LanguageFeatures/Subtyping/dynamic/generated/left_FutureOr_return_value_A01_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:
/// Left FutureOr: T0 is FutureOr<S0>
///   and Future<S0> <: T1
///   and S0 <: T1
/// @description Check that if a type T0 is FutureOr<S0> and Future<S0> and S0
/// are subtypes of a type T1, then a type T0 is a subtype of a type T1. Case
/// when an instance of T0 is an instance of S0 type.
/// @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/left_FutureOr_A01.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 '../../utils/common.dart';

import "dart:async";

class C {
  const C();
}
class S0 extends C {}

FutureOr<S0> t0Instance = new S0();
FutureOr<C> t1Instance = new Future<C>.value(new C());

const t1Default = const C();

FutureOr<C> returnValueFunc() => forgetType(t0Instance);

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

  FutureOr<C> testMethod() => forgetType(t0Instance);

  FutureOr<C> get testGetter => forgetType(t0Instance);
}

class ReturnValueGen<X> {
  X testMethod() => forgetType(t0Instance);
  X get testGetter => forgetType(t0Instance);
}

main() {
  FutureOr<C> returnValueLocalFunc() => forgetType(t0Instance);

  returnValueFunc();
  returnValueLocalFunc();

  ReturnValueTest.staticTestMethod();

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

  // Test type parameters

  new ReturnValueGen<FutureOr<C>>().testMethod();
  new ReturnValueGen<FutureOr<C>>().testGetter;
}