Chain.capture() not working in tests

[mleonhard]

Dear Dart-lang Maintainers,
Thank you for your hard work making Dart. It is very useful to me. Here is test/unit/truncated_trace_test.dart which demonstrates a problem in my Dart application:

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

class CustomException implements Exception {
  final String details;

  CustomException(dynamic e, StackTrace trace)
      : this.details = 'CustomException: $e\n'
            'Stack Trace:\n${Chain.forTrace(trace).terse}';

  @override
  String toString() => 'BEGIN\n$details\nEND\n';
}

Future<void> function2() async {
  try {
    throw new Exception('exception1');
  } catch (e, trace) {
    throw new CustomException(e, trace);
  }
}

Future<void> function1() async => await function2();

void main() {
  Chain.capture(() {
    test('test function1()', () async {
      await function1();
    });
  });
}

Here is the output of running the test:

00:01 +0 -1: test function1() [E]
  BEGIN
  CustomException: Exception: exception1
  Stack Trace:
  test/unit/truncated_trace_test.dart 17:5          function2
  ===== asynchronous gap ===========================
  dart:async                                        _asyncThenWrapperHelper
  package:test_api/src/backend/declarer.dart        Declarer.test.<fn>.<fn>.<fn>
  package:test_api/src/backend/invoker.dart 249:15  Invoker.waitForOutstandingCallbacks.<fn>
  ===== asynchronous gap ===========================
  dart:async                                        new Future
  package:test_api/src/backend/invoker.dart 398:11  Invoker._onRun.<fn>.<fn>.<fn>
  
  END
  
  test/unit/truncated_trace_test.dart 19:5  function2
  ===== asynchronous gap ===========================
  dart:async                                _AsyncAwaitCompleter.completeError
  test/unit/truncated_trace_test.dart       function2
  
00:01 +0 -1: Some tests failed.

The problem is that function1 and main are missing from the stack trace. So far this seems to happen only in tests. Is there any way to get the missing entries to show? I would appreciate any help you can give on this issue.

Sincerely,
Michael

More info:

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