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 16/** 17 * @Import { StringUtil } from '../../shared/libStringUtil.ts' 18 */ 19 20/** 21 * @State 22 * @Tags shared 23 */ 24class A1 { 25 26 /** 27 * @Param 128 28 */ 29 stringSize: number; 30 /** 31 * @Param 100 32 */ 33 loopCount: number; 34 startString: string = ''; 35 concatString: string = 'Ab'; 36 37 /** 38 * @Setup 39 */ 40 setup(): void { 41 let util = new StringUtil(); 42 this.startString = util.randomString(this.stringSize); 43 } 44 45 /** 46 * @Benchmark 47 * @Tags strings, substring 48 */ 49 public test(): string { 50 let result: string = this.startString; 51 for (let i = 0; i < this.loopCount; i++) { 52 result = result.concat(this.concatString); 53 } 54 return result.substring(this.loopCount / 2, this.loopCount); 55 } 56 57} 58