Files
sdk/tests/language/unsorted/cast2_test.dart
T
Robert Nystrom d4154ac6dc Migrate language_2/unsorted to NNBD.
Change-Id: Iad2963c7f9c184b089dc6d15aa4442f58d194bc2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/151983
Reviewed-by: Nicholas Shahan <nshahan@google.com>
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
2020-06-26 18:34:14 +00:00

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765 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);
}