1/* 2 * Copyright (c) 2021-2024 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 16/*--- 17desc: 07.32 Lambda Expressions 18name: 07.expressions/7.32.lambda_expressions/callAsyncMethodFromAsyncLambda1 19tags: [] 20---*/ 21 22type asyncLambda = () => Promise<void> 23 24class LambdaTests { 25 async asyncFunc(): Promise<boolean> { 26 return true; 27 } 28 29 testCallAsyncLambda(): void { 30 let call_async_lambda = false; 31 32 let async_lambda: asyncLambda = async (): Promise<void> => { 33 await this.asyncFunc(); 34 call_async_lambda = true; 35 } 36 37 assert(call_async_lambda == false); 38 await async_lambda(); 39 assert(call_async_lambda == true); 40 } 41} 42 43function main(): void { 44 new LambdaTests().testCallAsyncLambda(); 45} 46