Why is there an error when testing the reducer in the terminal?

Question

JavaScript

Greetings) I study testing.
When testing the reducer, an error occurs in the terminal (Cannot read property 'wait' of undefined) . Why? What's wrong? Help please :)
Action

export const GET_ACTIONS_REQUEST = "GET_ACTIONS_REQUEST";
export const GET_ACTIONS_SUCCESS = "GET_ACTIONS_SUCCESS";

const getActions = () => {
  return dispatch => {
    dispatch({
      type: GET_ACTIONS_REQUEST,
      payload: {
        wait: true
      }
    });
    let act = async () => {
      try {
        let response = await fetch(`data/actions/actions.json`);
        let data = await response.json();
        dispatch({
          type: GET_ACTIONS_SUCCESS,
          payload: {
            wait: false,
            data: data
          }
        });
      } catch (err) {
        console.log(err);
      }
    };
    act();
  };
};

export default getActions;

Reducers

import { GET_ACTIONS_REQUEST } from "../../actions/Actions/getActions";
import { GET_ACTIONS_SUCCESS } from "../../actions/Actions/getActions";

export const initialState = {
  wait: true,
  data: []
};

const getActionsR = (state = initialState, action) => {
  switch (action.type) {
    case GET_ACTIONS_REQUEST:
      return {
        ...state,
        wait: action.payload.wait
      };
    case GET_ACTIONS_SUCCESS:
      return {
        ...state,
        wait: action.payload.wait,
        data: action.payload.data
      };
    default:
      return state;
  }
};

export default getActionsR;

Testing getActionsR

import getActionsR, { initialState } from "./getActionsR";

describe("тесты getActions", () => {
  it("GET_ACTIONS_REQUEST", () => {
    const action = {
      type: "GET_ACTIONS_REQUEST"
    };
    expect(getActionsR(initialState, action)).toEqual({
      ...initialState,
      wait: true
    });
  });
});

Terminal

Thank you :)

Answer 1

You call the reducer with an action

const action = {
      type: "GET_ACTIONS_REQUEST"
    };

In which there is no payload object.