Remove waiting for edits when handling code action RPC requests

Add code actions to the randomized integration test

Co-Authored-By: Nathan Sobo <nathan@zed.dev>

crates/project/src/project.rs

@@ -2433,11 +2433,10 @@ impl Project {
                 .and_then(|shared_buffers| shared_buffers.get(&envelope.payload.buffer_id).cloned())
                 .ok_or_else(|| anyhow!("unknown buffer id {}", envelope.payload.buffer_id))
         })?;
-        buffer
+        let version = buffer.read_with(&cx, |buffer, _| buffer.version());
-            .update(&mut cx, |buffer, _| {
+        if !version.observed(start.timestamp) || !version.observed(end.timestamp) {
-                buffer.wait_for_version([start.timestamp, end.timestamp].into_iter().collect())
+            Err(anyhow!("code action request references unreceived edits"))?;
-            })
+        }
-            .await;
         let code_actions = this.update(&mut cx, |this, cx| {
             Ok::<_, anyhow::Error>(this.code_actions(&buffer, start..end, cx))
         })?;

crates/server/src/rpc.rs

@@ -3622,6 +3622,15 @@ mod tests {
                     ..Default::default()
                 }]))
             });
+
+            fake_server.handle_request::<lsp::request::CodeActionRequest, _>(|_| {
+                Some(vec![lsp::CodeActionOrCommand::CodeAction(
+                    lsp::CodeAction {
+                        title: "the-code-action".to_string(),
+                        ..Default::default()
+                    },
+                )])
+            });
         });
 
         Arc::get_mut(&mut host_lang_registry)
@@ -4180,7 +4189,7 @@ mod tests {
                             drop(buffer);
                         });
                     }
-                    10..=19 => {
+                    10..=14 => {
                         project
                             .update(&mut cx, |project, cx| {
                                 log::info!(
@@ -4193,6 +4202,19 @@ mod tests {
                             .await
                             .expect("completion request failed");
                     }
+                    15..=19 => {
+                        project
+                            .update(&mut cx, |project, cx| {
+                                log::info!(
+                                    "Guest {}: requesting code actions for buffer {:?}",
+                                    guest_id,
+                                    buffer.read(cx).file().unwrap().full_path(cx)
+                                );
+                                project.code_actions(&buffer, 0..0, cx)
+                            })
+                            .await
+                            .expect("completion request failed");
+                    }
                     _ => {
                         buffer.update(&mut cx, |buffer, cx| {
                             log::info!(