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// 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:ui';
import 'package:flutter/scheduler.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
late SchedulerBinding binding;
setUpAll(() {
WidgetsFlutterBinding.ensureInitialized();
binding = SchedulerBinding.instance;
});
test('PerformanceModeHandler make one request', () async {
final PerformanceModeRequestHandle? requestHandle = binding.requestPerformanceMode(DartPerformanceMode.latency);
expect(requestHandle, isNotNull);
expect(binding.debugGetRequestedPerformanceMode(), equals(DartPerformanceMode.latency));
requestHandle?.dispose();
expect(binding.debugGetRequestedPerformanceMode(), isNull);
});
test('PerformanceModeHandler make conflicting requests', () async {
final PerformanceModeRequestHandle? requestHandle1 = binding.requestPerformanceMode(DartPerformanceMode.latency);
expect(requestHandle1, isNotNull);
final PerformanceModeRequestHandle? requestHandle2 = binding.requestPerformanceMode(DartPerformanceMode.throughput);
expect(requestHandle2, isNull);
expect(binding.debugGetRequestedPerformanceMode(), equals(DartPerformanceMode.latency));
requestHandle1?.dispose();
expect(binding.debugGetRequestedPerformanceMode(), isNull);
});
test('PerformanceModeHandler revert only after last requestor disposed',
() async {
final PerformanceModeRequestHandle? requestHandle1 = binding.requestPerformanceMode(DartPerformanceMode.latency);
expect(requestHandle1, isNotNull);
expect(binding.debugGetRequestedPerformanceMode(), equals(DartPerformanceMode.latency));
final PerformanceModeRequestHandle? requestHandle2 = binding.requestPerformanceMode(DartPerformanceMode.latency);
expect(requestHandle2, isNotNull);
expect(binding.debugGetRequestedPerformanceMode(), equals(DartPerformanceMode.latency));
requestHandle1?.dispose();
expect(binding.debugGetRequestedPerformanceMode(), equals(DartPerformanceMode.latency));
requestHandle2?.dispose();
expect(binding.debugGetRequestedPerformanceMode(), isNull);
});
}