dart-sdk/tests/language/closure/parameter_types_test.dart
Robert Nystrom f205141a42 Migrate language_2/closure to NNBD.
Change-Id: Ib798b9573ee8ec924f87104684934785fadc8189
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/141702
Auto-Submit: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Leaf Petersen <leafp@google.com>
Reviewed-by: Erik Ernst <eernst@google.com>
Reviewed-by: Nicholas Shahan <nshahan@google.com>
Commit-Queue: Bob Nystrom <rnystrom@google.com>
2020-04-02 17:29:25 +00:00

28 lines
616 B
Dart

// Copyright (c) 2012, 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 dart2js, where the optimizer was too aggressive
// about parameter types of closures.
class A {
Function f;
A(this.f);
_do() => f(1);
}
main() {
int invokeCount = 0;
closure(a) {
if (invokeCount++ == 1) {
Expect.isTrue(a is int);
}
}
closure('s');
new A(closure)._do();
Expect.equals(2, invokeCount);
}