Mount not working (RangeError: Invalid string length)

Hi everyone,

maybe I am missing something essential, but I am trying to use mount for some testing and it is just not working. These are my Jest and Enzyme versions:

"enzyme": "^2.9.1",
"jest": "^20.0.4",

I have tried in different types of components and even in the simplest one I came up to, it still not works. This is the component code:

import React, { Component } from 'react'

class Simple extends Component {
  render () {
    return (
      <div>
        <p>This is simple</p>
      </div>
    )
  }
}

export default Simple

And this is the test I wrote for it:

import React from 'react'
import { mount } from 'enzyme'

import Simple from '../../src/js/components/Simple'

test('Simple component renders', () => {
  let wrapper = mount(<Simple />)
  expect(wrapper).toMatchSnapshot()
})

And the output I get is this:

FAIL  __test__/components/Simple.test.js (26.302s)
  ● Simple component renders
    RangeError: Invalid string length
      
      at Object.<anonymous> (__test__/components/Simple.test.js:8:19)
      at Promise.resolve.then.el (node_modules/p-map/index.js:42:16)
      at process._tickCallback (internal/process/next_tick.js:109:7)

I googled this error and the only thing I found is that it might be some out of memory problem, and that is why I tried it with a really simple component, but still it doesn’t work. I have tested this in Ubuntu and Mac OS X, both with the same results.

Thanks in advance for those who can help me with it!