54e9f2dbe6
Reverts flutter/flutter#142062 Initiated by: eliasyishak This change reverts the following previous change: Original Description: This PR makes no _behavioral_ changes to executed code, and instead focuses on organization and naming: 1. Almost[^1] anything named `external_ui` is renamed `external_textures` 1. Extended the README to explain the intent of the test, as well as how to run it 1. Renamed `main.dart` and `main_test.dart` to `frame_rate_main.dart` and `frame_rate_test.dart` (we'll add more) 1. Did some refactoring of the test to make it more obvious what is being asserted (i.e. `widgetBuilds` and friends) Given how complex (and in-flux) this directory is, I'm also requesting either John, Jonah or I review any changes. [^1]: Except the name of the `.ci.yaml` task, i.e. `name: Linux_pixel_7pro external_ui_integration_test` because I'm apparently not able to change that without creating a new task as `bringup: true` and playing a bit of a dance. Maybe that's worth doing though (in future PRs)?
69 lines
2.7 KiB
Dart
69 lines
2.7 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 'package:flutter_driver/flutter_driver.dart';
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import 'package:test/test.dart' hide TypeMatcher, isInstanceOf;
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final RegExp calibrationRegExp = RegExp('Flutter frame rate is (.*)fps');
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final RegExp statsRegExp = RegExp('Produced: (.*)fps\nConsumed: (.*)fps\nWidget builds: (.*)');
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const Duration samplingTime = Duration(seconds: 8);
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Future<void> main() async {
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group('texture suite', () {
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late FlutterDriver driver;
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setUpAll(() async {
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driver = await FlutterDriver.connect();
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});
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// This test verifies that we can consume texture frames at a rate
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// close to the minimum of the rate at which they are produced
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// and Flutter's frame rate. It also verifies that we do not rebuild the
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// Widget tree during texture consumption. The test starts by measuring
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// Flutter's frame rate.
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test('texture rendering', () async {
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final SerializableFinder fab = find.byValueKey('fab');
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final SerializableFinder summary = find.byValueKey('summary');
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// Wait for calibration to complete and fab to appear.
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await driver.waitFor(fab);
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final String calibrationResult = await driver.getText(summary);
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final Match? matchCalibration = calibrationRegExp.matchAsPrefix(calibrationResult);
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expect(matchCalibration, isNotNull);
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final double flutterFrameRate = double.parse(matchCalibration?.group(1) ?? '0');
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// Texture frame stats at 0.5x Flutter frame rate
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await driver.tap(fab);
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await Future<void>.delayed(samplingTime);
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await driver.tap(fab);
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final String statsSlow = await driver.getText(summary);
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final Match matchSlow = statsRegExp.matchAsPrefix(statsSlow)!;
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expect(matchSlow, isNotNull);
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expect(double.parse(matchSlow.group(1)!), closeTo(flutterFrameRate / 2.0, 5.0));
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expect(double.parse(matchSlow.group(2)!), closeTo(flutterFrameRate / 2.0, 5.0));
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expect(int.parse(matchSlow.group(3)!), 1);
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// Texture frame stats at 2.0x Flutter frame rate
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await driver.tap(fab);
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await Future<void>.delayed(samplingTime);
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await driver.tap(fab);
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final String statsFast = await driver.getText(summary);
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final Match matchFast = statsRegExp.matchAsPrefix(statsFast)!;
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expect(matchFast, isNotNull);
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expect(double.parse(matchFast.group(1)!), closeTo(flutterFrameRate * 2.0, 5.0));
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expect(double.parse(matchFast.group(2)!), closeTo(flutterFrameRate, 10.0));
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expect(int.parse(matchFast.group(3)!), 1);
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}, timeout: Timeout.none);
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tearDownAll(() async {
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driver.close();
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});
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});
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}
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