// 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:
/// Interface Compositionality: T0 is an interface type
/// C0<S0, ..., Sk> and T1 is C0<U0, ..., Uk> and each Si <: Ui
/// @description Check that if type T0 is an interface type
/// C0<S0, ..., Sk> and T1 is C0<U0, ..., Uk> and each Si <: Ui then T0 is a
/// subtype of T1
/// @author sgrekhov@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 interface_compositionality_A02.dart and 
/// global_variable_x01.dart.
/// Don't modify it. If you want to change this test, change one of the files 
/// above and then run generator.dart to regenerate the tests.


abstract class U0 {}
abstract class U1 {}
abstract class U2 {}

abstract class S0 extends U0 {}
abstract class S1 extends Object with U1 {}
class S2 = Object with U2;

class C0<X, Y, Z> {
  const C0();
}

C0<S0, S1, S2> t0Instance = new C0<S0, S1, S2>();
C0<U0, U1, U2> t1Instance = new C0<U0, U1, U2>();

const t1Default = const C0<U0, U1, U2>();


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

  foo() {
    t1Instance = t0Instance;
  }

  static test() {
    t1Instance = t0Instance;
  }
}

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

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