在集成测试期间，对象中的ArrayLIst未更新

import java.util.concurrent.CopyOnWriteArrayList;

public class Example {
    private CopyOnWriteArrayList<String> list = new CopyOnWriteArrayList<>();

    public void addItem(String item) {
        list.add(item);
    }

    public List<String> getList() {
        return list;
    }
}

public class Example {
    private ArrayList<String> list = new ArrayList<>();

    public void updateList(ArrayList<String> newList) {
        this.list = newList; // 确保这里是引用传递
    }

    public List<String> getList() {
        return list;
    }
}

@BeforeEach
public void setUp() {
    example = new Example();
    example.getList().clear(); // 清空列表
}

public void addItem(String item) {
    if (item != null) {
        list.add(item); // 确保添加操作正确执行
    }
}