message: use styled-components theme provider in theme tests
diff: @@ -3,7 +3,7 @@ import {promisify} from 'util'
  import renderer from 'react-test-renderer'
  import enzyme from 'enzyme'
  import Adapter from 'enzyme-adapter-react-16'
  -import {ThemeProvider} from 'emotion-theming'
  +import {ThemeProvider} from 'styled-components'
  import {default as defaultTheme} from '../theme'
  const readFile = promisify(require('fs').readFile)
  