1/*
2 * Copyright (c) 2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16class A {}
17class B extends A {}
18
19function main() {
20    let a = new A();
21    let b = new B();
22
23    assert(similarParam(a) == 1);
24    assert(similarParam<B>(b) == 0);
25}
26
27function similarParam(a : A) : int {
28    return 1;
29}
30
31function similarParam(a : A | null) : int {
32    return 2;
33}
34
35function similarParam<T extends A>(t : T | null) : int {
36    return 0;
37}
38