Language/Expressions/Assignment/super_assignment_failed_t02.dart

// Copyright (c) 2016, 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 Evaluation of an assignment of the form super.v = e proceeds as
 * follows:
 * Let g be the method currently executing, and let C be the class in which
 * g was looked up. Let Sdynamic be the superclass of C.
 * ...
 * If the setter lookup has failed, then a new instance im of the predefined
 * class Invocation is created, such that :
 *  • im.isSetter evaluates to true.
 *  • im.memberName evaluates to the symbol v=.
 *  • im.positionalArguments evaluates to an immutable list with the same values
 *    as [o].
 *  • im.namedArguments evaluates to the value of const {}.
 *  Then the method noSuchMethod() is looked up in Sdynamic and invoked
 *  with argument im.  However, if the implementation found cannot be invoked
 *  with a single positional argument, the implementation of noSuchMethod()
 *  in class Object is invoked on this
 * @description Checks that it is a compile error if there is setter v= in class
 * C but no setter for v= in Sdynamic.
 * @author sgrekhov@unipro.ru
 * @compile-error
 */

import '../../../Utils/expect.dart';

class TestException {}

class A {
  noSuchMethod(Invocation im) {
    Expect.isTrue(im.isSetter);
    Expect.equals(const Symbol("v="), im.memberName);
    Expect.listEquals(const [1], im.positionalArguments);
    Expect.mapEquals(const {}, im.namedArguments);
    throw new TestException();
  }
}

class C extends A {
  var v = 0;
  test() {
    Expect.throws(() {super.v = 1;}, (e) => e is TestException);
  }
}

main() {
  C c = new C();
  c.test();
}