blob: 1efaafb19e97484f4e2e5fb433b237df404143f2 [file] [log] [blame]
// Copyright (c) 2013, 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) {
bool checkedMode = false;
assert(checkedMode = true);
// Index must be integer and in range.
Expect.throws(() {
l1.insert(-1, 5);
}, (e) => e is RangeError, "negative");
Expect.throws(() {
l1.insert(6, 5);
}, (e) => e is RangeError, "too large");
Expect.throws(() {
l1.insert(null, 5);
});
Expect.throws(() {
l1.insert("1", 5);
});
Expect.throws(() {
l1.insert(1.5, 5);
});
l1.insert(5, 5);
Expect.equals(6, l1.length);
Expect.equals(5, l1[5]);
Expect.equals("[0, 1, 2, 3, 4, 5]", l1.toString());
l1.insert(0, -1);
Expect.equals(7, l1.length);
Expect.equals(-1, l1[0]);
Expect.equals("[-1, 0, 1, 2, 3, 4, 5]", l1.toString());
}
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.throws(() {
l2.insert(2, 5);
}, (e) => e is UnsupportedError, "fixed-length");
// Unmodifiable list.
var l3 = const [0, 1, 2, 3, 4];
Expect.throws(() {
l3.insert(2, 5);
}, (e) => e is UnsupportedError, "unmodifiable");
// Empty list is not special.
var l4 = [];
l4.insert(0, 499);
Expect.equals(1, l4.length);
Expect.equals(499, l4[0]);
}