LanguageFeatures/Subtyping/static/generated/right_FutureOr_return_value_A02_t01.dart

// 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 FutureOr<S1> and a type T0 is a
/// subtype of a type 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 used as a return value of type T1
/// @author sgrekhov@unipro.ru
///
/// This test is generated from test_types/right_FutureOr_A02.dart and 
/// test_cases/return_value_x01.dart. Don't modify it! 
/// If you need to change this test, then change one of the files above and then 
/// run generator/generator.dart to regenerate the tests.

import "dart:async";

class S1 {
  const S1();
}
class T0 extends S1 {}

T0 t0Instance = new T0();
FutureOr<S1> t1Instance = new Future.value(new S1());

const t1Default = const S1();

FutureOr<S1> returnValueFunc() => t0Instance;

class ReturnValueTest {
  static FutureOr<S1> staticTestMethod() => t0Instance;

  FutureOr<S1> testMethod() => t0Instance;

  FutureOr<S1> get testGetter => t0Instance;
}

main() {
  FutureOr<S1> returnValueLocalFunc() => t0Instance;

  returnValueFunc();
  returnValueLocalFunc();

  ReturnValueTest.staticTestMethod();

  new ReturnValueTest().testMethod();
  new ReturnValueTest().testGetter;
}