blob: 3e29cdadeb05093937810e44c464eecb7d5727be [file] [log] [blame]
/*
* 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 S0 is a subtype of
* T1 but Future<S0> is not a subtype of T1, then a type T0 is not a subtype of
* a type T1. Case when an instance of T0 is an instance of Future<S0> type.
* @author ngl@unipro.ru
*/
/**
* @description Check that if type T0 is not a subtype of a type T1, then
* instance of T0 cannot be be assigned to the to local variable of type T1.
* Assignment to local variable is tested.
* @compile-error
* @author sgrekhov@unipro.ru
* @author ngl@unipro.ru
*/
/*
* This test is generated from left_FutureOr_fail_A03.dart and
* local_variable_fail_x01.dart.
* Don't modify it. If you want to change this file, change one of the files
* above and then run generator.dart to regenerate the tests.
*/
import "dart:async";
class C1 {}
class S0 implements Future<C1> {
asStream() => null;
catchError(Function onError, {bool test(Object error)}) => null;
then<S0>(FutureOr<S0> onValue(C1 value), {Function onError}) => null;
timeout(Duration timeLimit, {FutureOr<C1> onTimeout()}) => null;
whenComplete(FutureOr action()) => null;
}
// Future<S0> is not a subtype of T1 (Future<C1>)
FutureOr<S0> t0Instance = new Future<S0>.value(new S0());
Future<C1> t1Instance = new Future.value(new C1());
class LocalVariableTest {
LocalVariableTest() {
Future<C1> t1 = null;
t1 = t0Instance; //# 03: compile-time error
}
LocalVariableTest.valid() {}
test() {
Future<C1> t1 = null;
t1 = t0Instance; //# 04: compile-time error
}
static staticTest() {
Future<C1> t1 = null;
t1 = t0Instance; //# 05: compile-time error
}
}
main() {
Future<C1> t1 = null;
t1 = t0Instance; //# 01: compile-time error
bar () {
Future<C1> t1 = null;
t1 = t0Instance; //# 02: compile-time error
}
bar(); //# 02: compile-time error
new LocalVariableTest(); //# 03: compile-time error
new LocalVariableTest.valid().test(); //# 04: compile-time error
LocalVariableTest.staticTest(); //# 05: compile-time error
}