tests/dart2js/call_is_function_test.dart

// Copyright (c) 2018, 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';

class A {
  call() {}
}

@pragma('dart2js:noInline')
test(o) => o is Function;

main() {
  Expect.isFalse(test(new A()));
  Expect.isFalse(test(null));
}