xref: /arkcompiler/ets_frontend/ets2panda/test/runtime/ets/SmartCast_11.sts

/*
 * Copyright (c) 2024 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

class C {}

function foo(arg?: boolean): C | undefined {
    if (arg == undefined) {
        return undefined;
    }
    return arg == false ? undefined : new C();
}

function bar(arg?: boolean): C | undefined {
    if (arg == true) return new C();
    return arg == false ? undefined : new C();
}

function baz(arg?: boolean): int {
    if (arg == undefined) return 0;
    assert (typeof arg == "boolean");
    return 1;
}

function main() {
    assert(foo(true) instanceof C);
    assert(foo(false) == undefined);
    assert(foo() == undefined);

    assert(bar(true) instanceof C);
    assert(bar(false) == undefined);
    assert(bar() instanceof C);

    assert(baz(true) == 1);
    assert(baz(false) == 1);
    assert(baz() == 0);
}