LibTest/async/Stream/contains_A03_t03.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<bool> contains(Object needle)
/// If this stream reports an error, the Future will report that error.
/// @description Checks that if needle is found after this stream reports
/// an error, the returned Future completes with error
/// @author a.semenov@unipro.ru

library contains_A03_t03;
import "dart:async";
import "../../../Utils/expect.dart";

void test(CreateStreamWithErrorsFunction create) {
  Error error = new Error();
  Stream s = create([1, 2, error, 3, 4], isError: (e) => e is Error);
  AsyncExpect.error(error, s.contains(4));
}