blob: 71d190aa95bbb51bce7ea34b9d99b84a38bc9bbc [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.
// Regression test for
library first_regression_test;
import 'dart:async';
import 'package:unittest/unittest.dart';
class DoubleTransformer<T> implements StreamTransformer<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() {
test("Double event before first", () {
// This should not crash. Did crash by trying to complete future more
// than once.
new Stream.fromIterable([1, 2])
.transform(new DoubleTransformer())
.then(expectAsync((e) {}));