTempFile::new()?;
96 let (mcp_config_file, mcp_config_path) = mcp_config_file.into_parts();
97
98 let mut mcp_config_file = smol::fs::File::from(mcp_config_file);
99 mcp_config_file
100 .write_all(serde_json::to_string(&mcp_config)?.as_bytes())
101 .await?;
102 mcp_config_file.flush().await?;
103
104 let settings = cx.read_global(|settings: &SettingsStore, _| {
105 settings.get::<AllAgentServersSettings>(None).claude.clone()
106 })?;
107
108 let Some(command) =
109 AgentServerCommand::resolve("claude", &[], settings, &project, cx).await
110 else {
111 anyhow::bail!("Failed to find claude binary");
112 };
113
114 let (incoming_message_tx, mut incoming_message_rx) = mpsc::unbounded();
115 let (outgoing_tx, outgoing_rx) = mpsc::unbounded();
116
117 let session_id = acp::SessionId(Uuid::new_v4().to_string().into());
118
119 log::trace!("Starting session with id: {}", session_id);
120
121 cx.background_spawn({
122 let session_id = session_id.clone();
123 async move {
124 let mut outgoing_rx = Some(outgoing_rx);
125
126 let mut child = spawn_claude(
127 &command,
128 ClaudeSessionMode::Start,
129 session_id.clone(),
130 &mcp_config_path,
131 &cwd,
132 )
133 .await?;
134
135 let pid = child.id();
136 log::trace!("Spawned (pid: {})", pid);
137
138 ClaudeAgentSession::handle_io(
139 outgoing_rx.take().unwrap(),
140 incoming_message_tx.clone(),
141 child.stdin.take().unwrap(),
142 child.stdout.take().unwrap(),
143 )
144 .await?;
145
146 log::trace!("Stopped (pid: {})", pid);
147
148 drop(mcp_config_path);
149 anyhow::Ok(())
150 }
151 })
152 .detach();
153
154 let end_turn_tx = Rc::new(RefCell::new(None));
155 let handler_task = cx.spawn({
156 let end_turn_tx = end_turn_tx.clone();
157 let thread_rx = thread_rx.clone();
158 async move |cx| {
159 while let Some(message) = incoming_message_rx.next().await {
160 ClaudeAgentSession::handle_message(
161 thread_rx.clone(),
162 message,
163 end_turn_tx.clone(),
164 cx,
165 )
166 .await
167 }
168 }
169 });
170
171 let thread =
172 cx.new(|cx| AcpThread::new(self.clone(), project, session_id.clone(), cx))?;
173
174 thread_tx.send(thread.downgrade())?;
175
176 let session = ClaudeAgentSession {
177 outgoing_tx,
178 end_turn_tx,
179 _handler_task: handler_task,
180 _mcp_server: Some(permission_mcp_server),
181 };
182
183 self.sessions.borrow_mut().insert(session_id, session);
184
185 Ok(thread)
186 })
187 }
188
189 fn authenticate(&self, _cx: &mut App) -> Task<Result<()>> {
190 Task::ready(Err(anyhow!("Authentication not supported")))
191 }
192
193 fn prompt(&self, params: acp::PromptArguments, cx: &mut App) -> Task<Result<()>> {
194 let sessions = self.sessions.borrow();
195 let Some(session) = sessions.get(¶ms.session_id) else {
196 return Task::ready(Err(anyhow!(
197 "Attempted to send message to nonexistent session {}",
198 params.session_id
199 )));
200 };
201
202 let (tx, rx) = oneshot::channel();
203 session.end_turn_tx.borrow_mut().replace(tx);
204
205 let mut content = String::new();
206 for chunk in params.prompt {
207 match chunk {
208 acp::ContentBlock::Text(text_content) => {
209 content.push_str(&text_content.text);
210 }
211 acp::ContentBlock::ResourceLink(resource_link) => {
212 content.push_str(&format!("@{}", resource_link.uri));
213 }
214 acp::ContentBlock::Audio(_)
215 | acp::ContentBlock::Image(_)
216 | acp::ContentBlock::Resource(_) => {
217 // TODO
218 }
219 }
220 }
221
222 if let Err(err) = session.outgoing_tx.unbounded_send(SdkMessage::User {
223 message: Message {
224 role: Role::User,
225 content: Content::UntaggedText(content),
226 id: None,
227 model: None,
228 stop_reason: None,
229 stop_sequence: None,
230 usage: None,
231 },
232 session_id: Some(params.session_id.to_string()),
233 }) {
234 return Task::ready(Err(anyhow!(err)));
235 }
236
237 cx.foreground_executor().spawn(async move {
238 rx.await??;
239 Ok(())
240 })
241 }
242
243 fn cancel(&self, session_id: &acp::SessionId, _cx: &mut App) {
244 let sessions = self.sessions.borrow();
245 let Some(session) = sessions.get(&session_id) else {
246 log::warn!("Attempted to cancel nonexistent session {}", session_id);
247 return;
248 };
249
250 session
251 .outgoing_tx
