import React from 'react'
import assert from 'assert'
import { shallow } from 'enzyme'
import sinon from 'sinon'
import PageContainerHeader from '../page-container-header.component'

describe('Page Container Header', () => {
  let wrapper, style, onBackButtonClick, onClose

  beforeEach(() => {
    style = {test: 'style'}
    onBackButtonClick = sinon.spy()
    onClose = sinon.spy()

    wrapper = shallow(<PageContainerHeader
      showBackButton = {true}
      onBackButtonClick = {onBackButtonClick}
      backButtonStyles = {style}
      title = {'Test Title'}
      subtitle = {'Test Subtitle'}
      tabs = {'Test Tab'}
      onClose = {onClose}
    />)
  })

  describe('Render Header Row', () => {

    it('renders back button', () => {
      assert.equal(wrapper.find('.page-container__back-button').length, 1)
      assert.equal(wrapper.find('.page-container__back-button').text(), 'Back')
    })

    it('ensures style prop', () => {
      assert.equal(wrapper.find('.page-container__back-button').props().style, style)
    })

    it('should call back button when click is simulated', () => {
      wrapper.find('.page-container__back-button').prop('onClick')()
      assert.equal(onBackButtonClick.callCount, 1)
    })
  })

  describe('Render', () => {
    let header, headerRow, pageTitle, pageSubtitle, pageClose, pageTab

    beforeEach(() => {
      header = wrapper.find('.page-container__header--no-padding-bottom')
      headerRow = wrapper.find('.page-container__header-row')
      pageTitle = wrapper.find('.page-container__title')
      pageSubtitle = wrapper.find('.page-container__subtitle')
      pageClose = wrapper.find('.page-container__header-close')
      pageTab = wrapper.find('.page-container__tabs')
    })

    it('renders page container', () => {
      assert.equal(header.length, 1)
      assert.equal(headerRow.length, 1)
      assert.equal(pageTitle.length, 1)
      assert.equal(pageSubtitle.length, 1)
      assert.equal(pageClose.length, 1)
      assert.equal(pageTab.length, 1)
    })

    it('renders title', () => {
      assert.equal(pageTitle.text(), 'Test Title')
    })

    it('renders subtitle', () => {
      assert.equal(pageSubtitle.text(), 'Test Subtitle')
    })

    it('renders tabs', () => {
      assert.equal(pageTab.text(), 'Test Tab')
    })

    it('should call close when click is simulated', () => {
      pageClose.prop('onClick')()
      assert.equal(onClose.callCount, 1)
    })
  })

})