1/* 2 * Copyright (c) 2023 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 16import assert = require('assert'); 17 18let str = 'abcdefgbacde'; 19 20assert(str.indexOf('a') === 0, 'success'); 21 22assert(str.lastIndexOf('b') === 7, 'success'); 23 24assert(str.indexOf('a', 3) === 8, 'success'); 25 26assert(str.lastIndexOf('a', 8) === 8, 'success'); 27