1/* 2 * Copyright (c) 2022-2024 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 desc: 10.06 Interface Method Declarations 18 name: 10.interfaces/10.06.interface_method _declarations/10.06.02_inheritance_and_overriding/interface_overriding_03 19 tags: [negative, compile-only] 20 ---*/ 21 22interface A { 23 foo(): A 24} 25 26interface AA extends A { 27 foo(): string 28} 29 30class B implements AA { 31 private value: string; 32 33 foo(): string { 34 this.value = "foo(): string" 35 return value; 36 } 37 38 getValue(): string { 39 return this.value; 40 } 41} 42 43function main() { 44 let b = new B() 45 b.foo() 46 assert b.getValue() == "foo(): string" 47} 48