252 .unbounded_send(SdkMessage::new_interrupt_message())
253 .log_err();
254 }
255}
256
257#[derive(Clone, Copy)]
258enum ClaudeSessionMode {
259 Start,
260 #[expect(dead_code)]
261 Resume,
262}
263
264async fn spawn_claude(
265 command: &AgentServerCommand,
266 mode: ClaudeSessionMode,
267 session_id: acp::SessionId,
268 mcp_config_path: &Path,
269 root_dir: &Path,
270) -> Result<Child> {
271 let child = util::command::new_smol_command(&command.path)
272 .args([
273 "--input-format",
274 "stream-json",
275 "--output-format",
276 "stream-json",
277 "--print",
278 "--verbose",
279 "--mcp-config",
280 mcp_config_path.to_string_lossy().as_ref(),
281 "--permission-prompt-tool",
282 &format!(
283 "mcp__{}__{}",
284 mcp_server::SERVER_NAME,
285 mcp_server::PermissionTool::NAME,
286 ),
287 "--allowedTools",
288 &format!(
289 "mcp__{}__{},mcp__{}__{}",
290 mcp_server::SERVER_NAME,
291 mcp_server::EditTool::NAME,
292 mcp_server::SERVER_NAME,
293 mcp_server::ReadTool::NAME
294 ),
295 "--disallowedTools",
296 "Read,Edit",
297 ])
298 .args(match mode {
299 ClaudeSessionMode::Start => ["--session-id".to_string(), session_id.to_string()],
300 ClaudeSessionMode::Resume => ["--resume".to_string(), session_id.to_string()],
301 })
302 .args(command.args.iter().map(|arg| arg.as_str()))
303 .current_dir(root_dir)
304 .stdin(std::process::Stdio::piped())
305 .stdout(std::process::Stdio::piped())
306 .stderr(std::process::Stdio::inherit())
307 .kill_on_drop(true)
308 .spawn()?;
309
310 Ok(child)
311}
312
313struct ClaudeAgentSession {
314 outgoing_tx: UnboundedSender<SdkMessage>,
315 end_turn_tx: Rc<RefCell<Option<oneshot::Sender<Result<()>>>>>,
316 _mcp_server: Option<ClaudeZedMcpServer>,
317 _handler_task: Task<()>,
318}
319
320impl ClaudeAgentSession {
321 async fn handle_message(
322 mut thread_rx: watch::Receiver<WeakEntity<AcpThread>>,
323 message: SdkMessage,
324 end_turn_tx: Rc<RefCell<Option<oneshot::Sender<Result<()>>>>>,
325 cx: &mut AsyncApp,
326 ) {
327 match message {
328 // we should only be sending these out, they don't need to be in the thread
329 SdkMessage::ControlRequest { .. } => {}
330 SdkMessage::Assistant {
331 message,
332 session_id: _,
333 }
334 | SdkMessage::User {
335 message,
336 session_id: _,
337 } => {
338 let Some(thread) = thread_rx
339 .recv()
340 .await
341 .log_err()
342 .and_then(|entity| entity.upgrade())
343 else {
344 log::error!("Received an SDK message but thread is gone");
345 return;
346 };
347
348 for chunk in message.content.chunks() {
349 match chunk {
350 ContentChunk::Text { text } | ContentChunk::UntaggedText(text) => {
351 thread
352 .update(cx, |thread, cx| {
353 thread.push_assistant_content_block(text.into(), false, cx)
354 })
355 .log_err();
356 }
357 ContentChunk::ToolUse { id, name, input } => {
358 let claude_tool = ClaudeTool::infer(&name, input);
359
360 thread
361 .update(cx, |thread, cx| {
362 if let ClaudeTool::TodoWrite(Some(params)) = claude_tool {
363 thread.update_plan(
364 acp::Plan {
365 entries: params
366 .todos
367 .into_iter()
368 .map(Into::into)
369 .collect(),
370 },
371 cx,
372 )
373 } else {
374 thread.upsert_tool_call(
375 claude_tool.as_acp(acp::ToolCallId(id.into())),
376 cx,
377 );
378 }
379 })
380 .log_err();
381 }
382 ContentChunk::ToolResult {
383 content,
384 tool_use_id,
385 } => {
386 let content = content.to_string();
387 thread
388 .update(cx, |thread, cx| {
389 thread.update_tool_call(
390 acp::ToolCallUpdate {
391 id: acp::ToolCallId(tool_use_id.into()),
392 fields: acp::ToolCallUpdateFields {
393 status: Some(acp::ToolCallStatus::Completed),
394 content: (!content.is_empty())
395 .then(|| vec![content.into()]),
396 ..Default::default()
397 },
398 },
399 cx,
400 )
401 })
402 .log_err();
403 }
404 ContentChunk::Image
405 | ContentChunk::Document
406 | ContentChunk::Thinking
407 | ContentChunk::RedactedThinking
408 | ContentChunk::WebSearchToolResult => {
409 thread
410 .update(cx, |thread, cx| {
411 thread.push_assistant_content_block(
412 format!("Unsupported content: {:?}", chunk).into(),
413 false,
414 cx,
415 )
416 })
417 .log_err();
418 }
419 }
420 }
421 }
422 SdkMessage::Result {
423 is_error,
424 subtype,
425 result,
426 ..
