LibTest/async/Stream/skip_A03_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 Stream<T> skip(int count)
///    Skips the first count data events from this stream.
///    Returns a stream that emits the same events as this stream would
/// if listened to at the same time, except that the first [count]
/// data events are not emitted.
/// The returned stream is done when this stream is.
/// If this stream emits fewer than [count] data events before being done, the
/// returned stream emits no data events.
/// @description Checks that errors in the input stream are propagated to the
/// returned stream.
/// @author a.semenov@unipro.ru

library skip_A03_t01;

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

void test(CreateStreamWithErrorsFunction create) {
  AsyncExpect.events([], [1, 2, 3],
      create([1, 2, 3], isError: (_) => true, defaultValue: 42).skip(0));
  AsyncExpect.events([], [1, 2, 3],
      create([1, 2, 3], isError: (_) => true, defaultValue: 42).skip(1));
  AsyncExpect.events([], [1, 2, 3],
      create([1, 2, 3], isError: (_) => true, defaultValue: 42).skip(10));

  AsyncExpect.events([], [1, 3, 5],
      create<int>([1, 2, 3, 4, 5], isError: (x) => x.isOdd, defaultValue: 42)
          .skip(10));
  AsyncExpect.events([3, 5], [2, 4],
      create<int>([1, 2, 3, 4, 5], isError: (x) => x.isEven, defaultValue: 42)
          .skip(1));
  AsyncExpect.events([5], [2, 4],
      create<int>([1, 2, 3, 4, 5], isError: (x) => x.isEven, defaultValue: 42)
          .skip(2));
}