blob: aa4f3aabf4ee5a6d72995fce796002716d9a70b0 [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 Null: if T0 is Null then:
/// - if T1 is a type variable (promoted or not) the query is false
/// - If T1 is FutureOr<S> for some S, then the query is true iff Null <: S.
/// - If T1 is Null, S? or S* for some S, then the query is true.
/// - Otherwise, the query is false
/// @description Check that if type T0 is Null and If T1 is Null? then T0 is
/// 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 assigned to the to local variable of type T1
/// @author sgrekhov@unipro.ru
///
/// This test is generated from left_null_A04.dart and
/// local_variable_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';
Null t0Instance = null;
Null? t1Instance = null;
const t1Default = null;
class LocalVariableTest {
LocalVariableTest() {
Null? t1 = forgetType(t0Instance);
t1 = forgetType(t0Instance);
}
static staticTest() {
Null? t1 = forgetType(t0Instance);
t1 = forgetType(t0Instance);
}
test() {
Null? t1 = forgetType(t0Instance);
t1 = forgetType(t0Instance);
}
}
main() {
foo() {
Null? t1 = forgetType(t0Instance);
t1 = forgetType(t0Instance);
}
Null? t1 = forgetType(t0Instance);
t1 = forgetType(t0Instance);
foo();
LocalVariableTest x = new LocalVariableTest();
x.test();
LocalVariableTest.staticTest();
}