blob: 27c67d1c9778af14fcf3ce29b66e760424a980a9 [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";
void testListMapCorrespondence(List list, Map map) {
Expect.equals(list.length, map.length);
for (int i = 0; i < list.length; i++) {
Expect.equals(list[i], map[i]);
}
Expect.isNull(map[list.length]);
Expect.isNull(map[-1]);
Iterable keys = map.keys;
Iterable values = map.values;
Expect.isFalse(keys is List);
Expect.isFalse(values is List);
Expect.equals(list.length, keys.length);
Expect.equals(list.length, values.length);
for (int i = 0; i < list.length; i++) {
Expect.equals(i, keys.elementAt(i));
Expect.equals(list[i], values.elementAt(i));
}
int forEachCount = 0;
map.forEach((key, value) {
Expect.equals(forEachCount, key);
Expect.equals(list[key], value);
forEachCount++;
});
for (int i = 0; i < list.length; i++) {
Expect.isTrue(map.containsKey(i));
Expect.isTrue(map.containsValue(list[i]));
}
Expect.isFalse(map.containsKey(-1));
Expect.isFalse(map.containsKey(list.length));
Expect.equals(list.length, forEachCount);
Expect.equals(list.isEmpty, map.isEmpty);
}
void testConstAsMap(List list) {
Map<int, dynamic> map = list.asMap();
testListMapCorrespondence(list, map);
Expect.throwsUnsupportedError(() => map[0] = 499);
Expect.throwsUnsupportedError(() => map.putIfAbsent(0, () => 499));
Expect.throwsUnsupportedError(() => map.clear());
}
void testFixedAsMap(List list) {
testConstAsMap(list);
Map<int, dynamic> map = list.asMap();
if (!list.isEmpty) {
list[0] = 499;
// Check again to make sure the map is backed by the list.
testListMapCorrespondence(list, map);
}
}
void testAsMap(List list) {
testFixedAsMap(list);
Map<int, dynamic> map = list.asMap();
Iterable keys = map.keys;
Iterable values = map.values;
list.add(42);
// Check again to make sure the map is backed by the list and that the
// length is not cached.
testListMapCorrespondence(list, map);
// Also check that the keys and values iterable from the map are backed by
// the list.
Expect.equals(list.length, keys.length);
Expect.equals(values.length, values.length);
}
main() {
testConstAsMap(const [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
testAsMap([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
List list = new List.filled(10, null);
for (int i = 0; i < 10; i++) list[i] = i + 1;
testFixedAsMap(list);
testConstAsMap(const []);
testAsMap([]);
testFixedAsMap(new List.empty());
}