#669: explicit imports in flutter.rs, a capped layer's name stays on its comment line, the Flutter variant asserts in their own test, the Arabic catalog's key

crates/engine/src/component_codegen_tests.rs

@@ -224,10 +224,6 @@ fn variant_sets_share_one_definition() {
     let kt = code(&mut s, set, "compose");
     assert!(kt.contains("enum class ButtonState { Default, Hover }"), "{kt}");
     assert!(kt.contains("    state: ButtonState = ButtonState.Default,"), "{kt}");
-    let dart = code(&mut s, set, "flutter");
-    assert!(dart.contains("enum ButtonState { defaultValue, hover }\n"), "{dart}");
-    assert!(dart.contains("    this.state = ButtonState.defaultValue,\n"), "{dart}");
-    assert!(dart.contains("  final ButtonState state;\n"), "{dart}");
     let ark = code(&mut s, set, "arkui");
     assert!(ark.contains("export enum ButtonState { Default, Hover }"), "{ark}");
     assert!(ark.contains("    @Prop state: ButtonState = ButtonState.Default"), "{ark}");
@@ -247,11 +243,23 @@ fn variant_sets_share_one_definition() {
     assert_eq!(component_code(&mut s, i, "react")["usage"], "<Button state=\"Hover\" />\n");
     assert_eq!(component_code(&mut s, i, "swiftui")["usage"], "Button(state: .hover)\n");
     assert_eq!(component_code(&mut s, i, "compose")["usage"], "Button(state = ButtonState.Hover)\n");
-    assert_eq!(component_code(&mut s, i, "flutter")["usage"], "Button(state: ButtonState.hover)\n");
     assert_eq!(component_code(&mut s, i, "arkui")["usage"], "Button({ state: ButtonState.Hover })\n");
     assert_eq!(component_code(&mut s, i, "leptos")["usage"], "<Button state=ButtonState::Hover />\n");
 }
 
+#[test]
+fn flutter_variant_sets_share_one_enum() {
+    let mut s = Session::new();
+    let (set, _, _) = button_set(&mut s);
+    let dart = code(&mut s, set, "flutter");
+    assert!(dart.contains("enum ButtonState { defaultValue, hover }\n"), "{dart}");
+    assert!(dart.contains("    this.state = ButtonState.defaultValue,\n"), "{dart}");
+    assert!(dart.contains("  final ButtonState state;\n"), "{dart}");
+    let i = idv(&ex(&mut s, "instance.create", json!({"component": set, "x": 0, "y": 600})));
+    ex(&mut s, "instance.setProperties", json!({"ids": [i], "properties": {"State": "Hover"}}));
+    assert_eq!(component_code(&mut s, i, "flutter")["usage"], "Button(state: ButtonState.hover)\n");
+}
+
 #[test]
 fn instance_swap_properties_take_views() {
     let mut s = Session::new();

crates/engine/src/dev/codegen.rs

@@ -608,6 +608,20 @@ mod tests {
         assert!(dart.contains("const SizedBox()"), "a capped layer is still a widget in the list: {dart}");
     }
 
+    #[test]
+    fn flutter_keeps_a_capped_layers_name_on_its_comment_line() {
+        let mut s = Session::new();
+        let root = id_of(&s.execute("frame.create", &json!({"x": 0, "y": 0, "width": 50, "height": 50})).unwrap()["id"]).unwrap();
+        let mut parent = root;
+        for _ in 0..20 {
+            let p = json!({"x": 1, "y": 1, "width": 40, "height": 40, "parent": parent, "name": "deep\nvoid main() {}"});
+            parent = id_of(&s.execute("frame.create", &p).unwrap()["id"]).unwrap();
+        }
+        let dart = code_for(s.doc().unwrap(), root, CodeLang::Flutter);
+        assert!(dart.contains("…"), "the depth is capped: {dart}");
+        assert!(!dart.lines().any(|l| l.trim_start().starts_with("void main()")), "a name never leaves its comment: {dart}");
+    }
+
     #[test]
     fn flutter_expands_and_stretches_fill_children() {
         let mut s = Session::new();

crates/engine/src/dev/codegen/flutter.rs

@@ -1,4 +1,10 @@
-use super::*;
+use figcraft_doc::AutoLayout;
+
+use super::swift::one_line;
+use super::{
+    CodeLang, CrossAlign, Ctx, LayoutMode, LetterSpacing, LineHeight, MainAlign, Node, NodeId, NodeKind, Param, Sizing, TextAlignH, TextDecoration,
+    drop_shadow, first_fill, kotlin_color, literal, num, radius, stroke_color,
+};
 
 // ------------------------------------------------------------------ Flutter (Dart)
 
@@ -118,7 +124,7 @@ pub(crate) fn flutter(ctx: &Ctx, id: NodeId, depth: usize, out: &mut String, pla
 fn flutter_placed(ctx: &Ctx, n: &Node, depth: usize, out: &mut String, place: Place) {
     if ctx.too_deep(depth) {
         let pad = flutter_indent(depth);
-        out.push_str(&format!("{pad}// {} …\n{pad}const SizedBox()", n.name));
+        out.push_str(&format!("{pad}// {} …\n{pad}const SizedBox()", one_line(&n.name)));
         return;
     }
     let mut depth = depth;