flutter/dev/tracing_tests/test/default_streams_test.dart
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---------

Co-authored-by: Kate Lovett <katelovett@google.com>
Co-authored-by: LongCatIsLooong <31859944+LongCatIsLooong@users.noreply.github.com>
2024-12-19 20:06:21 +00:00

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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:developer' as developer;
import 'package:flutter_test/flutter_test.dart';
import 'package:vm_service/vm_service.dart';
import 'package:vm_service/vm_service_io.dart';
// This test ensures that the engine starts the VM with the timeline streams
// for "Dart", "Embedder", and "GC" recorded from startup.
void main() {
late VmService vmService;
setUpAll(() async {
final developer.ServiceProtocolInfo info = await developer.Service.getInfo();
if (info.serverUri == null) {
fail('This test _must_ be run with --enable-vmservice.');
}
vmService = await vmServiceConnectUri(
'ws://localhost:${info.serverUri!.port}${info.serverUri!.path}ws',
);
});
tearDownAll(() async {
await vmService.dispose();
});
test('Image cache tracing', () async {
final TimelineFlags flags = await vmService.getVMTimelineFlags();
expect(flags.recordedStreams, containsAll(<String>['Dart', 'Embedder', 'GC']));
}, skip: isBrowser); // [intended] uses dart:isolate and io.
}