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https://github.com/flutter/flutter
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91bd9bc4f8
* delay taking screenshot to allow GPU thread to render the frame * address comments
47 lines
1.5 KiB
Dart
47 lines
1.5 KiB
Dart
// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter_driver/flutter_driver.dart';
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import 'package:image/image.dart';
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import 'package:test/test.dart';
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void main() {
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group('FlutterDriver', () {
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FlutterDriver driver;
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setUpAll(() async {
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driver = await FlutterDriver.connect();
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});
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tearDownAll(() async {
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await driver.close();
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});
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test('should take screenshot', () async {
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final SerializableFinder toggleBtn = find.byValueKey('toggle');
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// Cards use a magic background color that we look for in the screenshots.
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final Matcher cardsAreVisible = contains(0xff0201ff);
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await driver.waitFor(toggleBtn);
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bool cardsShouldBeVisible = false;
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Image imageBefore = decodePng(await driver.screenshot());
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for (int i = 0; i < 10; i += 1) {
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await driver.tap(toggleBtn);
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cardsShouldBeVisible = !cardsShouldBeVisible;
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final Image imageAfter = decodePng(await driver.screenshot());
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if (cardsShouldBeVisible) {
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expect(imageBefore.data, isNot(cardsAreVisible));
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expect(imageAfter.data, cardsAreVisible);
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} else {
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expect(imageBefore.data, cardsAreVisible);
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expect(imageAfter.data, isNot(cardsAreVisible));
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}
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imageBefore = imageAfter;
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}
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}, timeout: const Timeout(const Duration(minutes: 2)));
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});
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}
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