blob: 520bd3007b904fe42b630ec7b9b1f7259abaccfe [file] [log] [blame]
// Copyright (c) 2019, 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 An expression of the form [e is T] or [e is! T] is accepted as a
/// potentially and compile-time constant expression if [e] is potentially
/// constant or compile-time constant, respectively, and [T] is a compile-time
/// constant type.
/// @description Checks that an expression of the form [e is! T] is accepted if
/// [e] is a compile-time constant
/// @author
// Requirements=nnbd-strong
import "../../../Utils/expect.dart";
const i = 0;
const i1 = "12345";
class MyClass1 {
final int res;
const MyClass1() : res = (i is! int ? -1 : i);
class MyClass2 {
final int res;
const MyClass2() : res = (i1 is! int ? -1 : i);
main() {
const bool i_int = i is! int;
const bool i_str = i is! String;
const bool i1_int = i1 is! int;
const bool i1_str = i1 is! String;
const MyClass1 c1 = MyClass1();
Expect.equals(0, c1.res);
const MyClass2 c2 = MyClass2();
Expect.equals(-1, c2.res);