OLD | NEW |
(Empty) | |
| 1 // Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. |
| 4 |
| 5 import 'package:collection/collection.dart'; |
| 6 import 'package:test/test.dart'; |
| 7 |
| 8 import '../unmodifiable_collection_test.dart' as common; |
| 9 |
| 10 void main() { |
| 11 var list1 = [1, 2, 3]; |
| 12 var list2 = [4, 5, 6]; |
| 13 var list3 = [7, 8, 9]; |
| 14 var concat = []..addAll(list1)..addAll(list2)..addAll(list3); |
| 15 |
| 16 // In every way possible this should test the same as an UnmodifiableListView. |
| 17 common.testUnmodifiableList( |
| 18 concat, new CombinedListView([list1, list2, list3]), 'combineLists'); |
| 19 |
| 20 common.testUnmodifiableList(concat, |
| 21 new CombinedListView([list1, [], list2, [], list3, []]), 'combineLists'); |
| 22 |
| 23 test('should function as an empty list when no lists are passed', () { |
| 24 var empty = new CombinedListView([]); |
| 25 expect(empty, isEmpty); |
| 26 expect(empty.length, 0); |
| 27 expect(() => empty[0], throwsRangeError); |
| 28 }); |
| 29 |
| 30 test('should function as an empty list when only empty lists are passed', () { |
| 31 var empty = new CombinedListView([[], [], []]); |
| 32 expect(empty, isEmpty); |
| 33 expect(empty.length, 0); |
| 34 expect(() => empty[0], throwsRangeError); |
| 35 }); |
| 36 |
| 37 test('should reflect underlying changes back to the combined list', () { |
| 38 var backing1 = <int>[]; |
| 39 var backing2 = <int>[]; |
| 40 var combined = new CombinedListView([backing1, backing2]); |
| 41 expect(combined, isEmpty); |
| 42 backing1.addAll(list1); |
| 43 expect(combined, list1); |
| 44 backing2.addAll(list2); |
| 45 expect(combined, backing1.toList()..addAll(backing2)); |
| 46 }); |
| 47 |
| 48 test('should reflect underlying changes from the list of lists', () { |
| 49 var listOfLists = <List<int>>[]; |
| 50 var combined = new CombinedListView(listOfLists); |
| 51 expect(combined, isEmpty); |
| 52 listOfLists.add(list1); |
| 53 expect(combined, list1); |
| 54 listOfLists.add(list2); |
| 55 expect(combined, []..addAll(list1)..addAll(list2)); |
| 56 listOfLists.clear(); |
| 57 expect(combined, isEmpty); |
| 58 }); |
| 59 |
| 60 test('should reflect underlying changes with a single list', () { |
| 61 var backing1 = <int>[]; |
| 62 var combined = new CombinedListView([backing1]); |
| 63 expect(combined, isEmpty); |
| 64 backing1.addAll(list1); |
| 65 expect(combined, list1); |
| 66 }); |
| 67 } |
OLD | NEW |