tests/lib/async/catch_errors26_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;
  Stream stream;
  // Test `StreamController.broadcast` streams.
  catchErrors(() {
    catchErrors(() {
          controller = StreamController.broadcast();

          // Listen to the stream from the inner zone.
          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);
        })
        .asFuture()
        .then((_) {
          Expect.fail("Unexpected callback");
        });

    // Listen to the stream from the outer zone.
    controller.stream.listen(
      (x) {
        events.add("stream2 $x");
      },
      onError: (x) {
        events.add("stream2 error $x");
      },
    );

    // Feed the controller.
    controller.add(1);
    controller.addError("inner stream");
    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(() {
    // Give handlers time to run.
    Timer.run(() {
      Expect.listEquals([
        "map 1",
        "stream 101",
        "stream2 1",
        "stream error inner stream",
        "stream2 error inner stream",
        "outer: outer error",
      ], events);
      asyncEnd();
    });
  });
}