fix(download): make picker drag dismissal natural

2026-08-02 09:08:35 +02:00 · 2026-07-29 19:59:09 +07:00
parent 6f94aae0cc
commit 43a8d08851
3 changed files with 104 additions and 6 deletions
@@ -259,6 +259,64 @@ void main() {
      expect(find.text('body'), findsOneWidget);
    });

+    testWidgets('draggable content moves as one surface and dismisses', (
+      tester,
+    ) async {
+      const sheetKey = ValueKey<String>('scrollable-sheet');
+      await tester.pumpWidget(
+        MaterialApp(
+          theme: AppTheme.light(),
+          home: Scaffold(
+            body: Builder(
+              builder: (context) => ElevatedButton(
+                onPressed: () => showModalBottomSheet<void>(
+                  context: context,
+                  isScrollControlled: true,
+                  // Disable the route recognizer so the draggable surface,
+                  // rather than the modal's fallback gesture, is under test.
+                  enableDrag: false,
+                  builder: (_) => AppDraggableSheet(
+                    builder: (_, scrollController) => Material(
+                      key: sheetKey,
+                      child: ListView(
+                        controller: scrollController,
+                        children: const [
+                          SizedBox(height: 800, child: Text('sheet body')),
+                        ],
+                      ),
+                    ),
+                  ),
+                ),
+                child: const Text('open'),
+              ),
+            ),
+          ),
+        ),
+      );
+
+      await tester.tap(find.text('open'));
+      await tester.pumpAndSettle();
+      expect(find.byKey(sheetKey), findsOneWidget);
+
+      final initialTop = tester.getTopLeft(find.byKey(sheetKey)).dy;
+      final gesture = await tester.startGesture(
+        tester.getCenter(find.byKey(sheetKey)),
+      );
+      await gesture.moveBy(const Offset(0, 160));
+      await tester.pump();
+
+      expect(
+        tester.getTopLeft(find.byKey(sheetKey)).dy,
+        greaterThan(initialTop + 100),
+      );
+
+      await gesture.moveBy(const Offset(0, 260));
+      await gesture.up();
+      await tester.pumpAndSettle();
+
+      expect(find.byKey(sheetKey), findsNothing);
+    });
+
    testWidgets('sheet shape comes from the token scale', (tester) async {
      final shape =
          AppTheme.light().bottomSheetTheme.shape! as RoundedRectangleBorder;