blob: dde8c8373ddab66f32d3dbc653ca17d3895574cb [file] [log] [blame]
// 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:convert';
import 'dart:developer' as developer;
import 'dart:isolate' as isolate;
import 'package:flutter/painting.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:vm_service/vm_service.dart';
import 'package:vm_service/vm_service_io.dart';
void main() {
VmService vmService;
String isolateId;
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');
await vmService.setVMTimelineFlags(<String>['Dart']);
isolateId = developer.Service.getIsolateID(isolate.Isolate.current);
// Initialize the image cache.
TestWidgetsFlutterBinding.ensureInitialized();
});
test('Image cache tracing', () async {
final TestImageStreamCompleter completer1 = TestImageStreamCompleter();
PaintingBinding.instance.imageCache.putIfAbsent(
'Test',
() => completer1,
);
PaintingBinding.instance.imageCache.clear();
final Timeline timeline = await vmService.getVMTimeline();
_expectTimelineEvents(
timeline.traceEvents,
<Map<String, dynamic>>[
<String, dynamic>{
'name': 'ImageCache.putIfAbsent',
'args': <String, dynamic>{'key': 'Test', 'isolateId': isolateId}
},
<String, dynamic>{
'name': 'listener',
'args': <String, dynamic>{'parentId': '1', 'isolateId': isolateId}
},
<String, dynamic>{
'name': 'ImageCache.clear',
'args': <String, dynamic>{
'pendingImages': 1,
'keepAliveImages': 0,
'liveImages': 1,
'currentSizeInBytes': 0,
'isolateId': isolateId,
}
},
],
);
}, skip: isBrowser); // uses dart:isolate and io
}
void _expectTimelineEvents(List<TimelineEvent> events, List<Map<String, dynamic>> expected) {
for (final TimelineEvent event in events) {
for (int index = 0; index < expected.length; index += 1) {
if (expected[index]['name'] == event.json['name']) {
final Map<String, dynamic> expectedArgs = expected[index]['args'] as Map<String, dynamic>;
final Map<String, dynamic> args = event.json['args'] as Map<String, dynamic>;
if (_mapsEqual(expectedArgs, args)) {
expected.removeAt(index);
}
}
}
}
if (expected.isNotEmpty) {
final String encodedEvents = jsonEncode(events);
fail('Timeline did not contain expected events: $expected\nactual: $encodedEvents');
}
}
bool _mapsEqual(Map<String, dynamic> expectedArgs, Map<String, dynamic> args) {
for (final String key in expectedArgs.keys) {
if (expectedArgs[key] != args[key]) {
return false;
}
}
return true;
}
class TestImageStreamCompleter extends ImageStreamCompleter {}