// Copyright 2017 The Chromium 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' show json; import '../base/io.dart' show stdout; import 'watcher.dart'; /// Prints JSON events when running a test in --machine mode. class EventPrinter extends TestWatcher { EventPrinter({StringSink out}) : this._out = out == null ? stdout: out; final StringSink _out; @override void onStartedProcess(ProcessEvent event) { _sendEvent('test.startedProcess', <String, dynamic>{'observatoryUri': event.observatoryUri.toString()}); } void _sendEvent(String name, [dynamic params]) { final Map<String, dynamic> map = <String, dynamic>{ 'event': name}; if (params != null) { map['params'] = params; } _send(map); } void _send(Map<String, dynamic> command) { final String encoded = json.encode(command, toEncodable: _jsonEncodeObject); _out.writeln('\n[$encoded]'); } dynamic _jsonEncodeObject(dynamic object) { if (object is Uri) { return object.toString(); } return object; } }