LanguageFeatures/Subtyping/static/generated/left_promoted_variable_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:
/// Left Promoted Variable: T0 is a promoted type variable X0 & S0
/// and S0 <: T1
/// @description Check that if type T0 is a promoted type variable X0 & S0 and S0
/// is subtype of T1 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 used as a return value of type T1
/// @author sgrekhov@unipro.ru
///
/// This test is generated from test_types/left_promoted_variable_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.

class T1 {
  const T1();
}
class X0 {}
class S0 extends X0 implements T1 {}

S0 t0Instance = new S0();
T1 t1Instance = new T1();

const t1Default = const T1();

T1 returnValueFunc() => t0Instance;

class ReturnValueTest {
  static T1 staticTestMethod() => t0Instance;

  T1 testMethod() => t0Instance;

  T1 get testGetter => t0Instance;
}

test<T>(T t0Instance) {
  if (t0Instance is S0) {
    T1 returnValueLocalFunc() => t0Instance;

    returnValueFunc();
    returnValueLocalFunc();

    ReturnValueTest.staticTestMethod();

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

main() {
  test<S0>(t0Instance);
}