1/*
2 * Copyright (c) 2023-2024 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
16function test_n(v: Object | null) { return v ? true : false }
17function test_u(v: Object | undefined) { return v ? true : false }
18function test_nu(v: Object | null | undefined) { return v ? true : false }
19
20function main() {
21    assert(test_n({} as Object));
22    assert(test_u({} as Object));
23    assert(test_nu({} as Object));
24
25    assert(!null);
26    if (null) { assert(false) }
27    assert(!test_n(null));
28    assert(!test_nu(null));
29
30    assert(!undefined);
31    if (undefined) { assert(false) }
32    assert(!test_u(undefined));
33    assert(!test_nu(undefined));
34}
35