_onSubmit = (event) => {
  event.preventDefault()
  const { username, password } = this.state

  this.props.createUserMutation({
    variables: { username, password }
  }).then(response => {
    this.setState({
      username: '',
      password: ''
    })
  }).catch(error => {
    console.warn(error)
  })
}

it('_onSubmit() should submit form and reset state object', () => {
  const wrapper = shallow(<CreateAccount />)
  wrapper.setState({ username: 'Username', password: 'Password' })
  wrapper.find(Form).simulate('submit', {
    preventDefault: () => {}
  })
  const state = wrapper.instance().state
  expect(state).toEqual({ username: '', password: '' })
})