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1/**
2 * Copyright (c) 2024-2025 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    i:int;
18    j:string;
19}
20
21function foo(i:Partial<I>){
22    if(i.i == undefined){
23        i.i = 123456789
24    }
25    if(i.j == undefined){
26        i.j = "abcdefghi"
27    }
28}
29
30function main(){
31    let partial1:Partial<I> = {i:1234,j:"abcd"};
32    assertEQ(partial1.i, 1234)
33    assertEQ(partial1.j, "abcd")
34    assertTrue(!(partial1 instanceof I))
35
36    let partial2:Partial<I> = {i:1234};
37    assertEQ(partial2.i, 1234)
38    assertEQ(partial2.j, undefined)
39    assertTrue(!(partial2 instanceof I))
40
41    let partial3:Partial<I> = {};
42    assertEQ(partial3.i, undefined)
43    assertEQ(partial3.j, undefined)
44    assertTrue(!(partial3 instanceof I))
45
46    foo(partial1);
47    assertEQ(partial1.i, 1234)
48    assertEQ(partial1.j, "abcd")
49
50    foo(partial2);
51    assertEQ(partial2.i, 1234)
52    assertEQ(partial2.j, "abcdefghi")
53
54    foo(partial3);
55    assertEQ(partial3.i, 123456789)
56    assertEQ(partial3.j, "abcdefghi")
57}
58