Returns empty object on class #35

Hey! I'm having difficulties adding this to my jest tests.

To reproduce:

1. git clone https://github.com/evenstensberg/css-test.git
2. cd react
3. npm install && npm run test

Here's the direct link:

https://github.com/evenstensberg/css-test/tree/master/react

Here's the link to package.json

https://github.com/evenstensberg/css-test/blob/master/react/package.json#L64-L68

Here's the link to the test

https://github.com/evenstensberg/css-test/blob/master/react/src/style-tests/main.test.js