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sdk/tests/language_2/implicit_downcast_during_assignment_test.dart
T
Paul Berry a08147a143 Add a language test to validate implicit downcasts during assignments.
Change-Id: If960a713615283952167a7837bc2e5d46a7de9bd
Reviewed-on: https://dart-review.googlesource.com/17042
Reviewed-by: Sigmund Cherem <sigmund@google.com>
2017-10-30 14:58:56 +00:00

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418 B
Dart

// Copyright (c) 2017, 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 {}
class B extends A {}
void main() {
B b;
A a1 = new B();
A a2 = new A();
b = a1; // No error
Expect.throwsTypeError(() {
b = a2;
});
}