pkg/vm_service/test/sigquit_starts_service_test.dart

// Copyright (c) 2023, the Dart project authors.  Please see the AUTHORS file
// for details. 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:test/test.dart';

void runTest(bool withDartDev) {
  test(
    'Displays service URI on SIGQUIT ${withDartDev ? '' : 'with --disable-dart-dev'}',
    () async {
      final process = await Process.start(Platform.resolvedExecutable, [
        if (!withDartDev) '--disable-dart-dev',
        Platform.script
            .resolve('sigquit_starts_service_script.dart')
            .toString(),
      ]);

      final readyCompleter = Completer<void>();
      final completer = Completer<void>();
      late StreamSubscription sub;
      sub = process.stdout.transform(utf8.decoder).listen((e) async {
        if (e.contains('ready') && !readyCompleter.isCompleted) {
          readyCompleter.complete();
        } else if (e.contains('The Dart VM service is listening on')) {
          await sub.cancel();
          completer.complete();
        }
      });

      // Wait for the process to start.
      await readyCompleter.future;
      process.kill(ProcessSignal.sigquit);
      await completer.future;
      process.kill();
    },
    skip: Platform.isWindows,
  );
}

void main() {
  runTest(true);
  runTest(false);
}