1/* 2 * Copyright (c) 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 16interface I{ 17 foo(a: number, b?: string, f?: () => string) { 18 assertEQ(a, 1) 19 assertEQ(b, b == undefined ? undefined : "1") 20 if(f != undefined) { 21 assertEQ(f(), "Ok") 22 } 23 } 24} 25 26class A implements I{} 27 28function main() { 29 let a: I = new A() 30 a.foo(1) { 31 return "Ok" 32 } 33 a.foo(1, "1") { 34 return "Ok" 35 } 36 a.foo(1, "1") 37}