message: update DonutChart tests
diff: @@ -2,7 +2,7 @@ import React from 'react'
  import DonutChart from '../DonutChart'
  import DonutSlice from '../DonutSlice'
  import {colors} from '../theme'
  -import {render} from '../utils/testing'
  +import {render, rendersClass} from '../utils/testing'
  describe('DonutChart', () => {
  it('renders the data prop', () => {
  @@ -45,4 +45,12 @@ describe('DonutChart', () => {
  )
  expect(donut.type).toEqual('svg')
  })
  +
  + it('respects margin utility prop', () => {
  + expect(rendersClass(<DonutChart m={4}><DonutSlice state="failure" value={1} /></DonutChart>, 'm-4')).toEqual(true)
  + })
  +
  + it('respects padding utility prop', () => {
  + expect(rendersClass(<DonutChart p={4}><DonutSlice state="failure" value={1} /></DonutChart>, 'p-4')).toEqual(true)
  + })
  })
  