Custom render function for react-testing-library for jest snapshots with jss

test-utils.js

import React from 'react'
import { render } from 'react-testing-library'
import JssProvider from 'react-jss/lib/JssProvider'

const generateClassName = (rule, styleSheet) =>
    `${styleSheet.options.classNamePrefix}-${rule.key}`

const customRender = (node, options) => {
  return render(
    <JssProvider generateClassName={generateClassName}>
        {node}
    </JssProvider>,
    options
  )
}

// re-export everything
export * from 'react-testing-library'

// override render method
export { customRender as render }