flutter/examples/api/test/material/text_button/text_button.0_test.dart
Hans Muller 52961f761f
Updated the smiley TextButton example again (#144630)
Improved the smiley image TextButton example a little. Handling the case where the `Future.delayed` object that represents the button's one second long action is superseded by a second button press that triggers a new one-second action. This does complicate the example - just a little - but it's a little more robust. In case someone copy-and-pastes the code.

The TextButton example was recently updated: https://github.com/flutter/flutter/pull/144583
2024-03-05 20:57:02 +00:00

96 lines
3.6 KiB
Dart

// 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 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter_api_samples/material/text_button/text_button.0.dart' as example;
import 'package:flutter_test/flutter_test.dart';
void main() {
// The app being tested loads images via HTTP which the test
// framework defeats by default.
setUpAll(() {
HttpOverrides.global = null;
});
testWidgets('TextButtonExample smoke test', (WidgetTester tester) async {
await tester.pumpWidget(const example.TextButtonExampleApp());
await tester.pumpAndSettle();
await tester.tap(find.widgetWithText(TextButton, 'Enabled'));
await tester.pumpAndSettle();
await tester.tap(find.widgetWithText(TextButton, 'Disabled'));
await tester.pumpAndSettle();
// TextButton.icon buttons are _TextButtonWithIcons rather than TextButtons.
// For the purposes of this test, just tapping in the right place is OK.
await tester.tap(find.text('TextButton.icon #1'));
await tester.pumpAndSettle();
await tester.tap(find.text('TextButton.icon #2'));
await tester.pumpAndSettle();
await tester.tap(find.widgetWithText(TextButton, 'TextButton #3'));
await tester.pumpAndSettle();
await tester.tap(find.widgetWithText(TextButton, 'TextButton #4'));
await tester.pumpAndSettle();
await tester.tap(find.widgetWithText(TextButton, 'TextButton #5'));
await tester.pumpAndSettle();
await tester.tap(find.widgetWithText(TextButton, 'TextButton #6'));
await tester.pumpAndSettle();
await tester.tap(find.widgetWithText(TextButton, 'TextButton #7'));
await tester.pumpAndSettle();
await tester.tap(find.widgetWithText(TextButton, 'TextButton #8'));
await tester.pumpAndSettle();
final Finder smileyButton = find.byType(TextButton).last;
await tester.tap(smileyButton);
await tester.pump();
String smileyButtonImageUrl() {
final AnimatedContainer container = tester.widget<AnimatedContainer>(
find.descendant(of: smileyButton, matching: find.byType(AnimatedContainer)),
);
final BoxDecoration decoration = container.decoration! as BoxDecoration;
final NetworkImage image = decoration.image!.image as NetworkImage;
return image.url;
}
// The smiley button's onPressed method changes the button image
// for one second to simulate a long action running. The button's
// image changes while the action is running.
expect(smileyButtonImageUrl().endsWith('text_button_nhu_end.png'), isTrue);
await tester.pump(const Duration(seconds: 1));
expect(smileyButtonImageUrl().endsWith('text_button_nhu_default.png'), isTrue);
// Pressing the smiley button while the one second action is
// underway starts a new one section action. The button's image
// doesn't change until the second action has finished.
await tester.tap(smileyButton);
await tester.pump(const Duration(milliseconds: 500));
expect(smileyButtonImageUrl().endsWith('text_button_nhu_end.png'), isTrue);
await tester.tap(smileyButton); // Second button press.
await tester.pump(const Duration(milliseconds: 500));
expect(smileyButtonImageUrl().endsWith('text_button_nhu_end.png'), isTrue);
await tester.pump(const Duration(milliseconds: 500));
expect(smileyButtonImageUrl().endsWith('text_button_nhu_default.png'), isTrue);
await tester.tap(find.byType(Switch).at(0)); // Dark Mode Switch
await tester.pumpAndSettle();
await tester.tap(find.byType(Switch).at(1)); // RTL Text Switch
await tester.pumpAndSettle();
});
}