| // 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. |
| |
| import "package:expect/expect.dart"; |
| import 'dart:collection'; |
| |
| class MyList extends ListBase { |
| List list; |
| MyList(this.list); |
| |
| get length => list.length; |
| set length(val) { |
| list.length = val; |
| } |
| |
| operator [](index) => list[index]; |
| operator []=(index, val) => list[index] = val; |
| |
| String toString() => "[" + join(", ") + "]"; |
| } |
| |
| // l1 must be a modifiable list with 5 elements from 0 to 4. |
| void testModifiableList(l1) { |
| // Index must be integer and in range. |
| Expect.throwsRangeError(() => l1.removeAt(-1), "negative"); |
| Expect.throwsRangeError(() => l1.removeAt(5), "too large"); |
| Expect.throwsArgumentError(() => l1.removeAt(null), "too large"); |
| |
| Expect.equals(2, l1.removeAt(2), "l1-remove2"); |
| Expect.equals(1, l1[1], "l1-1[1]"); |
| |
| Expect.equals(3, l1[2], "l1-1[2]"); |
| Expect.equals(4, l1[3], "l1-1[3]"); |
| Expect.equals(4, l1.length, "length-1"); |
| |
| Expect.equals(0, l1.removeAt(0), "l1-remove0"); |
| Expect.equals(1, l1[0], "l1-2[0]"); |
| Expect.equals(3, l1[1], "l1-2[1]"); |
| Expect.equals(4, l1[2], "l1-2[2]"); |
| Expect.equals(3, l1.length, "length-2"); |
| } |
| |
| void main() { |
| // Normal modifiable list. |
| testModifiableList([0, 1, 2, 3, 4]); |
| testModifiableList(new MyList([0, 1, 2, 3, 4])); |
| |
| // Fixed size list. |
| var l2 = new List(5); |
| for (var i = 0; i < 5; i++) l2[i] = i; |
| Expect.throwsUnsupportedError(() => l2.removeAt(2), "fixed-length"); |
| |
| // Unmodifiable list. |
| var l3 = const [0, 1, 2, 3, 4]; |
| Expect.throwsUnsupportedError(() => l3.removeAt(2), "unmodifiable"); |
| |
| // Empty list is not special. |
| var l4 = []; |
| Expect.throwsRangeError(() => l4.removeAt(0), "empty"); |
| } |