// Copyright (c) 2018, 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 We say that a type T0 is a subtype of a type T1 (written T0 <: T1)
 * when:
 * Right FutureOr: T1 is FutureOr<S1> and
 *   either T0 <: Future<S1>
 *   or T0 <: S1
 *   or T0 is X0 and X0 has bound S0 and S0 <: T1
 *   or T0 is X0 & S0 and S0 <: T1
 * @description Check that if a type T1 is S1 and a type T0 is X0 and X0 has
 * bound S0 and S0 <: S1, then a type T0 is a subtype of a type T1.
 * @author ngl@unipro.ru
 */
/**
 * @description Check that if type T0 is a subtype of a type T1, then instance
 * of T0 can be be assigned to the to global variable of type T1
 * @author sgrekhov@unipro.ru
 */
/*
 * This test is generated from right_FutureOr_A04.dart and 
 * global_variable_x01.dart.
 * Don't modify it. If you want to change this file, change one of the files 
 * above and then run generator.dart to regenerate the tests.
 */


import '../../utils/common.dart';
import "dart:async";

class S1 {
  const S1();
}
class S0 extends S1 {
}
class X0 extends S0 {
}

X0 t0Instance = new X0();
FutureOr<S1> t1Instance = new S1();

const t1Default = const S1();


class GlobalVariableTest {
  GlobalVariableTest() {
    t1Instance = forgetType(t0Instance);
  }

  foo() {
    t1Instance = forgetType(t0Instance);
  }

  static test() {
    t1Instance = forgetType(t0Instance);
  }
}

main() {
  bar () {
    t1Instance = forgetType(t0Instance);
  }

  t1Instance = forgetType(t0Instance);
  bar();
  GlobalVariableTest t = new GlobalVariableTest();
  t.foo();
  GlobalVariableTest.test();
}