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sdk/tests/language_2/unsorted/cast2_test.dart
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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

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764 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.
// Dart test program for constructors and initializers.
import "package:expect/expect.dart";
// Test 'expression as Type' casts.
class C {
final int foo = 42;
int val = 0;
void inc() {
++val;
}
}
class D extends C {
final int bar = 37;
}
main() {
C oc = new C();
D od = new D();
Expect.throwsNoSuchMethodError(() => (oc as dynamic).bar);
// Casts should always evaluate the left-hand side, if only for its effects.
oc.inc() as dynamic;
Expect.equals(1, oc.val);
oc.inc() as Object;
Expect.equals(2, oc.val);
}