content: import React from 'react';
  import {shallow} from 'enzyme';
  import {assert} from 'chai';
  import Snackbar from 'src/snackbar';
  
  describe('<Snackbar />', () => {
    it('renders hidden by default', () => {
      const wrapper = shallow(
        <Snackbar open={false} message="Message" autoHideDuration={4000} />
      );
  
      assert.equal(
        wrapper.find('div').at(0).node.props.style.visibility,
        'hidden',
        'visibility should be hidden'
      );
    });
  });
  