// 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 not all of Si <: Ui then T0 is
/// not a subtype of T1
/// @author sgrekhov@unipro.ru
///
/// @description Check that if type T0 not a subtype of a type T1, then instance
/// of T0 cannot be be used as a return value of type T1. Return value is tested.
/// @author sgrekhov@unipro.ru
/// @author ngl@unipro.ru
///
/// This test is generated from interface_compositionality_fail_A01.dart and 
/// return_value_fail_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 U1 {}
// no subtype relation between S2 and U2
abstract class S2 {}

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>();


C0<U0, U1, U2> returnValueFunc() => t0Instance;
//                       ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

class ReturnValueTest {
  static C0<U0, U1, U2> staticTestMethod() => t0Instance;
//                                 ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
  C0<U0, U1, U2> testMethod() => t0Instance;
//                    ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

  C0<U0, U1, U2> get testGetter => t0Instance;
//                      ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
}

main() {
  C0<U0, U1, U2> returnValueLocalFunc() => t0Instance;
//                              ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
}