| // Copyright (c) 2018, 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. |
| |
| import "package:expect/expect.dart"; |
| import 'dart:collection'; |
| import 'dart:convert' show json; |
| |
| var baseMap = const {"x": 0, "y": 1}; |
| |
| void main() { |
| var entry = new MapEntry<int, int>(1, 2); |
| Expect.isTrue(entry is MapEntry<int, int>); |
| Expect.isTrue(entry is! MapEntry<String, String>); |
| Expect.isTrue(entry is! MapEntry<Null, Null>); |
| Expect.equals(1, entry.key); |
| Expect.equals(2, entry.value); |
| Expect.equals("MapEntry(1: 2)", "$entry"); |
| dynamic dynEntry = entry; |
| Expect.throwsNoSuchMethodError(() { |
| dynEntry.key = 0; |
| }, "key not settable"); |
| Expect.throwsNoSuchMethodError(() { |
| dynEntry.value = 0; |
| }, "value not settable"); |
| |
| checkEntries(baseMap, baseMap); |
| checkEntries(baseMap, new Map<String, Object>.unmodifiable(baseMap)); |
| checkMap({"x": 0, "y": 1}); |
| checkMap(new Map<String, dynamic>.from(baseMap)); |
| checkMap(new HashMap<String, dynamic>.from(baseMap)); |
| checkMap(new LinkedHashMap<String, dynamic>.from(baseMap)); |
| checkMap(new SplayTreeMap<String, dynamic>.from(baseMap)); |
| checkMap(json.decode('{"x":0,"y":1}')); |
| } |
| |
| void checkMap(Map<String, dynamic> map) { |
| checkEntries(baseMap, map); |
| map.addEntries([new MapEntry<String, dynamic>("z", 2)]); |
| checkEntries({"x": 0, "y": 1, "z": 2}, map); |
| map.addEntries(<MapEntry<String, dynamic>>[ |
| new MapEntry("y", 11), |
| new MapEntry("v", 3), |
| new MapEntry("w", 4) |
| ]); |
| checkEntries({"v": 3, "w": 4, "x": 0, "y": 11, "z": 2}, map); |
| |
| var valueMap = |
| map.map<int, String>((key, value) => new MapEntry(value as int, key)); |
| checkEntries({0: "x", 2: "z", 3: "v", 4: "w", 11: "y"}, valueMap); |
| } |
| |
| void checkEntries(Map expected, Map map) { |
| int byKey(MapEntry e1, MapEntry e2) => e1.key.compareTo(e2.key); |
| Expect.equals(expected.length, map.entries.length); |
| var sorted = map.entries.toList()..sort(byKey); |
| Expect.equals(expected.length, sorted.length); |
| var expectedEntries = expected.entries.toList(); |
| for (int i = 0; i < sorted.length; i++) { |
| Expect.equals(expectedEntries[i].key, sorted[i].key); |
| Expect.equals(expectedEntries[i].value, sorted[i].value); |
| } |
| } |