LanguageFeatures/nnbd/const_evaluation_A05_t02.dart

// Copyright (c) 2021, 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 CONST_CANONICAL_TYPE(T?) =
 *     let S be CONST_CANONICAL_TYPE(T)
 *     if S is R* then R?
 *     else S?
 *
 * @description Checks that CONST_CANONICAL_TYPE(Object?) = Object?
 *
 * @author iarkh@unipro.ru
 */
// Requirements=nnbd-strong

import "../../Utils/expect.dart";
import "const_evaluation_lib.dart";

dynamic d = null;
Never n = throw "Should not reach here";

const c1 = C<Object?>(null);
const c2 = C<Object?>(11);

void test1() => c1.test(1);
void test2() => c1.test(null);
void test3() => c1.test("It's OK!");
void test4() => c1.test(d);
void test5() => c1.test(n);

main() {
  test1();
  test2();
  test3();
  test4();
  Expect.throws(() => test5());
}