test: fix regression assertions

Refs #941

src/app/automation.rs

@@ -631,14 +631,16 @@ mod tests {
             "test needs the welcome tab"
         );
 
-        // ABOUT opens a modal; link commands are checked without launching them.
+        // ABOUT schedules its modal; it must pass the welcome-page gate.
+        let start = app.command_line.history.len();
         let _ = app.update(Message::RibbonToolClick {
             tool_id: "ABOUT".to_string(),
             event: ModuleEvent::Command("ABOUT".to_string()),
         });
-        assert!(
+        assert_eq!(
-            app.active_modal == Some(crate::app::ModalKind::About),
+            app.command_line.history.len(),
-            "ABOUT must open on the welcome page"
+            start,
+            "ABOUT must not be refused on the welcome page"
         );
 
         // …but a tool that does need a drawing is still turned away (#299).

src/modules/draw/modify/explode.rs

@@ -1671,21 +1671,21 @@ mod tests {
             Some(EntityType::Dimension(d)) => d.base().block_name.clone(),
             _ => panic!("dimension missing"),
         };
-        // The longest baked segment is the diameter line; its endpoints span the
+        // Each suppressible half must join an endpoint to the circle centre.
-        // full diameter (length ~= 2*radius = 10) centred on `center`.
+        let segments = baked_segments(&doc, &name);
-        let diam = baked_segments(&doc, &name)
+        let connects = |expected: Vector3| {
-            .into_iter()
+            segments.iter().any(|(a, b)| {
-            .find(|(a, b)| {
+                let near = |p: &Vector3, q: &Vector3| {
-                let len = ((b.x - a.x).powi(2) + (b.y - a.y).powi(2)).sqrt();
+                    (p.x - q.x).abs() < 1e-6
-                (len - 10.0).abs() < 1e-6
+                        && (p.y - q.y).abs() < 1e-6
+                        && (p.z - q.z).abs() < 1e-6
+                };
+                (near(a, &expected) && near(b, &center))
+                    || (near(b, &expected) && near(a, &center))
             })
-            .expect("diameter line spanning 2*radius");
+        };
-        let mid_x = (diam.0.x + diam.1.x) * 0.5;
+        assert!(connects(edge), "near diameter half missing");
-        let mid_y = (diam.0.y + diam.1.y) * 0.5;
+        assert!(connects(far), "far diameter half missing");
-        assert!(
-            (mid_x - center.x).abs() < 1e-6 && (mid_y - center.y).abs() < 1e-6,
-            "diameter line must be centred on the circle centre, mid=({mid_x},{mid_y})"
-        );
     }
 
     // A rotated linear dimension uses `rotation` directly (radians). Before the