Jest & Redux - Set test initialState

Question

I want write test with Jest for my app. I want set a mock initial state in test file but i can't find to way.

describe("Polls", () => {

it("should create an poll", () => {
    const data = {
        id: "59284848183",
        name: "Google",
        link: "hhttps://www.google.com.tr",
        point: 0,
        createdDate: new Date().getTime(),
        lastUpdate: new Date().getTime(),
    };
    
    store.dispatch(addPoll(data));
    
    expect(store.getState().polls.polls).toEqual([...initialState, data]);
});

});

I want to check is data added to store