LanguageFeatures/Subtyping/dynamic/generated/right_object_fail_local_variable_fail_A07_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 Object: if T1 is Object then:
///  - if T0 is an unpromoted type variable with bound B then T0 <: T1 iff
///      B <: Object
///  - if T0 is a promoted type variable X & S then T0 <: T1 iff S <: Object
///  - if T0 is FutureOr<S> for some S, then T0 <: T1 iff S <: Object.
///  - if T0 is S* for any S, then T0 <: T1 iff S <: T1
///  - if T0 is Null, dynamic, void, or S? for any S, then the subtyping does not
///      hold (per above, the result of the subtyping query is false).
///  - Otherwise T0 <: T1 is true.
/// @description Check that if T0 is FutureOr<S> for some S but S is not subtype
/// of Object then T0 is not subtype of T1
/// @author sgrekhov@unipro.ru
///
/// @description Check that if type T0 is not a subtype of a type T1, then
/// instance of T0 cannot be assigned to the to local variable of type T1
/// @author sgrekhov@unipro.ru
///
/// This test is generated from right_object_fail_A07.dart and 
/// local_variable_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.


import '../../utils/common.dart';
import '../../../../Utils/expect.dart';

// Requirements=nnbd-strong
import "dart:async";

class S {}

FutureOr<S?> t0Instance = null;
Object t1Instance = new Object();

const t1Default = const Object();




class LocalVariableTest {

  LocalVariableTest() {
    Object t1 = forgetType(t0Instance);
  }

  LocalVariableTest.valid() {}

  static staticTest() {
    Object t1 = forgetType(t0Instance);
  }

  test() {
    Object t1 = forgetType(t0Instance);
  }
}

main() {
  bar () {
    Object t1 = forgetType(t0Instance);
  }

  Expect.throws(() {
    Object t1 = forgetType(t0Instance);
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    bar();
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    new LocalVariableTest();
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    new LocalVariableTest.valid().test();
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    LocalVariableTest.staticTest();
  }, (e) => e is TypeError || e is CastError);
}