13af6ab5fSopenharmony_ci/*
23af6ab5fSopenharmony_ci * Copyright (c) 2024 Huawei Device Co., Ltd.
33af6ab5fSopenharmony_ci * Licensed under the Apache License, Version 2.0 (the "License");
43af6ab5fSopenharmony_ci * you may not use this file except in compliance with the License.
53af6ab5fSopenharmony_ci * You may obtain a copy of the License at
63af6ab5fSopenharmony_ci *
73af6ab5fSopenharmony_ci * http://www.apache.org/licenses/LICENSE-2.0
83af6ab5fSopenharmony_ci *
93af6ab5fSopenharmony_ci * Unless required by applicable law or agreed to in writing, software
103af6ab5fSopenharmony_ci * distributed under the License is distributed on an "AS IS" BASIS,
113af6ab5fSopenharmony_ci * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
123af6ab5fSopenharmony_ci * See the License for the specific language governing permissions and
133af6ab5fSopenharmony_ci * limitations under the License.
143af6ab5fSopenharmony_ci */
153af6ab5fSopenharmony_ci 
163af6ab5fSopenharmony_ciclass B {
173af6ab5fSopenharmony_ci    foo(a: int, op?: int): int { return a }
183af6ab5fSopenharmony_ci}
193af6ab5fSopenharmony_ciclass A extends B {
203af6ab5fSopenharmony_ci    override foo(a: int, op?: int): int { return a }
213af6ab5fSopenharmony_ci}
223af6ab5fSopenharmony_ci
233af6ab5fSopenharmony_ciclass C<T> {
243af6ab5fSopenharmony_ci  foo(a: T, op?: T): T { return a }
253af6ab5fSopenharmony_ci}
263af6ab5fSopenharmony_ciclass D<T> extends C<T> {
273af6ab5fSopenharmony_ci  override foo(a: T, op?: T): T { return a }
283af6ab5fSopenharmony_ci}
293af6ab5fSopenharmony_ci
303af6ab5fSopenharmony_cifunction main(){
313af6ab5fSopenharmony_ci    let a = new A();
323af6ab5fSopenharmony_ci    let b = new B();
333af6ab5fSopenharmony_ci    let c = new C<string>();
343af6ab5fSopenharmony_ci    let d = new D<string>();
353af6ab5fSopenharmony_ci 
363af6ab5fSopenharmony_ci    assert(b.foo(5) == a.foo(5));
373af6ab5fSopenharmony_ci    assert(b.foo(6) != a.foo(5));
383af6ab5fSopenharmony_ci    assert(b.foo(5) != a.foo(6));
393af6ab5fSopenharmony_ci    assert(c.foo("x") == d.foo("x"));
403af6ab5fSopenharmony_ci    assert(c.foo("x") != d.foo("y"));
413af6ab5fSopenharmony_ci    assert(c.foo("y") != d.foo("x"));
423af6ab5fSopenharmony_ci}
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