| // 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 "dart:typed_data"; |
| import "package:expect/expect.dart"; |
| |
| // Tests of List.copyRange. |
| |
| void main() { |
| var list = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; |
| |
| List.copyRange(list, 3, [10, 11, 12, 13], 0, 4); |
| |
| Expect.listEquals([0, 1, 2, 10, 11, 12, 13, 7, 8, 9], list); |
| |
| List.copyRange(list, 6, [20, 21, 22, 23], 1, 3); |
| |
| Expect.listEquals([0, 1, 2, 10, 11, 12, 21, 22, 8, 9], list); |
| |
| // Empty ranges won't change anything. |
| List.copyRange(list, 7, [30, 31, 32, 33], 3, 3); |
| List.copyRange(list, list.length, [30, 31, 32, 33], 3, 3); |
| |
| Expect.listEquals([0, 1, 2, 10, 11, 12, 21, 22, 8, 9], list); |
| |
| List.copyRange(list, 0, [40, 41, 42, 43], 0, 2); |
| |
| Expect.listEquals([40, 41, 2, 10, 11, 12, 21, 22, 8, 9], list); |
| |
| // Overlapping self-ranges |
| |
| List.copyRange(list, 2, list, 0, 4); |
| |
| Expect.listEquals([40, 41, 40, 41, 2, 10, 21, 22, 8, 9], list); |
| |
| List.copyRange(list, 4, list, 6, 10); |
| |
| Expect.listEquals([40, 41, 40, 41, 21, 22, 8, 9, 8, 9], list); |
| |
| // Invalid source ranges. |
| |
| Expect.throwsArgumentError(() { |
| List.copyRange(list, 0, [0, 0, 0], -1, 1); |
| }); |
| |
| Expect.throwsArgumentError(() { |
| List.copyRange(list, 0, [0, 0, 0], 0, 4); |
| }); |
| |
| Expect.throwsArgumentError(() { |
| List.copyRange(list, 0, [0, 0, 0], 2, 1); |
| }); |
| |
| Expect.throwsArgumentError(() { |
| List.copyRange(list, 0, [], 1, 1); |
| }); |
| |
| // Invalid target range. |
| Expect.throwsArgumentError(() { |
| List.copyRange(list, list.length - 3, [0, 0, 0, 0], 0, 4); |
| }); |
| |
| // Invalid target range. |
| Expect.throwsArgumentError(() { |
| List.copyRange(list, list.length + 1, [0, 0, 0, 0], 0, 0); |
| }); |
| |
| // Argument errors throw before changing anything, so list is unchanged. |
| Expect.listEquals([40, 41, 40, 41, 21, 22, 8, 9, 8, 9], list); |
| |
| // Omitting start/end (or passing null). |
| List.copyRange(list, 2, [1, 2, 3]); |
| |
| Expect.listEquals([40, 41, 1, 2, 3, 22, 8, 9, 8, 9], list); |
| |
| List.copyRange(list, 5, [1, 2, 3], 1); |
| |
| Expect.listEquals([40, 41, 1, 2, 3, 2, 3, 9, 8, 9], list); |
| |
| // Other kinds of lists. |
| var listu8 = new Uint8List.fromList([1, 2, 3, 4]); |
| var list16 = new Int16List.fromList([11, 12, -13, -14]); |
| List.copyRange(listu8, 2, list16, 1, 3); |
| Expect.listEquals([1, 2, 12, 256 - 13], listu8); |
| |
| var clist = const <int>[1, 2, 3, 4]; |
| var flist = new List<int>(4)..setAll(0, [10, 11, 12, 13]); |
| List.copyRange(flist, 1, clist, 1, 3); |
| Expect.listEquals([10, 2, 3, 13], flist); |
| |
| // Invoking with a type parameter that is a supertype of the list types |
| // is valid and useful. |
| List<int> ilist = <int>[1, 2, 3, 4]; |
| List<num> nlist = <num>[11, 12, 13, 14]; |
| |
| List.copyRange<num>(ilist, 1, nlist, 1, 3); |
| Expect.listEquals([1, 12, 13, 4], ilist); |
| List.copyRange<Object>(ilist, 1, nlist, 0, 2); |
| Expect.listEquals([1, 11, 12, 4], ilist); |
| List.copyRange<dynamic>(ilist, 1, nlist, 2, 4); |
| Expect.listEquals([1, 13, 14, 4], ilist); |
| |
| var d = new D(); |
| List<B> bdlist = <B>[d]; |
| List<C> cdlist = <C>[null]; |
| List.copyRange<Object>(cdlist, 0, bdlist, 0, 1); |
| Expect.identical(d, cdlist[0]); |
| } |
| |
| class B {} |
| |
| class C {} |
| |
| class D implements B, C {} |