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Side by Side Diff: tests/language_strong/covariant_subtyping_unsafe_call2_test.dart

Issue 2725563003: Add some tests for calls with checks in strong mode. (Closed)
Patch Set: Created 3 years, 9 months ago
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1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 import 'package:expect/expect.dart'; 4 import 'package:expect/expect.dart';
5 5
6 class Implementation { 6 class Implementation {
7 method(int x) {} 7 dynamic method(int x) {}
8 } 8 }
9 9
10 abstract class Interface<T> { 10 abstract class Interface<T> {
11 method(T x); 11 dynamic method(T x);
12 } 12 }
13 13
14 class Subclass extends Implementation implements Interface<int> {} 14 class Subclass extends Implementation implements Interface<int> {}
15 15
16 main() { 16 main() {
17 Subclass subclass = new Subclass(); 17 Subclass subclass = new Subclass();
18 Interface<int> intInterface = subclass; 18 Interface<int> intInterface = subclass;
19 Interface<num> numInterface = intInterface; 19 Interface<num> numInterface = intInterface;
20 Expect.throws(() => numInterface.method(2.5)); 20 Expect.throws(() => numInterface.method(2.5));
21 } 21 }
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