427 } => {
428 if let Some(end_turn_tx) = end_turn_tx.borrow_mut().take() {
429 if is_error {
430 end_turn_tx
431 .send(Err(anyhow!(
432 "Error: {}",
433 result.unwrap_or_else(|| subtype.to_string())
434 )))
435 .ok();
436 } else {
437 end_turn_tx.send(Ok(())).ok();
438 }
439 }
440 }
441 SdkMessage::System { .. } => {}
442 }
443 }
444
445 async fn handle_io(
446 mut outgoing_rx: UnboundedReceiver<SdkMessage>,
447 incoming_tx: UnboundedSender<SdkMessage>,
448 mut outgoing_bytes: impl Unpin + AsyncWrite,
449 incoming_bytes: impl Unpin + AsyncRead,
450 ) -> Result<UnboundedReceiver<SdkMessage>> {
451 let mut output_reader = BufReader::new(incoming_bytes);
452 let mut outgoing_line = Vec::new();
453 let mut incoming_line = String::new();
454 loop {
455 select_biased! {
456 message = outgoing_rx.next() => {
457 if let Some(message) = message {
458 outgoing_line.clear();
459 serde_json::to_writer(&mut outgoing_line, &message)?;
460 log::trace!("send: {}", String::from_utf8_lossy(&outgoing_line));
461 outgoing_line.push(b'\n');
462 outgoing_bytes.write_all(&outgoing_line).await.ok();
463 } else {
464 break;
465 }
466 }
467 bytes_read = output_reader.read_line(&mut incoming_line).fuse() => {
468 if bytes_read? == 0 {
469 break
470 }
471 log::trace!("recv: {}", &incoming_line);
472 match serde_json::from_str::<SdkMessage>(&incoming_line) {
473 Ok(message) => {
474 incoming_tx.unbounded_send(message).log_err();
475 }
476 Err(error) => {
477 log::error!("failed to parse incoming message: {error}. Raw: {incoming_line}");
478 }
479 }
480 incoming_line.clear();
481 }
482 }
483 }
484
485 Ok(outgoing_rx)
486 }
487}
488
489#[derive(Debug, Clone, Serialize, Deserialize)]
490struct Message {
491 role: Role,
492 content: Content,
493 #[serde(skip_serializing_if = "Option::is_none")]
494 id: Option<String>,
495 #[serde(skip_serializing_if = "Option::is_none")]
496 model: Option<String>,
497 #[serde(skip_serializing_if = "Option::is_none")]
498 stop_reason: Option<String>,
499 #[serde(skip_serializing_if = "Option::is_none")]
500 stop_sequence: Option<String>,
501 #[serde(skip_serializing_if = "Option::is_none")]
502 usage: Option<Usage>,
503}
504
505#[derive(Debug, Clone, Serialize, Deserialize)]
506#[serde(untagged)]
507enum Content {
508 UntaggedText(String),
509 Chunks(Vec<ContentChunk>),
510}
511
512impl Content {
513 pub fn chunks(self) -> impl Iterator<Item = ContentChunk> {
514 match self {
515 Self::Chunks(chunks) => chunks.into_iter(),
516 Self::UntaggedText(text) => vec![ContentChunk::Text { text: text.clone() }].into_iter(),
517 }
518 }
519}
520
521impl Display for Content {
522 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
523 match self {
524 Content::UntaggedText(txt) => write!(f, "{}", txt),
525 Content::Chunks(chunks) => {
526 for chunk in chunks {
527 write!(f, "{}", chunk)?;
528 }
529 Ok(())
530 }
531 }
532 }
533}
534
535#[derive(Debug, Clone, Serialize, Deserialize)]
536#[serde(tag = "type", rename_all = "snake_case")]
537enum ContentChunk {
538 Text {
539 text: String,
540 },
541 ToolUse {
542 id: String,
543 name: String,
544 input: serde_json::Value,
545 },
546 ToolResult {
547 content: Content,
548 tool_use_id: String,
549 },
550 // TODO
551 Image,
552 Document,
553 Thinking,
554 RedactedThinking,
555 WebSearchToolResult,
556 #[serde(untagged)]
557 UntaggedText(String),
558}
559
560impl Display for ContentChunk {
561 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
