How to test react-router with enzyme

Question

I am using enzyme+mocha+chai to test my react-redux project. Enzyme provides shallow to test component behavior. But I didn\'t find a way to test the router. I am using reac

Answer 1

You can wrap your router inside a component in order to test it.

Routes.jsx

export default props => (
  
    ...
    
    ...
  
)

index.js

import Routes from './Routes.jsx';
...

ReactDOM.render(, document.getElementById('root'));

Then you have to shallow render your Routes component, and you are able to create an object map to check the correspondance between path and related component.

Routes.test.js

import { shallow } from 'enzyme';
import { Route } from 'react-router';
import Routes from './Routes.jsx';
import NurseAuthorization from './NurseAuthorization.jsx';

it('renders correct routes', () => {
  const wrapper = shallow();
  const pathMap = wrapper.find(Route).reduce((pathMap, route) => {
    const routeProps = route.props();
    pathMap[routeProps.path] = routeProps.component;
    return pathMap;
  }, {});
  // { 'nurse/authorization' : NurseAuthorization, ... }

  expect(pathMap['nurse/authorization']).toBe(NurseAuthorization);
});

EDIT

In case you want to additionally handle the case of render props:

const pathMap = wrapper.find(Route).reduce((pathMap, route) => {
  const routeProps = route.props();
  if (routeProps.component) {
    pathMap[routeProps.path] = routeProps.component;
  } else if (routeProps.render) {
    pathMap[routeProps.path] = routeProps.render({}).type;
  }
  return pathMap;
}, {});

It will work only in case you render directly the component you want to test (without extra wrapper).

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