Language/Interfaces/Superinterfaces/Inheritance_and_Overriding/not_overriden_members_t03.dart

/*
 * 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 An interface I inherits any members of its superinterfaces that
 * are not overridden by members declared in I.
 * @description Checks that there're no static warnings produced when
 * attempting to access the inherited non-static members of a null variable
 * whose static type is an interface extending another interface that declares
 * those members. This should indirectly prove that they're indeed inherited
 * by the subinterface. Test type aliases
 * @static-clean
 * @author sgrekhov@unopro.ru
 */
// SharedOptions=--enable-experiment=nonfunction-type-aliases
import '../../../../Utils/expect.dart';

abstract class I {
  void m();
  int get gett0r;
  void set sett0r(int v);
  I operator+(int i);
}

typedef IAlias = I;

abstract class C implements IAlias {
}

main() {
  C c = null;

  Expect.throws(() {var x = c.m();}, (e) => e is NoSuchMethodError);
  Expect.throws(() {var x = c.gett0r;}, (e) => e is NoSuchMethodError);
  Expect.throws(() {c.sett0r = 1;;}, (e) => e is NoSuchMethodError);
  Expect.throws(() {c + 1;}, (e) => e is NoSuchMethodError);
}