LibTest/async/Stream/elementAt_A02_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.

/// @assertion Future<T> elementAt(int index)
/// If an error event occurs before the value is found, the future completes
/// with this error.
/// @description Checks that if an error event occurs before the value is found,
/// the future will end with this error.
/// @author kaigorodov

library elementAt_A02_t01;

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

void test(CreateStreamWithErrorsFunction create) {
  for (int k = 0; k < 10; k++) {
    Iterable<int> i = new Iterable<int>.generate(10, (int x) => x);
    Stream<int> s = create(i, isError: (e) => e == k, defVal: 42);
    AsyncExpect.error(k, s.elementAt(k));
  }
}