562 match self {
563 ContentChunk::Text { text } => write!(f, "{}", text),
564 ContentChunk::UntaggedText(text) => write!(f, "{}", text),
565 ContentChunk::ToolResult { content, .. } => write!(f, "{}", content),
566 ContentChunk::Image
567 | ContentChunk::Document
568 | ContentChunk::Thinking
569 | ContentChunk::RedactedThinking
570 | ContentChunk::ToolUse { .. }
571 | ContentChunk::WebSearchToolResult => {
572 write!(f, "\n{:?}\n", &self)
573 }
574 }
575 }
576}
577
578#[derive(Debug, Clone, Serialize, Deserialize)]
579struct Usage {
580 input_tokens: u32,
581 cache_creation_input_tokens: u32,
582 cache_read_input_tokens: u32,
583 output_tokens: u32,
584 service_tier: String,
585}
586
587#[derive(Debug, Clone, Serialize, Deserialize)]
588#[serde(rename_all = "snake_case")]
589enum Role {
590 System,
591 Assistant,
592 User,
593}
594
595#[derive(Debug, Clone, Serialize, Deserialize)]
596struct MessageParam {
597 role: Role,
598 content: String,
599}
600
601#[derive(Debug, Clone, Serialize, Deserialize)]
602#[serde(tag = "type", rename_all = "snake_case")]
603enum SdkMessage {
604 // An assistant message
605 Assistant {
606 message: Message, // from Anthropic SDK
607 #[serde(skip_serializing_if = "Option::is_none")]
608 session_id: Option<String>,
609 },
610 // A user message
611 User {
612 message: Message, // from Anthropic SDK
613 #[serde(skip_serializing_if = "Option::is_none")]
614 session_id: Option<String>,
615 },
616 // Emitted as the last message in a conversation
617 Result {
618 subtype: ResultErrorType,
619 duration_ms: f64,
620 duration_api_ms: f64,
621 is_error: bool,
622 num_turns: i32,
623 #[serde(skip_serializing_if = "Option::is_none")]
624 result: Option<String>,
625 session_id: String,
626 total_cost_usd: f64,
627 },
628 // Emitted as the first message at the start of a conversation
629 System {
630 cwd: String,
631 session_id: String,
632 tools: Vec<String>,
633 model: String,
634 mcp_servers: Vec<McpServer>,
635 #[serde(rename = "apiKeySource")]
636 api_key_source: String,
637 #[serde(rename = "permissionMode")]
638 permission_mode: PermissionMode,
639 },
640 /// Messages used to control the conversation, outside of chat messages to the model
641 ControlRequest {
642 request_id: String,
643 request: ControlRequest,
644 },
645}
646
647#[derive(Debug, Clone, Serialize, Deserialize)]
648#[serde(tag = "subtype", rename_all = "snake_case")]
649enum ControlRequest {
650 /// Cancel the current conversation
651 Interrupt,
652}
653
654#[derive(Debug, Clone, Serialize, Deserialize)]
655#[serde(rename_all = "snake_case")]
656enum ResultErrorType {
657 Success,
658 ErrorMaxTurns,
659 ErrorDuringExecution,
660}
661
662impl Display for ResultErrorType {
663 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
664 match self {
665 ResultErrorType::Success => write!(f, "success"),
666 ResultErrorType::ErrorMaxTurns => write!(f, "error_max_turns"),
667 ResultErrorType::ErrorDuringExecution => write!(f, "error_during_execution"),
668 }
669 }
670}
671
672impl SdkMessage {
673 fn new_interrupt_message() -> Self {
674 use rand::Rng;
675 // In the Claude Code TS SDK they just generate a random 12 character string,
676 // `Math.random().toString(36).substring(2, 15)`
677 let request_id = rand::thread_rng()
678 .sample_iter(&rand::distributions::Alphanumeric)
679 .take(12)
680 .map(char::from)
681 .collect();
682
683 Self::ControlRequest {
684 request_id,
685 request: ControlRequest::Interrupt,
686 }
