Use Enzyme to test React/Redux container - simulate & find

ShowBox.jsx

  it("should render a text box with no string inside if search string is not provided by store", () => {
    const testState = {
      showBox: {
        search: ""
      }
    };
    const store = createMockStore(testState)
    const component = shallowWithStore(<ConnectedShowBox />, store);
    expect(component).to.be.a('object');
    
    
    expect(component.dive().find("").prop("value")).to.equal("")
    
    
    component.dive().find("").simulate("change", { target: { value: "Site" } });
    expect(component.dive().find("d").prop("value")).to.equal("Site")
  });