LibTest/async/Stream/drain_A01_t01.test.dart

// Copyright (c) 2011, 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

/// @assertion Future drain([futureValue])
///    Discards all data on the stream, but signals when it's done or an error
/// occurred.
///    When subscribing using drain, cancelOnError will be true.
/// This means that the future will complete with the first error on the stream
/// and then cancel the subscription.
/// @description Checks that the future will complete with the first error
/// on the stream.
/// @author kaigorodov

library drain_A01_t01;
import "dart:async";
import "../../../Utils/expect.dart";

void test(CreateStreamWithErrorsFunction create) {
  Stream<int> s = create([1,2,3,4,5], isError:(e) => true);
  AsyncExpect.error(1, s.drain());
}