From 43bb6186d2543f55457929c5ca8709f180fff7af Mon Sep 17 00:00:00 2001
From: Valentin Vignal <32538273+ValentinVignal@users.noreply.github.com>
Date: Fri, 1 Nov 2024 14:41:13 +0800
Subject: [PATCH] Add test for `notification.0.dart` (#157909)

Contributes to https://github.com/flutter/flutter/issues/130459

It adds a test for
- `examples/api/lib/widgets/notification_listener/notification.0.dart`
---
 dev/bots/check_code_samples.dart              |   1 -
 .../notification.0_test.dart                  | 125 ++++++++++++++++++
 2 files changed, 125 insertions(+), 1 deletion(-)
 create mode 100644 examples/api/test/widgets/notification_listener/notification.0_test.dart

diff --git a/dev/bots/check_code_samples.dart b/dev/bots/check_code_samples.dart
index 13118675bd..d42b498bf3 100644
--- a/dev/bots/check_code_samples.dart
+++ b/dev/bots/check_code_samples.dart
@@ -319,5 +319,4 @@ final Set<String> _knownMissingTests = <String>{
   'examples/api/test/widgets/scrollbar/raw_scrollbar.0_test.dart',
   'examples/api/test/widgets/interactive_viewer/interactive_viewer.constrained.0_test.dart',
   'examples/api/test/widgets/interactive_viewer/interactive_viewer.transformation_controller.0_test.dart',
-  'examples/api/test/widgets/notification_listener/notification.0_test.dart',
 };
diff --git a/examples/api/test/widgets/notification_listener/notification.0_test.dart b/examples/api/test/widgets/notification_listener/notification.0_test.dart
new file mode 100644
index 0000000000..d8c9f9d2f1
--- /dev/null
+++ b/examples/api/test/widgets/notification_listener/notification.0_test.dart
@@ -0,0 +1,125 @@
+// Copyright 2014 The Flutter Authors. 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:flutter/foundation.dart';
+import 'package:flutter/gestures.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_api_samples/widgets/notification_listener/notification.0.dart' as example;
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  testWidgets('Shows all elements', (WidgetTester tester) async {
+    final DebugPrintCallback originalDebugPrint = debugPrint;
+    debugPrint = (String? message, {int? wrapWidth}) {};
+    await tester.pumpWidget(
+      const example.NotificationExampleApp(),
+    );
+
+    expect(find.byType(NestedScrollView), findsOne);
+    expect(find.widgetWithText(SliverAppBar, 'Notification Sample'), findsOne);
+    expect(find.byType(TabBarView), findsOne);
+    expect(find.widgetWithText(Tab, 'Months'), findsOne);
+    expect(find.widgetWithText(Tab, 'Days'), findsOne);
+    expect(find.widgetWithText(ListTile, 'January'), findsOne);
+    expect(find.widgetWithText(ListTile, 'February'), findsOne);
+    expect(find.widgetWithText(ListTile, 'March'), findsOne);
+
+    await tester.tap(find.text('Days'));
+    await tester.pumpAndSettle();
+
+    expect(find.widgetWithText(ListTile, 'Sunday'), findsOne);
+    expect(find.widgetWithText(ListTile, 'Monday'), findsOne);
+    expect(find.widgetWithText(ListTile, 'Tuesday'), findsOne);
+
+    debugPrint = originalDebugPrint;
+  });
+
+  testWidgets('Scrolling the scroll view triggers the notification', (WidgetTester tester) async {
+    final DebugPrintCallback originalDebugPrint = debugPrint;
+    final List<String> logs = <String>[];
+    debugPrint = (String? message, {int? wrapWidth}) {
+      logs.add(message!);
+    };
+    await tester.pumpWidget(
+      const example.NotificationExampleApp(),
+    );
+
+    final TestPointer testPointer = TestPointer(1, PointerDeviceKind.mouse);
+    testPointer.hover(tester.getCenter(find.byType(NestedScrollView)));
+    await tester.sendEventToBinding(testPointer.scroll(const Offset(0.0, 10)));
+    expect(
+      logs,
+      orderedEquals(const <String>[
+        'Scrolling has started',
+        'Scrolling has started',
+        'Scrolling has ended',
+        'Scrolling has ended',
+      ]),
+    );
+    debugPrint = originalDebugPrint;
+  });
+
+  testWidgets('Changing tabs triggers the notification', (WidgetTester tester) async {
+    final DebugPrintCallback originalDebugPrint = debugPrint;
+    final List<String> logs = <String>[];
+    debugPrint = (String? message, {int? wrapWidth}) {
+      logs.add(message!);
+    };
+    await tester.pumpWidget(
+      const example.NotificationExampleApp(),
+    );
+
+    final TestPointer testPointer = TestPointer(1, PointerDeviceKind.mouse);
+    testPointer.hover(tester.getCenter(find.byType(NestedScrollView)));
+    await tester.sendEventToBinding(testPointer.scroll(const Offset(500, 0)));
+    expect(
+      logs,
+      orderedEquals(const <String>[
+        'Scrolling has started',
+        'Scrolling has ended',
+        'Scrolling has started',
+      ]),
+    );
+    await tester.pumpAndSettle();
+    expect(
+      logs,
+      orderedEquals(const <String>[
+        'Scrolling has started',
+        'Scrolling has ended',
+        'Scrolling has started',
+        'Scrolling has ended',
+      ]),
+    );
+
+    await tester.tap(find.text('Months'));
+    await tester.pump();
+
+    expect(
+      logs,
+      orderedEquals(const <String>[
+        'Scrolling has started',
+        'Scrolling has ended',
+        'Scrolling has started',
+        'Scrolling has ended',
+        'Scrolling has started',
+      ]),
+    );
+
+    await tester.pumpAndSettle();
+
+    expect(
+      logs,
+      orderedEquals(const <String>[
+        'Scrolling has started',
+        'Scrolling has ended',
+        'Scrolling has started',
+        'Scrolling has ended',
+        'Scrolling has started',
+        'Scrolling has ended',
+      ]),
+    );
+
+    debugPrint = originalDebugPrint;
+  });
+}