| // 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 HashMap.from(Map other) |
| /// Creates a [HashMap<K,V>] that contains all key value pairs of [other]. |
| /// @description Checks that created hash map contains all elements of [other]. |
| /// Both empty and non-empty argument maps are tested. |
| /// @author msyabro |
| |
| import "../../../Utils/expect.dart"; |
| import "dart:collection"; |
| |
| check(Map m1, Map m2) { |
| Expect.equals(m1.length, m2.length); |
| m1.forEach((var key, var value) { |
| Expect.isTrue(m2.containsKey(key)); |
| Expect.equals(value, m2[key]); |
| }); |
| } |
| |
| main() { |
| Map m = {"1": 1, "2": 2, "3": 3, "4": 4}; |
| HashMap map = new HashMap.from(m); |
| check(m, map); |
| |
| m = new Map(); |
| map = new HashMap.from(m); |
| Expect.isTrue(map.isEmpty); |
| } |