Correct mounted scenario camera and palette assertions

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

@@ -58,7 +58,7 @@ pub fn controls<'a>(
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct Scope {
-    pub scenario_view: Option<(super::scenario_layout::Representation, Id)>,
+    pub(crate) scenario_view: Option<(super::scenario_layout::Representation, Id)>,
     pub document: Id,
     pub owner: Id,
     pub revision: u64,

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

@@ -48,8 +48,28 @@ async fn production_scenario_canvas_keeps_bounds_draft_identity_and_camera_throu
             mounted.pan(&mut app, start, start + delta).await;
             let diff = app.behavior.scenario.presentation.pan - next_pan;
             assert!(diff.x.hypot(diff.y) < 0.01);
-            let tool = mounted.geometry(&app).bounds("behavior-tool:A").center();
-            mounted.click(&mut app, tool).await;
+            // Iced operations report palette children in content coordinates.
+            // The preceding Action focus may have scrolled this retained palette.
+            let geometry = mounted.geometry(&app);
+            let scope = canvas_workspace::Scope::current(&app).unwrap();
+            let (palette, offset) = geometry.scrolls[&scope.control_id("palette-scroll")];
+            let tool = geometry.bounds("behavior-tool:A").center() - offset;
+            assert!(
+                palette.contains(tool),
+                "visible Action at {tool:?}: {palette:?}"
+            );
+            let chosen = mounted.click(&mut app, tool).await;
+            assert!(
+                chosen.iter().any(|message| matches!(
+                    canvas_workspace::tests::intent_action(message),
+                    Message::ScenarioCanvas(CanvasEvent::Choose(_, CanvasTool::Add(Tool::Action)))
+                )),
+                "Action palette click at scale {scale}, offset {offset:?}: {chosen:?}"
+            );
+            assert_eq!(
+                app.behavior.scenario.canvas_tool(f.owner),
+                CanvasTool::Add(Tool::Action)
+            );
             let messages = mounted.click(&mut app, bounds.position() + desired).await;
             assert!(
                 messages.iter().any(
@@ -57,7 +77,7 @@ async fn production_scenario_canvas_keeps_bounds_draft_identity_and_camera_throu
                 tool: Tool::Action, slot, lifeline: Some(line), ..
             }) if *slot == expected && *line == f.sender)
                 ),
-                "scale {scale}: {messages:?}"
+                "scale {scale}, expected slot {expected:?}: {messages:?}"
             );
             let session = app.behavior.scenario.form_session().unwrap();
             let invocation = app.behavior.scenario.draft.as_ref().unwrap().invocation;
@@ -1337,7 +1357,18 @@ async fn production_scenario_camera_external_controls_bounds_and_retained_deltas
         let bounds = mounted.geometry(&app).bounds("scenario-viewport");
         let point = bounds.position() + iced::Vector::new(95., 90.);
         let lifetime = app.camera_epoch;
-        let pan = app.behavior.scenario.presentation.pan;
+        // Fit stores no pan offset. A real drag starts from the displayed fitted
+        // camera, then materializes it before applying its ordered screen deltas.
+        let shown = app
+            .behavior
+            .scenario
+            .display(app.project(), f.owner, app.selected)
+            .unwrap();
+        let before_camera = app
+            .behavior
+            .scenario
+            .presentation
+            .camera(shown.bounds().unwrap());
         let first = point + iced::Vector::new(13., 9.);
         let last = first + iced::Vector::new(17., -3.);
         let emitted = mounted
@@ -1352,7 +1383,21 @@ async fn production_scenario_camera_external_controls_bounds_and_retained_deltas
                 mouse::Cursor::Available(last),
             )
             .await;
-        assert_eq!(app.behavior.scenario.presentation.pan, pan + (last - point));
+        let expected_pan = before_camera.pan + (last - point);
+        let actual_pan = app.behavior.scenario.presentation.pan;
+        let difference = actual_pan - expected_pan;
+        assert!(
+            difference.x.hypot(difference.y) < 0.001,
+            "{boundary}: displayed pan {actual_pan:?} must follow {expected_pan:?}"
+        );
+        assert_eq!(
+            app.behavior.scenario.presentation.zoom,
+            Some(before_camera.scale)
+        );
+        assert!(
+            !app.behavior.scenario.presentation.fit,
+            "drag materializes the visible Fit camera"
+        );
         assert_eq!(
             app.camera_epoch, lifetime,
             "own ordered deltas retain their lifetime"