687 }
688}
689
690#[derive(Debug, Clone, Serialize, Deserialize)]
691struct McpServer {
692 name: String,
693 status: String,
694}
695
696#[derive(Debug, Clone, Serialize, Deserialize)]
697#[serde(rename_all = "camelCase")]
698enum PermissionMode {
699 Default,
700 AcceptEdits,
701 BypassPermissions,
702 Plan,
703}
704
705#[cfg(test)]
706pub(crate) mod tests {
707 use super::*;
708 use serde_json::json;
709
710 crate::common_e2e_tests!(ClaudeCode);
711
712 pub fn local_command() -> AgentServerCommand {
713 AgentServerCommand {
714 path: "claude".into(),
715 args: vec![],
716 env: None,
717 }
718 }
719
720 #[test]
721 fn test_deserialize_content_untagged_text() {
722 let json = json!("Hello, world!");
723 let content: Content = serde_json::from_value(json).unwrap();
724 match content {
725 Content::UntaggedText(text) => assert_eq!(text, "Hello, world!"),
726 _ => panic!("Expected UntaggedText variant"),
727 }
728 }
729
730 #[test]
731 fn test_deserialize_content_chunks() {
732 let json = json!([
733 {
734 "type": "text",
735 "text": "Hello"
736 },
737 {
738 "type": "tool_use",
739 "id": "tool_123",
740 "name": "calculator",
741 "input": {"operation": "add", "a": 1, "b": 2}
742 }
743 ]);
744 let content: Content = serde_json::from_value(json).unwrap();
745 match content {
746 Content::Chunks(chunks) => {
747 assert_eq!(chunks.len(), 2);
748 match &chunks[0] {
749 ContentChunk::Text { text } => assert_eq!(text, "Hello"),
750 _ => panic!("Expected Text chunk"),
751 }
752 match &chunks[1] {
753 ContentChunk::ToolUse { id, name, input } => {
754 assert_eq!(id, "tool_123");
755 assert_eq!(name, "calculator");
756 assert_eq!(input["operation"], "add");
757 assert_eq!(input["a"], 1);
758 assert_eq!(input["b"], 2);
759 }
760 _ => panic!("Expected ToolUse chunk"),
761 }
762 }
763 _ => panic!("Expected Chunks variant"),
764 }
765 }
766
767 #[test]
768 fn test_deserialize_tool_result_untagged_text() {
769 let json = json!({
770 "type": "tool_result",
771 "content": "Result content",
772 "tool_use_id": "tool_456"
773 });
774 let chunk: ContentChunk = serde_json::from_value(json).unwrap();
775 match chunk {
776 ContentChunk::ToolResult {
777 content,
778 tool_use_id,
779 } => {
780 match content {
781 Content::UntaggedText(text) => assert_eq!(text, "Result content"),
782 _ => panic!("Expected UntaggedText content"),
783 }
784 assert_eq!(tool_use_id, "tool_456");
785 }
786 _ => panic!("Expected ToolResult variant"),
787 }
788 }
789
790 #[test]
791 fn test_deserialize_tool_result_chunks() {
792 let json = json!({
793 "type": "tool_result",
794 "content": [
795 {
796 "type": "text",
797 "text": "Processing complete"
798 },
799 {
800 "type": "text",
801 "text": "Result: 42"
802 }
803 ],
804 "tool_use_id": "tool_789"
805 });
806 let chunk: ContentChunk = serde_json::from_value(json).unwrap();
807 match chunk {
808 ContentChunk::ToolResult {
809 content,
810 tool_use_id,
811 } => {
812 match content {
813 Content::Chunks(chunks) => {
814 assert_eq!(chunks.len(), 2);
815 match &chunks[0] {
816 ContentChunk::Text { text } => assert_eq!(text, "Processing complete"),
817 _ => panic!("Expected Text chunk"),
818 }
819 match &chunks[1] {
820 ContentChunk::Text { text } => assert_eq!(text, "Result: 42"),
821 _ => panic!("Expected Text chunk"),
822 }
823 }
824 _ => panic!("Expected Chunks content"),
825 }
826 assert_eq!(tool_use_id, "tool_789");
827 }
828 _ => panic!("Expected ToolResult variant"),
829 }
830 }
831}