snapshot of https://github.com/flutter/samples.git (main, 2026-09-16; blobs > 131072B omitted)

animations/test/misc/card_swipe_test.dart

@@ -0,0 +1,71 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:animations/src/misc/card_swipe.dart';
+import 'package:flutter/material.dart' hide Card;
+import 'package:flutter_test/flutter_test.dart';
+
+Widget createCardSwipeScreen() => const MaterialApp(home: CardSwipeDemo());
+
+void main() {
+  group('Card Swipe Tests', () {
+    testWidgets('One card swiped out', (tester) async {
+      await tester.pumpWidget(createCardSwipeScreen());
+
+      // Get the total number of cards available.
+      var totalCards = tester.widgetList(find.byType(Card)).length;
+
+      // Ensure card is visible.
+      await tester.ensureVisible(find.byType(Card).last);
+
+      // Swipe out one card.
+      await tester.drag(find.byType(Card).last, const Offset(100.0, 0.0));
+      await tester.pumpAndSettle();
+
+      // Check if removed properly.
+      expect(
+        tester.widgetList(find.byType(Card)).length,
+        lessThan(totalCards),
+      );
+    });
+
+    testWidgets('All cards swiped out', (tester) async {
+      await tester.pumpWidget(createCardSwipeScreen());
+
+      // Get the total number of cards availabe.
+      var totalCards = tester.widgetList(find.byType(Card)).length;
+
+      // Swipe out all cards.
+      for (var i = 0; i < totalCards; i++) {
+        // Swipe out one by one.
+        await tester.drag(
+          find.byType(Card).last,
+          const Offset(100.0, 0.0),
+        );
+        await tester.pumpAndSettle();
+      }
+
+      // Check if any card is remaining.
+      expect(find.byType(Card), findsNothing);
+    });
+
+    testWidgets('Stack refilled with cards', (tester) async {
+      await tester.pumpWidget(createCardSwipeScreen());
+
+      // Get the total number of cards availabe.
+      var totalCards = tester.widgetList(find.byType(Card)).length;
+
+      // Swipe out one card.
+      await tester.drag(find.byType(Card).last, const Offset(100.0, 0.0));
+      await tester.pumpAndSettle();
+
+      // Tap the Refill button.
+      await tester.tap(find.byType(ElevatedButton));
+      await tester.pumpAndSettle();
+
+      // Check if the entire stack is refilled.
+      expect(find.byType(Card), findsNWidgets(totalCards));
+    });
+  });
+}