HRCenter/src/__tests__/ReduxTests/Reducers/ad/adReducer.test.js

import reducer from "../../../../store/reducers/ad/adReducer";
import expect from "expect";
import { setAd, setAdError } from "../../../../store/actions/ad/adActions";
import { mockState } from "../../../../mockState";

describe("ad reducer", () => {
  it("should return the initial state", () => {
    expect(reducer(undefined, {})).toEqual({
      ad: null,
      errorMessage: "",
    });
  });

  it("should set the state error", () => {
    expect(reducer(undefined, setAdError("Error"))).toEqual({
      ad: null,
      errorMessage: "Error",
    });
  });

  it("should set the state success", () => {
    expect(reducer(undefined, setAd(mockState.ads.ads[0]))).toEqual({
      ad: mockState.ads.ads[0],
      errorMessage: "",
    });
  });
});