More following tests

crates/gpui/src/app/test_context.rs

@@ -223,6 +223,10 @@ impl TestAppContext {
             .unwrap();
     }
 
+    pub fn windows(&self) -> Vec<AnyWindowHandle> {
+        self.app.borrow().windows().clone()
+    }
+
     pub fn spawn<Fut, R>(&self, f: impl FnOnce(AsyncAppContext) -> Fut) -> Task<R>
     where
         Fut: Future<Output = R> + 'static,

crates/gpui/src/platform/test/platform.rs

@@ -105,9 +105,7 @@ impl Platform for TestPlatform {
         unimplemented!()
     }
 
-    fn activate(&self, _ignoring_other_apps: bool) {
-        unimplemented!()
-    }
+    fn activate(&self, _ignoring_other_apps: bool) {}
 
     fn hide(&self) {
         unimplemented!()

crates/workspace/src/workspace.rs

@@ -2451,11 +2451,11 @@ impl Workspace {
         Some(leader_id)
     }
 
-    //     pub fn is_being_followed(&self, peer_id: PeerId) -> bool {
-    //         self.follower_states
-    //             .values()
-    //             .any(|state| state.leader_id == peer_id)
-    //     }
+    pub fn is_being_followed(&self, peer_id: PeerId) -> bool {
+        self.follower_states
+            .values()
+            .any(|state| state.leader_id == peer_id)
+    }
 
     fn active_item_path_changed(&mut self, cx: &mut ViewContext<Self>) {
         let active_entry = self.active_project_path(cx);