| /* |
| * Copyright (c) 2019, 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. |
| */ |
| /** |
| * @assertion In a migrated library, override checking must check that an |
| * override is consistent with all overridden methods from other migrated |
| * libraries in the super-interface chain, since a legacy library is permitted |
| * to override otherwise incompatible signatures for a method. |
| * |
| * @description Check that if opted-in class implements legacy class, opted-in |
| * field of nullable type can override legacy field. |
| * |
| * @author iarkh@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=non-nullable |
| |
| import "../../Utils/expect.dart"; |
| import "override_checking_legacy_lib.dart"; |
| |
| class A1 implements A { |
| int? aField1 = 0; |
| |
| int? test_return_nullable() => 1; |
| Null test_return_never() => null; |
| int? aField2 = 2; |
| int? aField3 = 3; |
| int? get get_field1 => -1; |
| int? get get_field2 => -2; |
| int? get get_field3 => -3; |
| void set set_field1(int? i) {} |
| void set set_field2(int? i) {} |
| void set set_field3(int? i) {} |
| } |
| |
| class A2 implements A { |
| int? aField1 = null; |
| |
| int? test_return_nullable() => 1; |
| Null test_return_never() => null; |
| int? aField2 = 2; |
| int? aField3 = 3; |
| int? get get_field1 => -1; |
| int? get get_field2 => -2; |
| int? get get_field3 => -3; |
| void set set_field1(int? i) {} |
| void set set_field2(int? i) {} |
| void set set_field3(int? i) {} |
| } |
| |
| class A3 implements A { |
| int? aField1; |
| |
| int? test_return_nullable() => 1; |
| Null test_return_never() => null; |
| int? aField2 = 2; |
| int? aField3 = 3; |
| int? get get_field1 => -1; |
| int? get get_field2 => -2; |
| int? get get_field3 => -3; |
| void set set_field1(int? i) {} |
| void set set_field2(int? i) {} |
| void set set_field3(int? i) {} |
| } |
| |
| main() { |
| A1 a1 = A1(); |
| Expect.equals(0, a1.aField1); |
| a1.aField1 = null; |
| Expect.isNull(a1.aField1); |
| |
| A2 a2 = A2(); |
| Expect.isNull(a2.aField1); |
| a2.aField1 = 4; |
| Expect.equals(4, a2.aField1); |
| |
| A3 a3 = A3(); |
| a3.aField1 = 4; |
| Expect.equals(4, a3.aField1); |
| a3.aField1 = null; |
| Expect.isNull(a3.aField1); |
| } |