pkg/vm_service/test/should_pause_on_exit_test.dart

// Copyright (c) 2021, 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.
//
// OtherResources=should_pause_on_exit_lib.dart

import 'dart:async';

import 'package:test/test.dart';
import 'package:vm_service/vm_service.dart';

import 'common/service_test_common.dart';
import 'should_pause_on_exit_lib.dart' as lib;

Future<bool> shouldPauseOnExit(VmService service, IsolateRef isolateRef) async {
  final isolate = await service.getIsolate(isolateRef.id!);
  return isolate.pauseOnExit!;
}

void main([args = const <String>[]]) => IsolateTestHarness(
      'should_pause_on_exit_lib.dart',
      args,
    )
        .hasPausedAtStart()
        .addCustomTest((VmService service, IsolateRef isolateRef) async {
      await service.setIsolatePauseMode(
        isolateRef.id!,
        shouldPauseOnExit: false,
      );
      expect(await shouldPauseOnExit(service, isolateRef), false);
      final completer = Completer<void>();

      final stream = service.onDebugEvent;
      final subscription = stream.listen((Event event) {
        if (event.kind == EventKind.kPauseExit) {
          completer.complete();
        }
      });
      await service.streamListen(EventStreams.kDebug);

      await service.setIsolatePauseMode(
        isolateRef.id!,
        shouldPauseOnExit: true,
      );
      expect(await shouldPauseOnExit(service, isolateRef), true);
      await service.resume(isolateRef.id!);
      await completer.future;
      try {
        await service.resume(isolateRef.id!);
      } on RPCError catch (e) {
        // The server may have already shut down, causing the service connection
        // to be disposed before the resume response is sent.
        if (![
          RPCErrorKind.kConnectionDisposed.code,
          RPCErrorKind.kServerError.code,
        ].contains(e.code)) {
          rethrow;
        }
        // This is expected - ignore it.
      }
      await subscription.cancel();
    }).run(
      pauseOnStart: true,
      pauseOnExit: true,
      testeeMain: lib.main,
    );