Language/07_Classes/4_Abstract_Instance_Members_A02_t03.dart

/*
 * Copyright (c) 2011, 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 Invoking an abstract method, getter or setter results in an invocation of
 *  noSuchMethod exactly as if the declaration did not exist, unless a suitable member
 *  a is available in a superclass, in which case a is invoked.
 * @description Checks that invoking an abstract method, getter or setter
 * results in invoking noSuchMethod method.
 * @static-warning
 * @author hlodvig
 */
import "../../Utils/expect.dart";

class C { /// static type warning Abstract Instance Members: It is a static warning if an abstract member is declared or inherited in a concrete class.
  int m();
  int get g;
  set g(int v);
  int noSuchMethod(Invocation invocation){
    return 666; 
  }
}

main() {
  C c = new C();
  try {
    var v = c.m();
    Expect.equals(666, v);
  } on NoSuchMethodError catch (e) {
    Expect.fail("NoSuchMethodError is not expected");
  }
  
  try {
  	var v = c.g; /// static type warning not assignable
  	Expect.equals(666, v);
  } on NoSuchMethodError catch (e) {
    Expect.fail("NoSuchMethodError is not expected");
  }
  
  try {
  	c.g = 1; /// static type warning cannot assign to 'METHOD'
    Expect.equals(666, c.g);
  } on NoSuchMethodError catch (e) {
    Expect.fail("NoSuchMethodError is not expected");
  }
}