add did_change_stress_test back

sway-lsp/tests/lib.rs

@@ -112,6 +112,26 @@ async fn did_cache_test() {
     shutdown_and_exit(&mut service).await;
 }
 
+// #[tokio::test]
+#[allow(dead_code)]
+async fn did_change_stress_test() {
+    let (mut service, _) = LspService::build(ServerState::new)
+        .custom_method("sway/metrics", ServerState::metrics)
+        .finish();
+    let uri = init_and_open(&mut service, doc_comments_dir().join("src/main.sw")).await;
+    let times = 20;
+    for _ in 0..times {
+        let _ = lsp::did_change_request(&mut service, &uri).await;
+        let metrics = lsp::metrics_request(&mut service, &uri).await;
+        for (path, metrics) in metrics {
+            if path.contains("sway-lib-core") || path.contains("sway-lib-std") {
+                assert!(metrics.reused_modules >= 1);
+            }
+        }
+    }
+    shutdown_and_exit(&mut service).await;
+}
+
 #[tokio::test]
 async fn lsp_syncs_with_workspace_edits() {
     let (mut service, _) = LspService::new(ServerState::new);