add a slow test

Author: davidbarsky

crates/rust-analyzer/tests/slow-tests/main.rs

@@ -29,7 +29,7 @@ use lsp_types::{
     PartialResultParams, Position, Range, RenameFilesParams, TextDocumentItem,
     TextDocumentPositionParams, WorkDoneProgressParams,
 };
-use rust_analyzer::lsp::ext::{OnEnter, Runnables, RunnablesParams};
+use rust_analyzer::lsp::ext::{OnEnter, Runnables, RunnablesParams, UnindexedProject};
 use serde_json::json;
 use test_utils::skip_slow_tests;
 
@@ -588,6 +588,66 @@ fn main() {{}}
     );
 }
 
+#[test]
+fn test_opening_a_file_outside_of_indexed_workspace() {
+    if skip_slow_tests() {
+        return;
+    }
+
+    let tmp_dir = TestDir::new();
+    let path = tmp_dir.path();
+
+    let project = json!({
+        "roots": [path],
+        "crates": [ {
+            "root_module": path.join("src/crate_one/lib.rs"),
+            "deps": [],
+            "edition": "2015",
+            "cfg": [ "cfg_atom_1", "feature=\"cfg_1\""],
+        } ]
+    });
+
+    let code = format!(
+        r#"
+//- /rust-project.json
+{project}
+
+//- /src/crate_one/lib.rs
+mod bar;
+
+fn main() {{}}
+"#,
+    );
+
+    let server = Project::with_fixture(&code)
+        .tmp_dir(tmp_dir)
+        .with_config(serde_json::json!({
+            "notifications": {
+                "unindexedProject": true
+            },
+        }))
+        .server()
+        .wait_until_workspace_is_loaded();
+
+    let uri = server.doc_id(&format!("src/crate_two/lib.rs")).uri;
+    server.notification::<DidOpenTextDocument>(DidOpenTextDocumentParams {
+        text_document: TextDocumentItem {
+            uri: uri.clone(),
+            language_id: "rust".to_string(),
+            version: 0,
+            text: "/// Docs\nfn foo() {}".to_string(),
+        },
+    });
+    let expected = json!({
+        "textDocuments": [
+            {
+                "uri": uri
+            }
+        ]
+    });
+    server.expect_notification::<UnindexedProject>(expected);
+}
+
 #[test]
 fn diagnostics_dont_block_typing() {
     if skip_slow_tests() {

crates/rust-analyzer/tests/slow-tests/support.rs

@@ -198,6 +198,37 @@ impl Server {
         self.send_notification(r)
     }
 
+    pub(crate) fn expect_notification<N>(&self, expected: Value)
+    where
+        N: lsp_types::notification::Notification,
+        N::Params: Serialize,
+    {
+        let msg = recv_timeout(&self.client.receiver).unwrap_or_else(|_| panic!("timed out"));
+
+        let Some(Message::Notification(actual)) = msg else {
+            panic!("did not get a notification");
+        };
+
+        if actual.method == N::METHOD {
+            let actual = actual
+                .clone()
+                .extract::<Value>(N::METHOD)
+                .expect("was not able to extract notification");
+
+            if let Some((expected_part, actual_part)) = find_mismatch(&expected, &actual) {
+                panic!(
+                    "JSON mismatch\nExpected:\n{}\nWas:\n{}\nExpected part:\n{}\nActual part:\n{}\n",
+                    to_string_pretty(&expected).unwrap(),
+                    to_string_pretty(&actual).unwrap(),
+                    to_string_pretty(expected_part).unwrap(),
+                    to_string_pretty(actual_part).unwrap(),
+                );
+            }
+        } else {
+            panic!("mismatched method: {}", actual.method);
+        }
+    }
+
     #[track_caller]
     pub(crate) fn request<R>(&self, params: R::Params, expected_resp: Value)
     where