Update atomic call reply test for typed activation geometry

crates/oa-desktop/src/behavior/scenario.rs

@@ -3253,12 +3253,45 @@ mod tests {
                 .iter()
                 .any(|l| l.id == steps[1] && l.dashed && l.label.contains("reply"))
         );
-        assert!(
-            scene
-                .boxes
-                .iter()
-                .any(|b| b.id == steps[0] && b.rect.width == 8.)
+        assert_eq!(scene.activations.len(), 1);
+        let activation = &scene.activations[0];
+        assert_eq!(activation.call, steps[0]);
+        assert_eq!(activation.receiver, receiver);
+        assert_eq!(activation.scope, owner);
+        assert_eq!(
+            activation.finish,
+            scenario_activation::Finish::Reply(steps[1])
         );
+        // Scene::draw paints this typed rectangle directly. Check its extent
+        // against the actual message endpoints, without fixing a style width.
+        let rect = activation.rect;
+        assert!(
+            [rect.x, rect.y, rect.width, rect.height]
+                .iter()
+                .all(|v| v.is_finite())
+        );
+        assert!(rect.width > 0. && rect.height > 0.);
+        let call_line = scene.lines.iter().find(|l| l.id == steps[0]).unwrap();
+        let reply_line = scene.lines.iter().find(|l| l.id == steps[1]).unwrap();
+        let received = *call_line.points.last().unwrap();
+        let returned = reply_line.points[0];
+        assert_eq!(rect.y, received.y);
+        assert_eq!(rect.y + rect.height, returned.y);
+        assert_eq!(received.x, returned.x);
+        assert!(received.x == rect.x || received.x == rect.x + rect.width);
+        assert!(!scene.boxes.iter().any(|b| b.id == steps[0]));
+        assert!(scene.open_calls.is_empty());
+        let interior = rect.center();
+        assert!(scene.lines.iter().filter(|l| !l.label.is_empty()).all(|l| {
+            l.points.windows(2).all(|p| {
+                crate::diagram::distance_to_segment(interior, p[0], p[1]) > 8. / scene.scale
+            }) && !Rectangle::new(
+                l.label_at,
+                Size::new((l.label.chars().count() as f32 * 6.8 + 8.).min(225.), 25.),
+            )
+            .contains(interior)
+        }));
+        assert_eq!(scene.hit(interior), Some(steps[0]));
         let mut reply = State::default();
         reply
             .update(result, Event::Start(owner, Tool::Message))