// 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 final Iterable<K> keys
/// The keys of this.
/// @description Checks that an Iterable containing all keys is returned.
/// @author msyabro

library keys_A01_t01;
 
import "../../../Utils/expect.dart";

test(Map create([Map content])) {
  Map map = create();

  Iterable a = map.keys;
  Expect.isTrue(a.length == 0);
  
  map["1"] = 1;
  map["2"] = 2;
  
  Iterable arr = map.keys;
  Expect.isTrue(arr.length == 2);
  Expect.isTrue(arr.contains("1"));
  Expect.isTrue(arr.contains("2"));
  
  map.clear();
  a = map.keys;
  Expect.isTrue(a.length == 0);
}