app/components/StackedChart/__tests__/Bar-test.js
import React from 'react';
import renderer from 'react-test-renderer';
import Bar from '../Bar';
it('renders correctly', () => {
const mockYScale = () => {};
mockYScale.range = () => [];
const tree = renderer
.create(<Bar yScale={mockYScale} colorFn={() => {}} data={[]} transform="test" width={3} />)
.toJSON();
expect(tree).toMatchSnapshot();
});