tests/lib/async/catch_errors17_test.dart

// Copyright (c) 2013, 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 'package:expect/async_helper.dart';
import 'package:expect/expect.dart';

import 'catch_errors.dart';

void main() {
  asyncStart();
  Completer done = Completer();

  var events = [];
  late StreamController controller;
  // Test that errors do not cross zone boundaries.
  catchErrors(() {
    catchErrors(() {
      controller = StreamController();
      controller.stream
          .map((x) {
            events.add("map $x");
            return x + 100;
          })
          .transform(
            StreamTransformer.fromHandlers(
              handleError: (e, st, sink) {
                sink.add("error $e");
              },
            ),
          )
          .listen((x) {
            events.add("stream $x");
          });
    }).listen((x) {
      events.add(x);
    });
    controller.add(1);
    controller.addError(2);
    Future.error("outer error");
    controller.close();
  }).listen(
    (x) {
      events.add("outer: $x");
      if (x == "outer error") done.complete(true);
    },
    onDone: () {
      Expect.fail("Unexpected callback");
    },
  );

  done.future.whenComplete(() {
    Timer.run(() {
      Expect.listEquals([
        "map 1",
        "stream 101",
        "stream error 2",
        "outer: outer error",
      ], events);
      asyncEnd();
    });
  });
}