blob: c0d49e5e73d806b6e5d1a3583e449b440592086e [file] [log] [blame]
// Copyright (c) 2012, 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.
// @dart = 2.9
// Regression test for
library first_regression_test;
import 'dart:async';
class DoubleTransformer<T> extends StreamTransformerBase<T, T> {
Stream<T> bind(Stream<T> stream) {
var transformer = new StreamTransformer<T, T>.fromHandlers(
handleData: (T data, EventSink<T> sink) {
return transformer.bind(stream);
main() async {
// This should not crash. Did crash by trying to complete future more
// than once.
await (new Stream.fromIterable([1, 2]).transform(new DoubleTransformer()))