dart-sdk/tests/language_2/map/null_key_foreach_test.dart
Robert Nystrom fc1b1ecc71 Move files under language_2 into subdirectories.
Change-Id: Idbcc965a27e9ffeedf5e0a1068b019de4193070f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/127745
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
2019-12-11 19:18:00 +00:00

20 lines
532 B
Dart

// 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";
// Regression test for using `null` as a key with `forEach`.
main() {
var x = new Map<int, int>();
x[1] = 2;
x[null] = 1;
int c = 0;
x.forEach((int i, int j) {
c++;
Expect.isTrue(i == null || i is int, 'int or null expected');
});
Expect.equals(2, c);
}