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Add a basic integration test for the Windows's app startup. In a subsequent change (https://github.com/flutter/flutter/pull/109816), this test will be updated to verify the app's window isn't visible until after the first frame has been drawn. Part of https://github.com/flutter/flutter/issues/41980
67 lines
2.1 KiB
Dart
67 lines
2.1 KiB
Dart
// Copyright 2014 The Flutter 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 'dart:async';
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import 'dart:ui' as ui;
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import 'package:flutter/services.dart';
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import 'package:flutter_driver/driver_extension.dart';
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void drawHelloWorld() {
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final ui.ParagraphStyle style = ui.ParagraphStyle();
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final ui.ParagraphBuilder paragraphBuilder = ui.ParagraphBuilder(style)
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..addText('Hello world');
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final ui.Paragraph paragraph = paragraphBuilder.build();
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paragraph.layout(const ui.ParagraphConstraints(width: 100.0));
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final ui.PictureRecorder recorder = ui.PictureRecorder();
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final ui.Canvas canvas = ui.Canvas(recorder);
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canvas.drawParagraph(paragraph, ui.Offset.zero);
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final ui.Picture picture = recorder.endRecording();
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final ui.SceneBuilder sceneBuilder = ui.SceneBuilder()
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..addPicture(ui.Offset.zero, picture)
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..pop();
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ui.window.render(sceneBuilder.build());
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}
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void main() async {
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// Create a completer to send the result back to the integration test.
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final Completer<String> completer = Completer<String>();
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enableFlutterDriverExtension(handler: (String? message) => completer.future);
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try {
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const MethodChannel methodChannel =
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MethodChannel('tests.flutter.dev/windows_startup_test');
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// TODO(loic-sharma): Make the window invisible until after the first frame.
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// https://github.com/flutter/flutter/issues/41980
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final bool? visible = await methodChannel.invokeMethod('isWindowVisible');
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if (visible == null || visible == false) {
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throw 'Window should be visible at startup';
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}
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ui.PlatformDispatcher.instance.onBeginFrame = (Duration duration) async {
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final bool? visible = await methodChannel.invokeMethod('isWindowVisible');
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if (visible == null || visible == false) {
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throw 'Window should be visible';
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}
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if (!completer.isCompleted) {
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completer.complete('success');
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}
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drawHelloWorld();
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};
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ui.PlatformDispatcher.instance.scheduleFrame();
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} catch (e) {
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completer.completeError(e);
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rethrow;
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}
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}
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