LibTest/async/Stream/map_A04_t01.test.dart

// Copyright (c) 2016, 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<S> map<S>(S convert(T event))
/// The returned stream is a broadcast stream if this stream is.
///
/// @description Checks that the returned stream is a broadcast stream
/// if source stream is.
/// @author a.semenov@unipro.ru

library map_A04_t01;
import "dart:async";
import "../../../Utils/expect.dart";

void check<T>(Stream<T> stream, dynamic convert(T event)) {
  Expect.equals(stream.isBroadcast, stream.map(convert).isBroadcast);
}

void test(CreateStreamFunction create) {

  check(create([]), (_) => null);
  check(create([]).asBroadcastStream(), (_) => null);

  check(create([1,2,3,4,5]), (_) => null);
  check(create([1,2,3,4,5]).asBroadcastStream(), (_) => null);

  check(create([]), (e) => e);
  check(create([]).asBroadcastStream(), (e) => e);

  check(create([1,2,3,4,5]), (e) => e);
  check(create([1,2,3,4,5]).asBroadcastStream(), (e) => e);

  check(create([1,2,3,4,5]), (e) => e.toString());
  check(create([1,2,3,4,5]).asBroadcastStream(), (e) => e.toString());
}