before each for integration tests

integrationTests.js

describe('integration tests', () => {
  let store;
  let dispatchSpy;
  let router;

  beforeEach(() => {
    router = {
      params: { myParam: 'any-params-you-have' },
    };
    ({ store, dispatchSpy } = setupIntegrationTest({ myReducer }, router));
  });