run_machine_concurrent_hot_reload.dart 5.8 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
// Copyright (c) 2018 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:async';
import 'dart:convert';
import 'dart:io';

import 'package:path/path.dart' as path;
import 'package:vm_service_client/vm_service_client.dart';

import 'package:flutter_devicelab/framework/adb.dart';
import 'package:flutter_devicelab/framework/framework.dart';
import 'package:flutter_devicelab/framework/utils.dart';

void main() {
  Map<String, dynamic> parseFlutterResponse(String line) {
    if (line.startsWith('[') && line.endsWith(']')) {
      try {
20
        return json.decode(line)[0];
21 22 23 24 25 26 27 28 29
      } catch (e) {
        // Not valid JSON, so likely some other output that was surrounded by [brackets]
        return null;
      }
    }
    return null;
  }

  Stream<String> transformToLines(Stream<List<int>> byteStream) {
30
    return byteStream.transform(utf8.decoder).transform(const LineSplitter());
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101
  }

  task(() async {
    int vmServicePort;
    String appId;

    final Device device = await devices.workingDevice;
    await device.unlock();
    final Directory appDir =
        dir(path.join(flutterDirectory.path, 'dev/integration_tests/ui'));
    await inDirectory(appDir, () async {
      final Completer<Null> ready = new Completer<Null>();
      bool ok;
      print('run: starting...');
      final Process run = await startProcess(
        path.join(flutterDirectory.path, 'bin', 'flutter'),
        <String>[
          'run',
          '--machine',
          '--verbose',
          '-d',
          device.deviceId,
          'lib/commands.dart'
        ],
      );
      final StreamController<String> stdout =
          new StreamController<String>.broadcast();
      transformToLines(run.stdout).listen((String line) {
        print('run:stdout: $line');
        stdout.add(line);
        final dynamic json = parseFlutterResponse(line);
        if (json != null && json['event'] == 'app.debugPort') {
          vmServicePort = Uri.parse(json['params']['wsUri']).port;
          print('service protocol connection available at port $vmServicePort');
        } else if (json != null && json['event'] == 'app.started') {
          appId = json['params']['appId'];
          print('run: ready!');
          ready.complete();
          ok ??= true;
        }
      });
      transformToLines(run.stderr).listen((String line) {
        stderr.writeln('run:stderr: $line');
      });
      run.exitCode.then((int exitCode) {
        ok = false;
      });
      await Future.any<dynamic>(<Future<dynamic>>[ready.future, run.exitCode]);
      if (!ok)
        throw 'Failed to run test app.';

      final VMServiceClient client =
          new VMServiceClient.connect('ws://localhost:$vmServicePort/ws');

      int id = 1;
      Future<Map<String, dynamic>> sendRequest(
          String method, dynamic params) async {
        final int requestId = id++;
        final Completer<Map<String, dynamic>> response =
            new Completer<Map<String, dynamic>>();
        final StreamSubscription<String> responseSubscription =
            stdout.stream.listen((String line) {
          final Map<String, dynamic> json = parseFlutterResponse(line);
          if (json != null && json['id'] == requestId)
            response.complete(json);
        });
        final Map<String, dynamic> req = <String, dynamic>{
          'id': requestId,
          'method': method,
          'params': params
        };
102 103 104
        final String jsonEncoded = json.encode(<Map<String, dynamic>>[req]);
        print('run:stdin: $jsonEncoded');
        run.stdin.writeln(jsonEncoded);
105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155
        final Map<String, dynamic> result = await response.future;
        responseSubscription.cancel();
        return result;
      }

      print('test: sending two hot reloads...');
      final Future<dynamic> hotReload1 = sendRequest('app.restart',
          <String, dynamic>{'appId': appId, 'fullRestart': false});
      final Future<dynamic> hotReload2 = sendRequest('app.restart',
          <String, dynamic>{'appId': appId, 'fullRestart': false});
      final Future<List<dynamic>> reloadRequests =
          Future.wait<dynamic>(<Future<dynamic>>[hotReload1, hotReload2]);
      final dynamic results = await Future
          .any<dynamic>(<Future<dynamic>>[run.exitCode, reloadRequests]);

      if (!ok)
        throw 'App crashed during hot reloads.';

      final List<dynamic> responses = results;
      final List<dynamic> errorResponses =
          responses.where((dynamic r) => r['error'] != null).toList();
      final List<dynamic> successResponses = responses
          .where((dynamic r) =>
              r['error'] == null &&
              r['result'] != null &&
              r['result']['code'] == 0)
          .toList();

      if (errorResponses.length != 1)
        throw 'Did not receive the expected (exactly one) hot reload error response.';
      final String errorMessage = errorResponses.first['error'];
      if (!errorMessage.contains('in progress'))
        throw 'Error response was not that hot reload was in progress.';
      if (successResponses.length != 1)
        throw 'Did not receive the expected (exactly one) successful hot reload response.';

      final dynamic hotReload3 = await sendRequest('app.restart',
          <String, dynamic>{'appId': appId, 'fullRestart': false});
      if (hotReload3['error'] != null)
        throw 'Received an error response from a hot reload after all other hot reloads had completed.';

      sendRequest('app.stop', <String, dynamic>{'appId': appId});
      final int result = await run.exitCode;
      if (result != 0)
        throw 'Received unexpected exit code $result from run process.';
      print('test: validating that the app has in fact closed...');
      await client.done.timeout(const Duration(seconds: 5));
    });
    return new TaskResult.success(null);
  });
}