react-ionicons/docs/node_modules/styled-components/src/test/css.test.js

A React SVG ionicon component

// @flow
import React from 'react'
import { shallow } from 'enzyme'

import { resetStyled, expectCSSMatches } from './utils'

let styled

describe('css features', () => {
  beforeEach(() => {
    styled = resetStyled()
  })

  it('should add vendor prefixes in the right order', () => {
    const Comp = styled.div`
      transition: opacity 0.3s;
    `
    shallow(<Comp />)
    expectCSSMatches('.sc-a {} .b { -webkit-transition:opacity 0.3s; transition:opacity 0.3s; }')
  })

  it('should add vendor prefixes for display', () => {
    const Comp = styled.div`
      display: flex;
      flex-direction: column;
      align-items: center;
    `
    shallow(<Comp />)
    expectCSSMatches(`
      .sc-a {}
      .b {
        display:-webkit-box; display:-webkit-flex; display:-ms-flexbox; display:flex; -webkit-flex-direction:column; -ms-flex-direction:column; flex-direction:column; -webkit-align-items:center; -webkit-box-align:center; -ms-flex-align:center; align-items:center;
      }
    `)
  })

  it('should pass through custom properties', () => {
    const Comp = styled.div`
      --custom-prop: some-val;
    `
    shallow(<Comp />)
    expectCSSMatches('.sc-a {} .b { --custom-prop:some-val; }')
  })
})