Icon.test.js

// Icon.test.js
import React from 'react'
import { shallow } from 'enzyme'

import Icon from './Icon'

describe('Icon', () => {
  let tree, props

  const buildTree = (newProps = {}) => {
    const defaultProps = {
      name: 'add',
    }

    props = Object.assign({}, defaultProps, newProps)

    return shallow(<Icon {...props} />)
  }


  it('matches the snapshot', () => {
    tree = buildTree()
    expect(
      tree
    ).toMatchSnapshot()
  })
  
  it('adds the proper className given an icon name', () => {
    tree = buildTree({ name: 'delete' })
    
    expect(
      tree.hasClass('icon-delete')
    ).toBe(
      true
    )
  })
})