Unhandled exception

[bsutton]

I'm testing the package https://github.com/bsutton/dshell

pub run test_coverage
Precompiling executable... (1.1s)
Precompiled test_coverage:test_coverage.
Found 54 test files.
Generated test-all script in test/.test_coverage.dart. Please make sure it is added to .gitignore.
Unhandled exception:
Tests failed with exit code 255
#0      runTestsAndCollect (package:test_coverage/src/functions.dart:122:5)
<asynchronous suspension>
#1      main (file:///<home>/.pub-cache/hosted/pub.dartlang.org/test_coverage-0.4.3/bin/test_coverage.dart:60:9)
#2      _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:299:32)
#3      _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:168:12)

[yusenD]

have the same question, have you solve the problem?

[BirjuVachhani]

I am too getting this error. Any solution?

[bsutton]

I'm not going to have time to push this but one of the issues is that it doesn't print out errors:
I modified the functions.dart method runTestsAndCollect to output errors which Identified a problem in my unit test code:

Not the code that starts with:
process.stderr

Future<void> runTestsAndCollect(String packageRoot, String port,
    {bool printOutput = false}) async {
  final script = path.join(packageRoot, 'test', '.test_coverage.dart');
  final dartArgs = [
    '--pause-isolates-on-exit',
    '--enable_asserts',
    '--enable-vm-service=$port',
    script
  ];
  final process =
      await Process.start('dart', dartArgs, workingDirectory: packageRoot);
  final serviceUriCompleter = Completer<Uri>();
  process.stdout
      .transform(utf8.decoder)
      .transform(const LineSplitter())
      .listen((line) {
    if (printOutput) print(line);
    if (serviceUriCompleter.isCompleted) return;
    final uri = _extractObservatoryUri(line);
    if (uri != null) {
      serviceUriCompleter.complete(uri);
    } else {
      serviceUriCompleter.completeError(line);
    }
  });

  process.stderr
      .transform(utf8.decoder)
      .transform(const LineSplitter())
      .listen((line) {
    if (printOutput) print(line);
  });

  final serviceUri =
      await serviceUriCompleter.future.catchError((Exception error) {
    process.kill(ProcessSignal.sigkill);
  });

  if (serviceUri == null) {
    throw StateError('Could not run tests with Observatory enabled. '
        'Try setting a different port with --port option.');
  }

  Map<String, Map<int, int>> hitmap;
  try {
    final data = await coverage.collect(serviceUri, true, true, false, {});
    hitmap =
        coverage.createHitmap(data['coverage'] as List<Map<String, dynamic>>);
  } finally {
    // await process.stderr.drain<List<int>>();
  }
  final exitStatus = await process.exitCode;
  if (exitStatus != 0) {
    throw 'Tests failed with exit code $exitStatus';
  }
  final resolver = coverage.Resolver(
    packagesPath: path.join(packageRoot, '.packages'),
  );
  final lcov = coverage.LcovFormatter(
    resolver,
    reportOn: ['lib${path.separator}'],
    basePath: packageRoot,
  );
  final coverageData = await lcov.format(hitmap);
  final coveragePath = path.join(packageRoot, 'coverage');
  final coverageDir = Directory(coveragePath);
  if (!coverageDir.existsSync()) {
    coverageDir.createSync();
  }
  File(path.join(coveragePath, 'lcov.info')).writeAsStringSync(coverageData);
}

[BirjuVachhani]

Interestingly, when I removed all the assertions from my tests. It worked!

[marcossevilla]

hi! any update on this?

[mzdm]

Has anybody found some solution? /cc @marcossevilla