1/* 2 * Copyright (c) 2023-2025 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 16let b : Int = 10; 17 18function foo(): Int { 19 b = 11; 20 return 12; 21} 22 23function main() : void { 24 let a : Int = 1; 25 let c = a ?? foo(); 26 assertEQ(b, 10) 27 assertEQ(c, 1) 28 29 a = null; 30 c = a ?? b; 31 assertEQ(c, 10) 32 33 c = a ?? foo(); 34 assertEQ(b, 11) 35 assertEQ(c, 12) 36 37 let d : Boolean = true; 38 let e : boolean = false; 39 let f = d ?? e; 40 assertEQ(f, true) 41} 42