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packages/quiver/test/collection/delegates/list_test.dart

+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+library quiver.collection.delegates.list_test;
+
+import 'package:quiver/collection.dart';
+import 'package:test/test.dart';
+
+class MyList extends DelegatingList<String> {
+  final List<String> _delegate;
+
+  MyList(this._delegate);
+
+  List<String> get delegate => _delegate;
+}
+
+void main() {
+  group('DelegatingList', () {
+    DelegatingList<String> delegatingList;
+
+    setUp(() {
+      delegatingList = new MyList(['a', 'b', 'cc']);
+    });
+
+    test('[]', () {
+      expect(delegatingList[0], equals('a'));
+      expect(delegatingList[1], equals('b'));
+      expect(delegatingList[2], equals('cc'));
+      expect(() => delegatingList[3], throws);
+    });
+
+    test('[]=', () {
+      delegatingList[0] = 'd';
+      expect(delegatingList, equals(['d', 'b', 'cc']));
+    });
+
+    test('add', () {
+      delegatingList.add('d');
+      expect(delegatingList, equals(['a', 'b', 'cc', 'd']));
+    });
+
+    test('addAll', () {
+      delegatingList.addAll(['d', 'e']);
+      expect(delegatingList, equals(['a', 'b', 'cc', 'd', 'e']));
+    });
+
+    test('asMap', () {
+      expect(delegatingList.asMap(), equals({0: 'a', 1: 'b', 2: 'cc'}));
+    });
+
+    test('clear', () {
+      delegatingList.clear();
+      expect(delegatingList, equals([]));
+    });
+
+    test('fillRange', () {
+      delegatingList.fillRange(0, 2);
+      expect(delegatingList, equals([null, null, 'cc']));
+      delegatingList.fillRange(0, 2, 'd');
+      expect(delegatingList, equals(['d', 'd', 'cc']));
+    });
+
+    test('getRange', () {
+      expect(delegatingList.getRange(1, 2), equals(['b']));
+      expect(delegatingList.getRange(1, 3), equals(['b', 'cc']));
+    });
+
+    test('indexOf', () {
+      expect(delegatingList.indexOf('b'), equals(1));
+      expect(delegatingList.indexOf('a', 1), equals(-1));
+      expect(delegatingList.indexOf('cc', 1), equals(2));
+    });
+
+    test('insert', () {
+      delegatingList.insert(1, 'd');
+      expect(delegatingList, equals(['a', 'd', 'b', 'cc']));
+    });
+
+    test('insertAll', () {
+      delegatingList.insertAll(1, ['d', 'e']);
+      expect(delegatingList, equals(['a', 'd', 'e', 'b', 'cc']));
+    });
+
+    test('lastIndexOf', () {
+      expect(delegatingList.lastIndexOf('b'), equals(1));
+      expect(delegatingList.lastIndexOf('a', 1), equals(0));
+      expect(delegatingList.lastIndexOf('cc', 1), equals(-1));
+    });
+
+    test('set length', () {
+      delegatingList.length = 2;
+      expect(delegatingList, equals(['a', 'b']));
+    });
+
+    test('remove', () {
+      delegatingList.remove('b');
+      expect(delegatingList, equals(['a', 'cc']));
+    });
+
+    test('removeAt', () {
+      delegatingList.removeAt(1);
+      expect(delegatingList, equals(['a', 'cc']));
+    });
+
+    test('removeLast', () {
+      delegatingList.removeLast();
+      expect(delegatingList, equals(['a', 'b']));
+    });
+
+    test('removeRange', () {
+      delegatingList.removeRange(1, 2);
+      expect(delegatingList, equals(['a', 'cc']));
+    });
+
+    test('removeWhere', () {
+      delegatingList.removeWhere((e) => e.length == 1);
+      expect(delegatingList, equals(['cc']));
+    });
+
+    test('replaceRange', () {
+      delegatingList.replaceRange(1, 2, ['d', 'e']);
+      expect(delegatingList, equals(['a', 'd', 'e', 'cc']));
+    });
+
+    test('retainWhere', () {
+      delegatingList.retainWhere((e) => e.length == 1);
+      expect(delegatingList, equals(['a', 'b']));
+    });
+
+    test('reversed', () {
+      expect(delegatingList.reversed, equals(['cc', 'b', 'a']));
+    });
+
+    test('setAll', () {
+      delegatingList.setAll(1, ['d', 'e']);
+      expect(delegatingList, equals(['a', 'd', 'e']));
+    });
+
+    test('setRange', () {
+      delegatingList.setRange(1, 3, ['d', 'e']);
+      expect(delegatingList, equals(['a', 'd', 'e']));
+    });
+
+    test('sort', () {
+      delegatingList.sort((a, b) => b.codeUnitAt(0) - a.codeUnitAt(0));
+      expect(delegatingList, equals(['cc', 'b', 'a']));
+    });
+
+    test('sublist', () {
+      expect(delegatingList.sublist(1), equals(['b', 'cc']));
+      expect(delegatingList.sublist(1, 2), equals(['b']));
+    });
+  });
+}